JP4929372B2 - Waveguide diplexer and waveguide - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve performance by simply and easily achieving highly precise production. <P>SOLUTION: First to third direct pipes 141, 142, 143 forming a waveguide path 14 are laminated to form a desired waveguide path shape by respectively piling up and disposing a plurality of plates of first to seventh plate-like bodies 101 to 107. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a waveguide diplexer and a waveguide used, for example, in communication equipment and radar devices.

  Generally, a waveguide diplexer has a transmission port, a reception port, and an antenna port formed on the outer peripheral wall of a diplexer body as shown in FIG. The transmission port 1, the reception port 2, and the antenna port 3 are communicated with each other via a waveguide path 4 a formed in the diplexer body 4. In such a waveguide diplexer, a transmitter, a receiver, and an antenna (not shown) are connected to the transmission port 1, the reception port 2 and the antenna port 3 of the diplexer body 4 to constitute a desired communication system.

  By the way, in such a waveguide diplexer, a first metal block 4b in which the transmission port 1 and the reception port 2 are formed and a second metal block 4c in which the antenna port 3 is formed are shown in FIG. And 3 metal blocks 4d. These first to third metal blocks 4b, 4c, and 4d are formed by machining such as cutting and have a desired shape such as a desired filter structure that communicates with each other or an impedance matching device structure. A waveguide path is formed.

  The waveguide 4a is formed by communicating first to third ducts 5a, 5b, and 5c formed by first to third metal blocks 4b, 4c, and 4d. The first and second ducts 5 a and 5 b of the two metal blocks 4 b and 4 c are communicated with the transmission port 1, the reception port 2 and the antenna port 3. Such a waveguide 4a includes the first duct 5a of the first metal block 4b and the second duct of the second metal block 4c among the third ducts 5c of the third metal block 4d. A side wall A (see FIG. 10) communicating with the second duct 5b is formed with a desired inclination angle, and the four corner angles R (see FIG. 11) of the third duct 5c of the third metal block 4d are formed. ) Is formed in a right-angle shape, reflection of the inserted signal is suppressed, insertion loss is reduced, and highly accurate shunt / coupling characteristics are ensured.

  However, in the waveguide diplexer, it is difficult to cut the four corners R of the third conduit 5c of the third metal block 4d at right angles because of the machining accuracy, as shown in FIG. Since a slight arc is drawn, there is a problem that the waveguide characteristics are deteriorated. Further, due to the manufacturability of machining, the side wall A of the third conduit 5c of the third metal block 4d is formed with a predetermined inclination angle so as to suppress reflection of the inserted signal. Since it is difficult and has a substantially vertical shape (see FIG. 10), the incident signal is reflected by the side wall A and causes a signal loss. In particular, these problems become significant when miniaturization is promoted.

  In addition, because of the structure of the waveguide 4a, it is difficult to cut the pipe into a complicated shape such as an overhang shape, so it is difficult to form a high-precision filter structure, and the design is free. There is a problem that the degree is inferior.

  Such a situation is not limited to the above-mentioned waveguide diplexer, but is provided in, for example, a radar device or the like, and is used to guide a radio wave from a transmitter to an antenna or to supply a signal received by the antenna to a receiver. The same applies to the tube.

  That is, when a filter is formed in the middle of the waveguide or an impedance matching device is formed, the inside of the waveguide is cut into a complicated shape such as the overhang shape. Is required.

  However, in the above waveguide, similarly, it is difficult to cut a complicated shape, and it is difficult to manufacture with high precision. Therefore, the insertion loss is reduced, and the degree of freedom in design is reduced due to the difficulty in manufacturing. Has the problem of being inferior.

  As described above, the conventional waveguide diplexer has a problem that it is difficult to process with high accuracy, resulting in a decrease in insertion loss and inferior design freedom.

  The present invention has been made in view of the above circumstances, and provides a waveguide diplexer and a waveguide that realize high performance so that high-precision manufacturing can be realized easily and easily. Objective.

According to the present invention, a plurality of plate-like bodies having holes processed through the plate surface are stacked, and the plurality of plate-like bodies are formed with at least one port of a transmission port, a reception port, and an antenna port. A waveguide that is sandwiched between a plate-like body of 1 and a second plate-like body in which other ports of the transmission port, the reception port, and the antenna port are formed, and communicates with the transmission port, the reception port, and the antenna port. A waveguide diplexer was configured by including a waveguide formed by providing a waveguide wall in the direction of the tube axis at the hole processing portion of the plurality of plate-like bodies.

  According to the above configuration, the straight tube portion of the waveguide is formed in a laminated structure in which a plurality of plate-like bodies are stacked and arranged in either the signal propagation direction or the direction crossing the signal propagation direction. As a result, the plurality of plate-like bodies cooperate to form a desired shape. This makes it possible to reduce the dimensional error in the thickness direction of the machined plate-like body, to increase the precision of the shape dimension in the straight pipe section of the waveguide, and to process a complicated shape. High performance can be achieved.

Further, according to the present invention, by arranging a plurality of plate-like bodies having holes processed to penetrate through the plate surface, the waveguide wall is formed in the hole machining portion of the plurality of plate-like bodies in the tube axis direction. We configured the provided waveguide line waveguide Ru comprising a.

  According to the above configuration, at least a part of the waveguide is formed in a laminated structure in which a plurality of plate-like bodies are stacked in either the signal propagation direction or the direction crossing the signal propagation direction. As a result, the plurality of plate-like bodies cooperate to form a desired shape. This makes it possible to reduce the dimensional error in the thickness direction of the machined plate-like body, increase the precision of the waveguide shape, and enable processing of complex shapes, resulting in higher performance. Can be achieved.

  As described above in detail, according to the present invention, it is possible to provide a waveguide diplexer and a waveguide that achieve high performance so that high-precision manufacturing can be realized easily and easily. .

It is the top view which showed the antenna port side of the waveguide diplexer which concerns on one embodiment of this invention. FIG. 2 is a cross-sectional view illustrating a main part of FIG. 1. It is the top view which showed the transmission port and receiving port side of FIG. It is sectional drawing which cut and showed the principal part of the waveguide diplexer which concerns on other embodiment of this invention. It is the top view which took out and showed the plate-shaped object of FIG. It is the disassembled perspective view which decomposed | disassembled and showed FIG. 1 is a cross-sectional view showing a waveguide according to an embodiment of the present invention. It is sectional drawing which showed the waveguide which concerns on other embodiment of this invention. It is sectional drawing which showed the waveguide which concerns on other embodiment of this invention. It is sectional drawing which showed the conventional waveguide diplexer. It is the top view which took out and showed a part of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 3 show a waveguide diplexer according to an embodiment of the present invention. FIG. 1 shows a state seen from the antenna port side, and FIG. 2 shows a state seen from the side. FIG. 3 shows a state seen from the transmission port and the reception port side.

  That is, the diplexer body 10 has a laminated structure in which a plurality of sheets made of, for example, a metal material of approximately 0.3 mm, for example, first to seventh plate-like bodies 101 to 107 are stacked and have a predetermined thickness dimension. Formed. Examples of the metal material include aluminum, stainless steel, copper, brass, low thermal expansion materials such as invar and super invar, and low thermal expansion forging materials such as low carbon steel materials and extremely low carbon steel materials.

  Among them, the antenna plate 11 for antenna connection is formed in the first plate-like body 101 in the uppermost layer, and the transmission port 12 and receiver for connecting to the transmitter are provided in the seventh plate-like body 107 in the lowermost layer. A reception port 13 for connection is formed. The first and seventh plate-like bodies 101 and 107 are formed with waveguide paths 14 that connect the antenna port 11, the transmission port 12, and the reception port 13.

  The waveguide 14 constitutes a first straight pipe portion 141 that communicates with the antenna port 11 by the first and second plate-like bodies 101 and 102, and the third and fourth plate-like bodies 103. , 104 constitutes a second straight pipe part 142 in which a filter structure for separating and combining signals is formed, and the fifth to seventh plate-like bodies 105, 106, 107 constitute the transmission port 12 and the reception port. 13 constitutes a third straight pipe portion 143 that communicates with 13. Among these, the third and fourth plate-like bodies 103 and 104 have side walls that are continuous with the first straight pipe portion 141 and the third straight pipe portion 143 that change the signal propagation direction by approximately 90 ° with desired inclination angles. It is formed in a staircase shape.

  The first to seventh plate-like bodies 101 to 107 are provided with alignment markers (not shown), for example, and are stacked while checking the front and back sides of the plates based on the markers (not shown). The

  Further, each of the first to seventh plate-like bodies 101 to 107 includes a plurality of, for example, three positioning holes 15 (for convenience of illustration, the first and seventh plate-like bodies in FIGS. 1 and 3). Are formed at predetermined intervals corresponding to each other. Positioning pins 16 are inserted into the positioning holes 15 of the first to seventh plate-like bodies 101 to 107 in a plate-like volume state. Accordingly, the first to seventh plate-like bodies 101 to 107 are positioned with each other in cooperation with the positioning holes 15 and the positioning pins 16. At this time, the positioning pin 16 conducts between the first to seventh plate-like bodies 101 to 107 and sets them to the same potential.

  Note that the stacking direction of the first to seventh plate-like bodies 101 to 107 is either the signal propagation direction or the direction intersecting with the signal propagation direction depending on the shape of the waveguide 14 or the like. Is set appropriately.

  In the above-described configuration, the first to seventh plate-like bodies 101 to 107 are formed in a shape and dimension determined by design by machining such as cutting, pressing, etching, and laser processing. At this time, the first to seventh plate-like bodies 101 to 107 are formed with the alignment markers (not shown) and the positioning holes 15 for positioning each other.

  And these 1st thru | or 7th plate-shaped objects 101-107 are determined by the front and back etc. based on the marker (not shown), and are piled up, and the positioning pin 16 is set with respect to the positioning hole 15. It is inserted and positioned, and is joined and formed into a laminated structure by a joining processing means such as diffusion joining, brazing joining, and grad material joining.

  Here, the waveguide path 14 formed by the first to seventh plate-like bodies 101 to 107 transmits the transmission signal input to the transmission port 12 to the third straight pipe portion 143 and the second straight pipe portion. 142, the first straight pipe portion 141 is guided to the antenna port 11, and the reception signal input to the antenna port 11 is transmitted to the first straight pipe portion 141, the second straight pipe portion 142, and the third straight pipe portion 141. The information is guided to the reception port 13 via the pipe part 143.

  As described above, the waveguide diplexer includes the first to third straight pipe portions 141, 142, and 143 that form the waveguide path 14, and the plurality of first to seventh plate-like bodies 101 to 107. The plate materials were stacked and arranged so as to form a desired waveguide path shape.

  According to this, the 1st thru | or 3rd straight pipe | tube parts 141, 142, and 143 are formed in the laminated structure which piled up the several sheets of the 1st thru | or 7th plate-shaped bodies 101-107, respectively. Since the dimensional error in the thickness direction of the first to seventh plate-like bodies 101 to 107 and the thermal deformation at the time of processing can be suppressed, the shapes in the first to third straight pipe portions 141, 142, 143 High precision of dimensions can be achieved.

  Further, according to this, the first to third straight pipe portions 141, 142, 143 are formed by using the first to seventh plate-like bodies 101 to 107 having a relatively small thickness. As a result, processing of complicated shapes can be easily realized, and the performance of the diplexer can be improved.

  For example, in the third and fourth plate-like bodies 103 and 104, side walls continuous with the first straight pipe portion 141 and the third straight pipe portion 143 that change the signal propagation direction by approximately 90 ° are formed in a step shape. As a result, it is possible to form a desired inclination angle that is optimal for suppressing signal reflection, and it is possible to perform transmission with almost no loss while effectively suppressing signal reflection. In this case, the second straight pipe portion can be formed in a planar shape having a substantially inclined angle θ by forming a laminated structure in which more plate-like bodies are stacked.

  In the above embodiment, the filter structure is described. However, the present invention is not limited to this, and other shapes such as an impedance matching device structure can be formed to secure desired characteristics. It is.

  Moreover, in the said embodiment, all the 1st thru | or 3rd straight pipe parts 141, 142, and 143 which comprise a waveguide way are laminated | stacked by stacking the 1st thru | or 7th plate-shaped bodies 101-107. Although the case where it is configured to be formed in the structure has been described, the present invention is not limited to this. For example, as shown in FIGS. 4 to 6, first to third straight pipe portions 201 and 202 that form the waveguide 20 are formed. , 203, only the second straight pipe portion 202 may be configured in a stacked structure in which four plate-like bodies 21 are stacked. However, in FIG. 4 to FIG. 6, for the sake of convenience, the same parts as those in FIG. 1 to FIG.

  The four plate-like bodies 21 forming the second straight pipe portion 202 are stacked and subjected to a joining process by a method substantially the same as that of the above embodiment to form a laminated structure. In this case, the first straight pipe portion 201 and the third straight pipe portion 203 of the waveguide path 20 are formed by machining each of the block bodies 22 and 23 to form the four plate-like shapes. The second straight pipe portions 202 formed by stacking the bodies 21 are stacked and joined so as to sandwich them.

  Also in this embodiment, the stacking direction of the four plate-like bodies 21 constituting the second straight pipe portion 202 is in accordance with the shape of the waveguide 20 and the like in substantially the same manner as in the above embodiment. The signal propagation direction or the direction crossing the signal propagation direction is set in one direction.

  Also in the embodiment of FIGS. 4 to 6, for example, the four plate-like bodies 21 and the block bodies 22 and 23 are not shown for convenience of illustration, as in the above-described embodiment. An alignment marker and a positioning hole 15 (see FIG. 1) are provided, respectively, and at the time of the stacking operation, the front and back surfaces of the respective plate surfaces are determined based on the marker and stacked. At the same time, the plurality of plate-like bodies 21 are formed so that the respective positioning holes 15 face each other, and the positioning pins 16 (see FIG. 1) are inserted into the respective positioning holes 15 so that the mutual positioning can be performed. Done.

  Next, a waveguide according to an embodiment of the present invention will be described. A feature of the present invention is that a part of the straight tube portion of the waveguide 30 that guides the signal input from one side to the other is formed by a plurality of plate-like bodies as shown in FIGS. 7, 8, and 9, for example. 30, 31 and 32 are formed in a laminated structure in which the respective layers are stacked in the signal propagation direction.

  That is, FIG. 7 is configured to form and arrange a plurality of stacked plate-like bodies 30 so that the pipe length is set to be long so that the phase of the signal is controlled to a desired value in cooperation with each other. Is.

  8 and 9 are configured such that a plurality of plate-like bodies 31 and 32 are formed and arranged so as to form a filter structure for selecting a signal having a desired frequency.

  Here, the plurality of plate-like bodies 30, 31, and 32 shown in FIGS. 7 to 9 are joined and formed in a stacked structure by a technique substantially the same as that of the above-described diplexer configuration in a stacked arrangement. Is done.

  Even in the case of these waveguide configurations, for example, as in the above-described diplexer configuration, the plurality of plate-like bodies 30, 31, and 32 are not shown for convenience of illustration, but are alignment markers. And positioning holes are provided, respectively, and at the time of the stacking operation, the front and back of each plate surface is determined based on the marker and stacked. At the same time, the plurality of plate-like bodies 30, 31, and 32 are formed so that their positioning holes 15 (see FIG. 1) face each other, and the positioning pins 16 (see FIG. 1) are inserted into the positioning holes 15. By inserting, positioning between each other is performed.

  Also in this embodiment of the waveguide configuration, the stacking direction of the plurality of plate-like bodies 30, 31, 32 is set to either the signal propagation direction or the direction crossing the signal propagation direction. The

  Therefore, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

  For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the problems described in the column of problems to be solved by the invention can be solved, and the effects described in the effects of the invention can be obtained. In some cases, a configuration from which this configuration requirement is deleted can be extracted as an invention.

  DESCRIPTION OF SYMBOLS 10 ... Diplexer main body, 101 ... 1st plate-shaped body, 102 ... 2nd plate-shaped body, 103 ... 3rd plate-shaped body, 104 ... 4th plate-shaped body, 105 ... 5th plate-shaped body, 106: Sixth plate, 107: Seventh plate, 11: Antenna port, 12: Transmit port, 13: Receive port, 14: Waveguide path, 141: First straight tube section, 142 ... 2nd straight pipe part, 143 ... 3rd straight pipe part, 15 ... Positioning hole, 16 ... Positioning pin, 20 ... Waveguide path, 201 ... 1st straight pipe part, 202 ... 2nd straight pipe , 203 ... third straight pipe part, 21 ... plate-like body, 22 ... block, 23 ... block, 30 ... plate-like body, 31 ... plate-like body, 32 ... plate-like body.

Claims (8)

A plurality of plate-like bodies having holes processed to penetrate through the plate surface are stacked, and the plurality of plate-like bodies are formed as a first plate shape in which at least one port of a transmission port, a reception port, and an antenna port is formed. A waveguide that communicates with the transmission port, the reception port, and the antenna port, and a waveguide path that communicates with the transmission port, the reception port, and the antenna port. A waveguide diplexer comprising a waveguide formed by providing a waveguide wall in the tube axis direction at a hole processing portion of a plurality of plate-like bodies. A plurality of plate-like bodies are stacked, and each plate-like body is provided with a hole penetrating in the stacking direction, and the plurality of plate-like bodies are connected to at least one port of a transmission port, a reception port, and an antenna port. The transmission port, the reception port, and the antenna port are sandwiched between the first plate member formed with the second plate member formed with the other ports of the transmission port, the reception port, and the antenna port. A waveguide diplexer comprising: a waveguide formed by providing a waveguide wall in a tube axis direction with a plurality of plate-like holes in communication with a waveguide path communicating with the plate.   The waveguide diplexer according to claim 1, wherein the plurality of plate-like bodies are provided with alignment markers, and are stacked with their surface directions aligned based on the markers.   The waveguide according to any one of claims 1 to 3, wherein the plurality of plate-like bodies are provided with positioning holes, and positioning pins are inserted into the positioning holes to position each other. Pipe diplexer. A waveguide in which a plurality of plate-like bodies subjected to hole processing penetrating the plate surface are stacked and a waveguide wall is provided in a hole machining portion of the plurality of plate-like bodies in the tube axis direction. waveguide, wherein Rukoto with the road. A plurality of plate-like bodies are stacked, and each plate-like body is provided with a hole penetrating in the stacking direction, so that the waveguide wall extends in the tube axis direction of the holes of the plurality of plate-like bodies. waveguide, characterized in Rukoto comprising a waveguide path provided by.   7. The waveguide according to claim 5, wherein the plurality of plate-like bodies are provided with alignment markers, and are stacked with their surface directions aligned based on each marker.   The waveguide according to any one of claims 5 to 7, wherein the plurality of plate-like bodies are provided with positioning holes, and positioning pins are inserted into the positioning holes to position each other. tube.

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