MXPA99005917A - Antenna system for dual mode satellite/cellular portable phone - Google Patents

Abstract

An antenna operable in two disparate frequency bands is disclosed as including a first quadrifilar helix having four conductive elements arranged helically to define a cylinder of substantially constant radius, where the first quadrifilar helix is formed of two bifilar helices arranged orthogonally and excited in phase quadrature. A quadrature feed network is connected to the first quadrifilar helix, wherein one end of a coupling element thereof is connected to a first end of each conductive element. The quadrature feed network also includes a first feedpoint for operation of the antenna with circular polarization in a first frequency band and a second feedpoint for operation of the antenna with linear polarization in a second frequency band. The antenna may include a second quadrifilar helix connected to the quadrature feed network and having four conductive elememts arranged helically to define a cylinder of substantially constant radius, where the second quadrifilar helix is formed by two bifilar helices arranged orthogonally and excited in phase quadrature. The second quadrifilar helix is wound in opposite sense with respect to the first quadrifilar helix so as to be conductively coupled therewith.

Description

PAIN SYSTEM ANTENNA LAPTOP SATELLITE / CELLULAR TELEPHONE DOUBLE BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is generally related to a dual-mode cellular / satellite handset and, in particular, to an antenna system for a dual-mode cellular-satellite handset. , 2. Description of the Related Art Portable cell phones are well known and have been used for the past several years, These cell phones typically transmit and receive signals at a frequency of approximately 800-S50 Megahertz by means of an antenna designed for dic-ho purpose. Recently, however, a second mode of communication (eg, satellite) has been desirable for use in areas where cell towers or stations are not available. Satellite communication occurs at much more frequencies. higher than for cellular communication (typically, 1.0-3.0-Gigahertz) and also requires an antenna specifically designed for such communication. It will be understood that -certain differences are found between an antenna used for cellular communication versus one used for satellite communication. An example is that the cellular antenna will preferably be linearly polarized so as to function as a monopod while the satellite antenna is polarized circularly in order to provide semi-spherical coverage. An additional distinction is that communication in the satellite mode involves a directional component (where the link margin increases when the satellite antenna is aimed at the satellite), while communication in the cellular mode is not. . Because at least some of the desirable characteristics for cellular and satellite antennas are inconsistent, an approach that has been taken is the antenna system shown and described in a patent application entitled "Antenna System for Portable Satellite Phone". / Dual Mode Cell ", No, Series 0S / 58S., 433. Also filed by the assignee of the present invention. As seen in it, separate antennas were provided with a portable telephone for cellular and satellite communication. While the antenna system described by this patent application is suitable for its intended purpose, it will be appreciated that an antenna system having only a single antenna that can be used for both cellular and satellite communication modes will be preferred from the view of cost and aesthetics. In light of the above, a primary objective of the present invention is to provide an antenna system for a portable telephone that allows the transmission and reception of signals in both cellular and satellite communication modes. Another object of the present invention is to provide an antenna system for a dual-mode satellite / cellular telephone that includes only a single antenna for transmitting and receiving signals in cellular and satellite communication modes. A further object of the present invention is to provide an antenna system for a dual satellite / cellular mode portable telephone that is mounted in order to allow better link margin with respect to an applicable satellite. Still another object of the present invention is to provide an antenna system for a dual cellular / cellular mode portable telephone that minimizes the need for manipulation by the user thereof - Still another object of the present invention is to provide a system of antenna for a dual-mode satellite / cellular phone that is aesthetically pleasing to the user thereof, Another object of the present invention is to provide an antenna system for a dual-mode satellite / cellular telephone that minimizes the total impact on the size of the portable telephone, A still further object of the present invention is to provide an antenna system for a dual-mode satellite / cellular telephone that allows the use of separate frequency sub-bands to transmit and receive signals within the modes of communication by satellite and cellular, These objects and other particularidade of the present invention will become more readily apparent after reference to the following description when taken in conjunction with the following drawing, SUMMARY OF THE INVENTION In accordance with one aspect of the present invention, an antenna operable in two fired frequency bands is described as including a first quadrilateral helix having four conducting elements helically arranged to define a substantially constant radius cylinder, wherein The first co-dilar helix is formed by two bifilar helices arranged orthogonally and excited in quadrature phase. A quadrature feed network is connected to the first quadrifilar helix, where one end of an element, coupling thereof, is connected to a first end of each conductive element. The quadrature feed network also includes a first feed point for operation of the antenna with circular polarization in a first frequency band and a second feed point for operation of the antenna with linear polarization in a second frequency band, the antenna it may include a second quadrifilar helix connected to the quadrature feed network and having four conductor elements helically arranged to define a cylinder of substantially constant radius, wherein the second quadrifilar helix is formed by two bifilar propellers arranged orthogonally and excited in quadrature. The second quadrilateral helix is wound in the opposite direction with respect to the first quadrifilar helix so as to be electromagnetically uncoupled from it. In accordance with a second aspect of the present invention, an antenna for transmitting and receiving signals within a first frequency band and a second frequency band is described co or including a flexible sheet of film having a first side and a second side , a first metallized pattern formed on the first side of the film sheet having a plurality of spiral arms connected to a coupler, and a second metallized pattern formed on the second side of the film sheet having a plurality of connected spiral arms to a coupler, the film sheet is formed towards a cylindrical tube having a longitudinal axis therethrough so that a first coaxial quadrifilar helix is constructed by the spiral arms of the first metallized pattern and a second coaxial quadrilateral helix is constructed by the spiral arms of the second metallized pattern, with the first and second quadrifilar helices this The winding in an opposite direction to prevent electromagnetic coupling between them, According to a third aspect of the present invention, a portable telephone having a PP circuit contained within the main housing μn to operate the portable telephone in both cellular and mobile modes. Satellite is described. More specifically, an antenna assembly for said portable telephone is described as including a base member connected to the main housing of the portable telephone and a member _? -. dome connected to the base member, wherein the dome member contains therein a printed antenna that is capable of transmitting and receiving signals in the cellular and satellite operation modes. The antenna assembly may also include a pivoting joint member within the base member, wherein the dome member is connected at one end of said articulation member so as to be rotatable about an axis between a first position adjacent to a joint. lateral surface of the main housing and a second position. Additionally, an elbow member is preferably connected to an articulation member at a first end and the dome member at a second end so that the articulation and dome members are substantially perpendicular in orientation In accordance with a fourth aspect of the present invention, a quadrilateral propeller antenna is described as including a flexible sheet of dielectric film with first and second pairs of conductor arms printed on the flexible sheet of dielectric film such that the conductor arms form a quadrifilar helix when the flexible sheet It is rolled towards a cylindrical tube. A balanced 30a branching line coupler is also printed on the flexible sheet of dielectric film, wherein the coupler is capable of providing two output signals balanced in quadrature of one phase relative to the other. The coupler includes a first output port connected to the first pair of driver arms having a first terminal to provide a portion in phase of a first output signal to one of the first pair of conductor arms and a second terminal to provide an anti-phase portion of the first output signal to the other of the first pair of conductor arms. The coupler also includes a second output port connected to the second pair of conductor arms wherein the second output port has a first terminal for providing a phase portion of a second output signal to one of the second pair of conductor arms and a second one. terminal to provide an anti-phase portion of the second output signal to the other of the second pair of conductor arms, The coupler has at least one input port to receive an input signal and divide the input signal between the first and second pairs of conducting arms in relative phase progression so as to be radiated with circular wave polarization, BRIEF DESCRIPTION OF THE DRAWING Even though the specification concludes with claims that particularly note and distinctly claim the present invention, it is believed that it will be better understood from the following description taken in conjunction with the accompanying drawing, in which: Figure 1 is a perspective view of a portable telephone operable in both satellite and cellular communication modes including the antenna assembly of the present invention, wherein the dome member of the antenna assembly is in a first position; Figure 2 is a perspective view of the portable telephone illustrated in Figure 1, wherein the dome member of the antenna assembly is in a second position; Figure 3 is a perspective, detailed view of the antenna assembly with the portable telephone illustrated in Figures 1? 2; Figure 4 is a bottom perspective view of the base member for the antenna assembly illustrated in Figures 1-3; Figure 5 is a planar front view of a first embodiment of the printed antenna placed within the dome member of the antenna assembly illustrated in Figures 1-3; Figure 6 is a planar rear view of the printed antenna illustrated in Figure 5; Figure 7 is a front view of the printed antenna illustrated in Figures 5 and S after being formed into a cylindrical tube configuration, wherein the electrical elements associated with the various feed points of the antenna are schematically illustrated; Figure 8 is a planar front view of a second embodiment for the printed antenna placed within the dome member of the antenna assembly illustrated in Figures 1-3, wherein the electrical elements associated with the various antenna feeding points. are schematically illustrated, Figure 9 is a planar rear view of the printed antenna illustrated in Figure d, wherein the electrical elements associated with the various antenna feeding points are also schematically illustrated: and Figure 10 is a view front of the printed antenna illustrated in Figures 8 and 9 after being formed into a cylindrical tube configuration.

DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawing in detail, in which identical numbers indicate the same elements through the figures, Figure 1 illustrates a portable telephone 19 which is operable in dual modes of satellite and cellular communication, You will see that the portable telephone 10 has a main housing 12 and preferably an antenna assembly 14 in accordance with the present invention that transmits and receives signals within certain specific frequency bands of operation. A keyboard 16, display 18 and speaker 20 are provided along a front surface 22 of the main housing 12 to allow a user to operate the portable telephone 10 in the normal form. Of course, it will be understood that the main housing 12 It has an RF circuit placed in it that allows the portable phone to communicate in both cellular and satellite communication modes. Although not shown, the e-stamped RF circuit is shown and described in the patent application entitled "Dual Satellite / Cellular Terminal", Serial No. 08 / 501,575, which is owned by the assignee of the present invention. and is incorporated herein by reference. With respect to the antenna assembly 14, it will be seen from Figures 1 and 2 that it is preferably placed adjacent to a top surface 24 (see Figure 3) and a side surface 26 of the main housing 12 and therefore has a substantially L-shaped configuration (although it could be placed so easily along the other side of the main housing 12), the antenna assembly 14 is preferably detachably secured to the main housing 12 and includes a base member 28 connecting the set 14 of antenna to the main 12 housing, a dome member 30 containing an antenna 32 printed therein (which will be discussed in greater detail below), a hinge member 34 that allows the dome member 30 to rotate about an axis 36 between a first position adjacent to the lateral surface 26 (shown in Figure 1) to a second position substantially 180s from the first position (shown in Figure 2), and an elbow member 38 connecting the dome member 30 to the hinge member 34 and pivoting about of the shaft 36 in conjunction with the dome member 30. It will be understood that the dome member 30 remains in the first position when not in use or in a standby mode to minimize the overall size of the portable telephone. as the antenna assembly 14 will slightly increase the overall height and width of the portable telephone 10 of that of the main housing 12. In this first position, the impact on the ease of fastening and transport of the portable phone 10 é & For the rest, the dome member 30 and the elbow member 38 of the antenna assembly 14 are rotated to the second position when used to transmit or receive signals. As indicated above, the set Antenna 14 is preferably removably mounted to the main housing 12 by means of the base member 28. Accordingly, the base member 28 can be constructed similarly to a support bracket assembly used to detachably mount a pressure cover to the main housing of a portable telephone shown and described in a patent application entitled "Pressure Cover Assembly". Separable for a portable telephone ". Serial No. 08 / 586,434. which is in possession by the assignee of the present invention and is incorporated herein by reference. In this manner, as shown in Figures 3 and 4, the base member 28 preferably includes a first grooved orifice 40 that is dimensioned to receive the upper surface 24 and a portion of the main housing 12. A latch mechanism, preferably in the form of a retainer 42 that is positioned to be received in a recess (not shown) on a rear surface of the main housing 12, is proportional to engage the base member 28 to the main housing 12 In order to facilitate the mounting of the base member 28 to the main housing 12, the first slotted portion 40 of the base member 28 preferably has at least one guide pin 44 positioned therein which is received within a corresponding opening 46 therein. 12 main housing, as well as a dovetailed type guide positioned on at least one of the main housing side surfaces 26 and 50. Each dovetail type guide includes a male member 52 positioned within the first slotted portion 40 of the base member 28 and a complementary female member 54 associated with the main housing 12, LQS connectors 56, 58 and 60 are positioned within the first slotted portion 40 of the base member 28 and connected to one end of the coaxial cables 62, 64 and 66, respectively, with the other end of the coaxial cables 62. 64 and 66 being connected to the printed antenna 32. Complementing this arrangement, connectors 68, 70 and 72 are coupled to the amp circuit; and extend from the upper surface 24 of the main housing 12 so as to align with and match the connectors 56. 58 and 60 when the base member 28 is mounted to the main housing 12. In this way, the RF circuit of the portable telephone 10 is appropriately connected to the printed antenna 32 of the antenna assembly 14. The base member 28 further includes a second slotted portion 74 opposite the first slotted portion 40. wherein the articulation member 34 of antenna assembly 14 is rotatably mounted thereto. In this way, the portable telephone 10 allows flexibility in the placement of the printed antenna 32 by a user thereof, whereby the signal resistance is maximized (when in the communication satellite mode) pointing to antenna 32 printed to an applicable satellite. More specifically, the hinge member 34 includes a rotary joint arrow 76 which is understood through a pair of rotary joint bearings 78 and 80 placed within the slotted grooves 79 and 81, respectively, immediately inside the walls 82. and 84 of end of base member 28. It will be noted that the rotating joint arrow 76, as well as the rotary joint bearings 78 and 80, preferably have a D-shaped cross-section in order to prevent the dome member 30 of the antenna assembly 14 from overcurling about the axis 36 (the preferred scale of rotation being approximately 180th in one direction or the other). The end of the rotatable joint arrow 76 is preferably retained to the elbow member 38 of the antenna assembly 14 while the other end preferably has an oscillating cap attached thereto (not shown), Co or seen in Figure 3. , an optional removable cover 88 is secured to the base member 28 in order to protect the articulation member 34 from dust and other contaminants. The elbow member 38 of the antenna assembly 14 has the rotary joint arrow 76 connected thereto at a first end 90 and a dome member 30 connected at a second end 92 (which generally will be substantially oriented 90a with respect to the first end 90). ) As seen in Figure 3, the elbow portion 38 is hollow and includes a side aperture 94 therein that is covered by a removable access cap 96. Preferably, the access cap 96 is frictionally retained to the elbow member 38, such as by a configuration male-female (a plurality of female portions 97 is seen in Figure 3). Also, the dome member 30 can be secured to the second end 92 of the elbow member 38 by means of a friction fit, In this regard, Figure 3 illustrates the dome member 30 as being substantially a cylindrical tube having a radius R - internally slightly greater than an outer radius -z of the second cylindrical end 92 of the elbow member 38, wherein the dome member 30 is capable of sliding over said second cylindrical end 92 until it sits against a shoulder 8, It will be understood that the hollow nature of both the rotary joint arrow 76 or the elbow member 38 allows the coaxial cables 62, 64 and 77 to be connected to the antenna 32 printed on the dome member 30 at one end and to the connectors 56. , 58 and 60 on the other end by means of openings (not shown) on the rotary joint arrow 76. In particular, the signals transmitted to a satellite applicable through the printed antenna 32 are sent from the RF circuit in the main housing 12 through the coaxial cable 62, the signals received by the antenna 32 printed from an applicable satellite are sent to the RF circuit in the main housing 12 through the coaxial cable 64, and the coaxial cable 66 is used both to transmit signals and to receive signals from the printed antenna 32 when the portable telephone 10 is in cellular communication mode (onopolo) , In order to maintain the coaxial cables 62, 64 and 66 in the proper configuration, as well as to produce a minimum bend radius, prevent cable burn-in and reduce fatigue failures of the covering material under bending conditions, and prefer that the outer jackets of the same are formed to heat as described in a patent application entitled "-Coaxial Cable Set for a Portable Telephone il ", Serial No. 08 / 613,700, which is also the property of the assignee of the present invention and is hereby incorporated by reference, With respect to the dome member 30 of the antenna assembly 14, it has been observed that a preferably printed antenna 32 is placed in the same A-nn when the printed antenna 32 is laminated to a cylindrical tube to be in the desired shape for the dome member 30 (as seen in Figure 7), it will be better understood Referring to the flat top and rear views of the same in Figures 5 and 6, or Co therein, the antenna 32 printed preferably is constructed of a sheet 100 of flexible film made of a dielectric material (v. .gr .. mylar, fiberglass, kevíar and the like). The film sheet 100 has a front surface 102 with a metallized layer 104 applied thereto in a desired pattern (see Figure 5) and a back surface 106 with a second metal-patterned pattern 108 applied thereto of a predetermined design ( see Figure 6), More particularly, the front metallized layer I04 has a pair of arms 1-05 and 107 spirals and the posterior metallized layer 108 has a pair of arms 109 and 111 spiers that are configured so that the printed antenna 32 have a quadrifilar helix design when the film sheet 100 is wound into a cylindrical tube, as best seen in Figure 7. It will be understood that the front and rear metallized layers 104 and 108 are preferably printed on the film sheet 100, with the dimensions of them being photographically reproduced. The spiral arms 105, 107, 109 and 111, on the other hand, will typically have a substantially equivalent length either at a quarter of a wavelength or three quarters of the wavelength of the desired operating frequencies.It will be further understood that the cylindrical tube toward which the sheet 100 of film preferably rolls has a controlled diameter D (see Figure 7). One approach to performing this task is to wrap the sheet 100 of film around a mandrel and Adhere the overlapping portions that extend over 360s. The mandrel would then be removed once the glue has dried, thus forming the sheet 100 of film, it will be seen that only a quadrifilar helix 101 is formed by the arms 105, 107, 1Q9 and 111 spiers since they are wound on the same sense. A balanced 90a branch line coupler 110, made by patterns printed on the front and rear metallized layers 104 and 108, is preferably used to provide the four phase drive signals to the arms 105, 10 ?, 109 and 111 spirals of the printed antenna 32 It will be understood that the coupler 110 is an adaptation of an unbalanced branch line coupler described in the UA Patent to Riblet. F place of the form dßsbalanc-eada in Riblet. wherein a branching line coupler pattern is printed in a side of a dielectric layer with a ground plane on the other side thereof, the coupler 110 of the present invention includes two identical coupler patterns placed back to back on the front and rear surfaces 102 and 106 of the dielectric film sheet 100. The coupler 110 of this way has a balanced construction in which square conductors 112 (front metallized layer 104) and 114 (posterior metallized layer 108) are separated by sheet 100 of dielectric film. Of course, the coupler 110 provides the connection between the printed antenna 32 and the coaxial cables 62, 64 and 66 so that the printed antenna 32 is connected to the RF circuit in a portable telephone. It will be noted from Figures 5 and 6 that the spiral arms 105 and 11 are connected to a first coupler outlet 110 made of upper legs 113 and 119 extending from the square conductors 112 and 114, respectively. Also, the spiral arms 107 and 109 are connected to a second output of the coupler 110 formed by the upper legs 115 and 117 extending from the square conductors 112 and 113, respectively. In this way, the upper legs 113 and 115 will carry the portion in phase and the legs H? and higher will carry the in-phase portion of the output signal from the coupler 110. It will be seen in addition to Figure 7 that the coupler 110 has a first input port 116 that includes lower legs 118 and 120 of square conductors 112 and 113 , respectively, whose printed antenna 32 uses to transmit the frequency fi and receive the frequency f2 while in the mode of satellite communication (the coupler 110 being balanced and the helix 101 quadratic having circular polarization) and a second port 122 inlet which includes legs 124 and 126 inferiors of leads 112 and 113 squares, respectively, that the printed antenna 32 uses for the frequency f3 (both transmitting and receiving) while in the cellular communication or onopolo mode (the coupler 110 being unbalanced and the propeller 101 quadrilateral having linear polarization). More specifically, it will be seen in Figure 7 that a false load 128 is provided through the lower legs 124 and 126 of the second input port 122 in order to terminate the balanced mode of the coupler 110 in the second input port 122. In this way, only the satellite frequencies f and f2 are able to be used during the balanced mode of the coupler 110 since its feed point 129 is fixed to the first input port 116. A short circuit 240 is provided between the front and rear metallized layers 104 and 108 in order to place the coupler 110 in an unbalanced mode, with the power point 131 being used for the cellular frequency. The short circuit 130 is preferably placed about a quarter wavelength away from the false load 128 so that it appears as an open circuit. A second mode of the printed antenna, designated by the number 132, is illustrated in Figures 8-10, As explained above with respect to the printed antenna 32, a sheet is provided 134 of flexible film in which a first metallized layer 136 is applied to a front surface 138 thereof and a second metallized layer 140 is applied to a rear surface 142. A first pair of arms 143 and 144 spirals are in substantially parallel relationship as they extend from the upper legs 156 and 158. After traveling a distance d, the spiral arm 143 has a spiral arm 145 branched therefrom substantially perpendicular to it. same and the spiral arm 144 also has a branched spiral arm 146 substantially perpendicular thereto. It will be seen from Figures 8 and 9 that the spiral arm 143 continues along the front surface 138 of the film sheet 134 while the spiral arm 144 enters a plated track 166 and subsequently extends in the same direction along the back surface 142 of the film sheet 134. A second set of arms 149 and 150 spirals is provided by the metallized layer 140 and connected to the upper legs 160 and 162 of the coupler 165. The spiral arms 149 and 150 are oriented substantially parallel to each other as they extend from the legs. 160 and 162 above, D after crossing a distance d2. the spiral arm 149 has a branched spiral arm 151 substantially perpendicular thereto. It will be seen that the spiral arm 149 enters a track 167 plated so that the spiral arm 151 travels along the front surface 138 of the film sheet 134 until it passes the spiral arm 150, after which the arm 151 spiral between another path 168 plated and extends along the rear surface 142 of the film sheet 134 It will also be seen that a spiral arm 152 branches substantially perpendicular to the arm 150 sucks! . Accordingly, the spiral arms 150 and 152 extend along the rear surface 142 of the film sheet 134 for a specified length. It will be understood that when the film sheet 134 is wrapped into a cylindrical tube configuration, a The first quadrifilar helix 148 is formed by the arms 143. 144, 145 and 146 spirals of the frontal metallized layer 136 and a second quadrifilar helix 154 are formed by the arms 149. 15.0. 151 and 152 aspirations, It will be noted that none of the spiral arms for each quadrifilar helix is touched where they intersect, which is why the plated tracks 166, 167 and 168 are provided strategically. This prevents the electromagnetic coupling between the first and second helices 148 and 154 quadrifilar. It will also be understood that both the first quadrifilar helix 148 and the second quadrifilar helix 154 are coaxial with a longitudinal axis 31 through the printed antenna 132, with the first quadrifilar helix 148 being concentrically positioned outside the second quadrifilar helix 154. Since the printed antenna 132 has a three-mode configuration, a power point 171 for a first satellite frequency band (having a circular polarization in a given direction) is connected to a first input port 170 of the coupler 165 and a power point 173 for a second satellite frequency band (having a circular polarization opposite that of the first satellite frequency band) is connected to a second input port 172 of the coupler 165. In this way, the bands Frequency channels for transmitting and receiving signals can be used with the antenna 132 printed. It will be understood that the first quadrifilar helix 148 is preferably adapted to the lower frequency bands and that the second quadrifilar helix 154 is adapted to the upper one of the frequency bands (since the spiral arms 143, 144, 145 and 146) they are longer than arms 149, 150, 151 and 152 spirals). Of course, the coupler 165 is in a balanced mode when either the first frequency band or the second frequency band is provided to the printed antenna 132 in order to provide circular polarization. By contrast, a third frequency band used to transmit and receive cellular signals is provided to the printed antenna 132 when the coupler 154 is in the balanced mode, wherein one of the first quadrifilar helix 148 and second quadriplegic helix 154 is linearly polarized as an onopolo and another acts as a parasitic element, consequently. The third frequency band may use either the first input gate 170 or the second input gate 172, such as its feed point 175 (even though this is shown as being connected to a second input gate 172 in FIGS. 8 and 9). Having shown and described the preferred embodiment of the present invention, further adaptations of the antenna assembly described herein can be achieved by appropriate modifications by one of ordinary skill in the art without departing from the scope of the invention.

Claims (1)

1. CLAIMS 1. - An antenna operable in two triggered frequency bands, comprising: (a) a first quadrifilar helix including four conductive elements arranged helically to define a cylinder of substantially constant radius, the first quadrifilar helix being formed of two orthogonally arranged bifilar helices and excited in phase quadrature; and (b) a quadrature feed network connected to the first quadrifilar helix, wherein one end of a coupling member thereof is connected to a first end of each conductor element, the quadrature feed network further comprising: ( i) a first power point for operation of the antenna with circular polarization in a first frequency band. ' and (2) a second power point for operation of the antenna with linear polarization in a second frequency band, 2-- The antenna of claim 1, wherein the first frequency band is within an operating mode of satelite. 3. The antenna of claim 1. wherein the second frequency band is within a cellular operation mode. 4. - The antenna of claim 1, the antenna further comprising a sheet of dielectric material, wherein the conductive elements and the coupling element are printed thereon. 5. The antenna of claim 4, wherein a first pair of the conductive elements are printed on a first surface of the dielectric sheet and a second pair of the conductive elements are printed on a second surface of the dielectric sheet, 6, - The antenna of claim 1, further comprising a second quadrifilar helix connected to the quadrature feed network and having four conductor elements helically arranged to define a cylinder of constant substantial radius, the second quadrifilar helix being formed of two bifilar helices arranged orthogonally and excited in quadrature phase, wherein the second quadrifilar helix is wound in opposite sense with respect to the first quadrifilar helix. 7, - The antenna of claim 6, wherein the respective conductive elements of the first and second quadrilateral helices are conductively coupled. 8. The antenna of claim 6, wherein the lengths of the conductor elements for the first quadrifilar helix are greater than the lengths of the conductor elements for the second euadrifilar helix. 9. The antenna of claim 6, wherein the second quadrifilar helix is concentrically placed within the first quadrifilar helix, 10. The antenna of claim 9, wherein the frequency band within which the second is operable. quadrifilar helix is greater than the frequency band within which the first quad helix is operable. 11, - The antenna of claim 10. in , wherein the first quadrifilar helix is used to transmit signals during a satellite mode of operation, 12. The antenna of claim 10, wherein the second quadrilateral helix is used to receive signals during a satellite mode of operation, 13, - The antenna of claim 6, wherein the radius of the first quadrilateral helix is greater than the radius of the second quadrifilar helix. 14, - The antenna of claim 6, wherein one of the first and second quadrilateral propellers is powered with a different circular mode so that the antenna is operable in a monopole mode within a third frequency band. 15, - The antenna of claim 6. wherein one of the first and second quadriform propellers is powered with a different circular mode and the other of the propellers acts as a parasitic element so that the antenna is operable in a monopole within a third frequency band, 16. The antenna of claim 15, wherein the conducting elements of the driven quadrifilar propeller are phased, 17. The antenna of claim 6, wherein the quadrature feed network further comprises a balanced 90a branch line coupler, connected to the propellers. first and second quadrilaterals, 18, - The antenna of claim 6, the first and second quadrifilar propellers further comprising a dielectric film with a metallized pattern formed on each side thereof, the film being wrapped and fixed in a cylindrical configuration, , - The antenna of claim 6, the quadrature feed network further comprising a third feed point for a third frequency band. 20, - An antenna for transmitting and receiving signals within a first frequency band and a second frequency band, comprising: (a) a flexible sheet of film having a first side and a second side: (b) a first Metallic pattern formed on the first side of the film sheet including a plurality of spiral arms connected to a coiler: and (c) a second metallized pattern formed on the second side of the film sheet including a plurality of spiral arms connected to a coupler: wherein the sheet of film is formed towards a cylindrical tube having a longitudinal axis therethrough so that a first coaxial quadrifilar helix is constructed by the spiral arms of the first metallized pattern and a second coaxial quadrifilar helix it is constructed by means of the spiral arms of the second metallized pattern, the first and second quadrifilar helices being rolled in a good-looking direction to avoid electromagnetic coupling between them. 21. The antenna of claim 20 wherein the first and second quadrifilar propellers are coupled conductively to provide circular polarization of opposite direction in the first and second frequency bands. 22. The antenna of claim 20, wherein the film sheet is made of a dielectric material. 23, - The antenna of claim 20. wherein the lengths of the aspherical arms of the first quadrifilar helix are -more than the lengths of the spiral arms of the second quadrifilar helix, 24. - The antenna of claim 20, wherein the second quadrifilar helix is concentrically positioned within the first quadrifilar propeller, the antenna of claim 24, wherein the first quadrifilar helix is used to transmit signals during an operation mode. 26.- The antenna of claim 24, wherein the first quadrilateral helix is used to receive signals during a satellite mode of operation, 27. - The antenna of claim 20 wherein the radius of the first quadrifilar propeller is greater than the radius of the second quadriferous propeller, 28. The antenna of claim 20, wherein one of the first and second quadrifilar propellers is It feeds a different circular mode so that the antenna is operable in an onopolo mode within a designated frequency band. 29. The antenna of claim 20, further comprising a quadrature feed network connected to the first and second quadrifilar propellers. 30, - In a portable telephone having an RF circuit contained within a main housing for operating the portable telephone in both cellular and d © satellite modes, an antenna assembly comprising: (a) a base member connected to the main housing of the Portable Phone; and (b) a dome member rotatably connected to the base member, the dome member containing an antenna printed thereon which is capable of transmitting and receiving signals in cellular and satellite operation modes, antenna of the claim 30, further comprising a hinge member connected to the dome member that is rotatably coupled to the base member, wherein the dome member is rotatable about an axis between a first position adjacent a side surface of the main housing and a second position, 32.- The antenna assembly of the claim 31, further comprising an elbow member connected to the hinge member at a first end and connected to the dome member at a second end, 33 - The antenna assembly of the claim 32, wherein the dome member is oriented substantially perpendicular to the hinge member, 34, - The antenna assembly of the claim 33, wherein the antenna array substantially as L-shaped. 35. The antenna assembly of claim 31, wherein the dome member is positioned in the first position during disconnected and standby modes of the portable telephone, 36.- The antenna assembly of claim 31, wherein the member dome is placed in the second position during signal transmission and reception, 37, - The antenna assembly of claim 30, wherein the base member is detachably mounted to the main housing of the portable telephone. 38.- The antenna assembly of the claim 30, wherein the dome member is substantially configured as a cylindrical tube. 39, - The antenna assembly of claim 32, further comprising a plurality of coaxial cables connected to the antenna printed on the dome member at one end and to corresponding connectors placed in the main housing at a second end, wherein the antenna printed circuit is connected to the RF circuit. 40.- The antenna assembly of the claim 39, the coaxial cores being positioned through the dome member, the elbow member, the hinge member and the phase member. 41, - The antenna assembly of the claim 31, the axis of rotation of the antenna assembly being oriented substantially parallel to an upper surface of the main housing. 42. - The antenna assembly of claim 32, the elbow member further comprising an access opening therein and an access cover removably mounted thereto. 43, - E \ antenna assembly of claim 30, the printed antenna further comprising: (a) a sheet of flexible film made of dielectric material having a first side and a second side; (b) a first metallized pattern applied to the first side of the flexible film sheet; and (c) a second metallized pattern applied to the second side of the flexible film sheet; wherein at least one quadrifilar helix is formed when the flexible film sheet is rolled into a cylindrical tube and placed inside the dome member. 44.- The antenna assembly of the claim 43, wherein the first metallized layer includes a first pair of spiral arms and the second metallized layer includes a second pair of spiral arms oriented so as to form a quadrifilar helix, 45 - The antenna assembly of the claim 44, wherein the first and second pairs of steerable arms have a length substantially equal to a quarter wavelength of a desired frequency of operation, 46, - The antenna assembly of the claim 44, wherein the first and second paras of spiral arms have a length substantially equivalent to three quarters of wavelength of a desired operating frequency. 47, - Fl antenna assembly of claim 44, further comprising a coupler connected to the printed antenna, wherein the printed antenna has a circular polarization when the coupler is balanced and the printed antenna has a linear polarization when the coupler is unbalanced 48. The antenna assembly of claim 47, the coupler further comprising a first port for the quadrilateral helix when in a circular polarization mode and a second port for the quadrifilar helix when in a linear polarization mode, . - The antenna assembly of claim 48, the coupler further comprising a false load connected to the second port of the coupler so as to terminate the balanced mode of the coupler in the second port. BO, - The antenna assembly of claim 48, which further comprises a short circuit between the first and second metallized layers of the printed antenna and the short circuit acting as a feed point for the printed antenna when the coupler is in the mode unbalanced 51, - The antenna assembly of the claim 43. wherein the first metallized layer includes a first set of spiral arms to form a first quadrifilar helix of a first designated radius and the second metallized layer includes a second set of spiral arms to form a second quadrifilar helix of a second designated radius 52.- The antenna assembly of claim 51, wherein the suction arms of the first quadrifilar helix have a longer length than the spiral arms of the second quadrifilar helix. 53, - The antenna assembly of claim 51, wherein the suction arms of the first quadrifilar helix are wound in an opposite direction to the spiral arms of the second quadrifilar helix, 54. The antenna assembly of the claim 51, wherein the radius of the first quadrilateral helix is greater than the radius of the second quadrifilar helix, 55, - The antenna assembly of claim 51, wherein the spiral arms of the first quadrifilar helix do not touch the the second quadrifilar helix where crossed, 56, - The antenna assembly of claim 51, the first and second metallized patterns further comprising a balanced quadrature branch line coupler connecting the printed antenna to a plurality of coaxial cables, wherein a spiral arm of each of the first and second quadrilateral helices is connected to each leg of the coupler. 57.- The antenna assembly of the claim 56, the printed antenna further comprising a plurality of channels veneered in the flexible film sheet so that a spiral arm of the first and second metallized patterns connected to a leg of the coupler is capable of branching, extending through one of the plated channels , and provide a spiral arm in the opposite metallized pattern. 58, - The antenna assembly of claim 56, the coupler providing a first port for the first quadrifilar propeller and a second port for the second quadrifilar propeller, 59. The antenna assembly of claim 58, further comprising a circuit open on one of the first and second coupler ports in such a way that the printed antenna operates with a linear polarization when a frequency is provided thereto. 60.- The antenna assembly of claim 59, wherein the quadrifilar helix associated with the coupler gate in which the open circuit is not provided acts as a parasitic element, 61, - The antenna assembly of claim 56, wherein the printed antenna operates with a circular polarization when the coupler is in a balanced mode, 62, - the antenna assembly of claim 56. where the printed antenna operates with a linear polarization when the coupler is in an unbalanced mode, 63. - the antenna assembly of claim 51, wherein the first quadrifilar helix is adapted for a lower signal frequency than the second quadrifilar helix. 64 - A quadrifilar propeller antenna, comprising: a) a flexible sheet of dielectric film. (b) a first pair and a second pair of conductor arms printed on the flexible sheet of dielectric film such that the conductor arms form a grid helix when the flexible sheet is wound towards a cylindrical tube .; and (c) a balanced branch line coupler 90a printed on the flexible sheet of dielectric film, wherein the coupler is capable of providing two output signals balanced in 5 quadrature phase relative to each other, the coupler comprising further: (1) a first output port connected to the first pair of conductor arms, the first output port having 0 a first terminal to provide a portion in phase of a first output signal to one of the first pair of conductor arms and a second terminal to provide a portion 15 anti-phase of the first output signal to the other of the first pair of conductor arms; (2) a second exit port connected to the second pair of arms 20 conductors, the second output port having a first termini to provide a portion in phase of a second output signal to one of the second pair of conductor arms 25 and a second terminal for providing an anti-phase portion of the second output signal to the other of the second pair of conductor arms; and (3) at least one input port for receiving an input signal and dividing the input signal between the first and second pairs of conducting arms in relative phase progression in a d-e manner with circular wave polarization. 65, - The quadrifilar propeller antenna of claim 64, wherein the first pair of driver arms are in diametrically opposite relationship and the second pair of arms are in diametrically opposite relationship. 66. The quadrifilar propeller antenna of claim 65, wherein the first pair of conductor arms and the second pair of conductor arms are interposed at approximately 90s with respect to each other. 67.- The quadrifilar propeller antenna of claim 64, wherein one of the first pair and one of the second pair of conductor arms is placed on a first surface of the flexible sheet and the other the first and second pairs of conductor arms is placed .support a second surface of the flexible sheet. 68.- The quadrifilar propeller antenna of claim 64, wherein the coupler has a second input port that is unbalanced so that an input signal provided thereto is divided between the conductor arms in a manner to be radiated with a linear wave polarization, SUMMARY OF THE INVENTION An antenna operable in two triggered frequency bands is described as including a first quadrifilar helix having four conductive elements helically arranged to define a cylinder of substantially constant radius, wherein the first quadrilateral helix is formed of two bifilar helices arranged orthogonally and excited in quadrature of phase A quadrature feed network is connected to the first quadrifilar helix, wherein an extra one of a coupling element thereof is connected to a first end of each conductive element. The quadrature feed network also includes a first feed point for operation of the antenna with circular polarization in a first frequency band and a second feed point for operation of the antenna with linear polarization in a second frequency band. The antenna may include a second quadrifilar helix connected to the quadrature feed network and having four conductor elements arranged helically to define a cylinder of substantially constant radius, wherein the second quadrifilar helix is formed by two orthogonally excited and bifilar helices. in quadrature of phase. The second quadrifilar helix is wound in the opposite direction with respect to the first quadrifilar helix so as to be conductively coupled to it.