CN105633541B - A kind of open sleeve antenna - Google Patents
A kind of open sleeve antenna Download PDFInfo
- Publication number
- CN105633541B CN105633541B CN201610135658.2A CN201610135658A CN105633541B CN 105633541 B CN105633541 B CN 105633541B CN 201610135658 A CN201610135658 A CN 201610135658A CN 105633541 B CN105633541 B CN 105633541B
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- antenna
- sleeve
- metal sleeve
- oscillator
- antenna oscillator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Support Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
The present invention discloses a kind of open sleeve antenna, and antenna oscillator is columnar metallic rod；Metal sleeve is tubular-shaped open formula sleeve up and down；Metal sleeve is centered around the outside of antenna body, and the central axes of metal sleeve are overlapped with the central axes of antenna oscillator；Dielectric is filled between the lateral wall of antenna oscillator and the madial wall of metal sleeve, which is fixed together antenna oscillator and metal sleeve, forms sleeve antenna structure；Sleeve antenna structure and sub-miniature A connector are embedded on metallic ground box.The present invention utilizes open sleeve, the stock size on hand held antenna floor is adapted to, it eliminates a part and uses the influence to antenna low frequency part standing-wave ratio when non-open type sleeve, and by loading lumped parameter inductance in feed port, offset electronically small antenna condensance, ladder-like antenna oscillator is equivalent to top-loaded and is used for whole impedance matching again, reach miniaturization, with the characteristics such as wide.
Description
Technical field
The present invention relates to antenna technical fields, and in particular to a kind of open sleeve antenna.
Background technology
With the rapid development of electronics industry, communication system requires be continuously improved to the performance and size of antenna.Ruler
Very little miniaturization is always the hot spot of antenna development.In theory, the size of antenna is smaller, and Q values are higher, working band
Width is largely restricted.It needs that the flat floor separately set is coordinated to carry out group for monopole antenna, when use
It could work after dress, that is to say, that need the wide face (i.e. floor front or the back side) that monopole antenna is perpendicularly inserted into floor
On, and make antenna vertical with the surface on floor.The shortcomings that this antenna oscillator, is inconvenient for use, and narrower bandwidth.Although set
Cylinder load has an apparent effect for the extension of the beamwidth of antenna, and all channel antenna of the sleeve load also quilt in modern communication
Extensive use, but generally to the analysis of sleeve antenna and design, be all disposed upon on infinitely great or limited big floor.For
For antenna, the electrical characteristics in antenna operating band can be influenced in addition to itself structure, the floor used also can be to antenna performance
Generate certain influence.And it is usually to be different from conventional aerial to require antenna to have portability, floor for hand held antenna
Used planar structure analyzes design even with moment method, although when installation site changes, antenna performance changes
It is less, but because the size that sleeve and antenna radiator is added is all bigger than normal, lack the portability as hand held antenna, thus cover
Cylinder load is not applied in existing hand held antenna always.
Invention content
The technical problem to be solved by the present invention is to existing hand held antennas there is a problem of narrow bandwidth and inconvenient for use, provide
A kind of open sleeve antenna.
To solve the above problems, the present invention is achieved by the following technical solutions：
A kind of open sleeve antenna, including antenna body, the antenna body include antenna oscillator, dielectric, gold
Belong to sleeve, lumped parameter inductance, metallic ground box and sub-miniature A connector.Antenna oscillator is columnar metallic rod；Metal sleeve is upper and lower
The tubular-shaped open formula sleeve of perforation；Metal sleeve is centered around the outside of antenna body, and the central axes of metal sleeve shake with antenna
The central axes of son overlap；Dielectric is filled between the lateral wall of antenna oscillator and the madial wall of metal sleeve, which is situated between
Antenna oscillator and metal sleeve are fixed together by matter, form sleeve antenna structure.Metallic ground box is in hollow square box shape；On
It states sleeve antenna structure to be embedded on the leptoprosopy i.e. side wall of metallic ground box of metallic ground box, and metal sleeve and metallic ground
Box connects.Sub-miniature A connector is equally embedded on metallic ground box, and the outer layer metal of sub-miniature A connector is connect with metallic ground box, SMA
The inner core of connector is connect via a lumped parameter inductance with antenna oscillator.
In said program, antenna oscillator is in gradual change stepped cylindrical, i.e., along the axis direction of antenna oscillator, antenna shakes
The radius of son is in segmented gradual change.
In said program, radius of the antenna oscillator close to metallic ground box one end is less than antenna oscillator far from metallic ground box
The radius of one end.
In said program, metal sleeve is looped around 1/3 to 1/2 place of the lower part of antenna body.
In said program, halfpipe that metal sleeve is surrounded by two circular arc-shaped metal pieces.
In said program, one end of lumped parameter inductance is connect with antenna oscillator, the other end and SMA of lumped parameter inductance
The inner core of connector connects.
In said program, dielectric is polytetrafluoroethylene (PTFE).
The present invention utilizes open sleeve, has adapted to the stock size on hand held antenna floor, eliminates a part of using non-
To the influence of antenna low frequency part standing-wave ratio when open sleeve, and by loading lumped parameter inductance in feed port, offset
Electronically small antenna condensance, ladder-like antenna oscillator are equivalent to top-loaded for whole impedance matching again, reach miniaturization,
With the characteristics such as wide.
Compared with prior art, the present invention has following features：
1. for individual antenna, overall dimensions radius is less than 19mm, and length is less than 200mm, reaches miniaturization；
2. antenna performance is good, in working frequency range, standing-wave ratio is substantially at 1.5 or less；
3. basic structure is simple, realization easy to process can be processed into detachable structure, be carried for practical convenient for assembling
In.
Description of the drawings
Fig. 1 is a kind of longitudinal section view of open sleeve antenna.
Fig. 2 is a kind of A-A of open sleeve antenna to sectional elevation.
Figure label：1, antenna oscillator；2, dielectric；3, metal sleeve；4, lumped parameter inductance；5, metallic ground
Box；6, sub-miniature A connector.
Specific implementation mode
A kind of open sleeve antenna, as illustrated in fig. 1 and 2, by antenna oscillator 1, dielectric 2, metal sleeve 3, lump
Parameter inductance 4, metallic ground box 5 and sub-miniature A connector 6 form.
Antenna oscillator 1 is columnar metallic rod.In preferred embodiment of the present invention, antenna oscillator 1 is copper metal.Antenna shakes
Son 1 can be that the consistent standard of upper and lower radius is cylindric.But in order to make the impedance of antenna itself obtain good matching, in this hair
In bright preferred embodiment, antenna oscillator 1 is in gradual change stepped cylindrical, i.e., along the axis direction of antenna oscillator 1, antenna oscillator 1
Radius be in segmented gradual change, each section of radius is all different with length.Antenna oscillator 1 is close to 5 one end of metallic ground box
Radius is less than radius of the antenna oscillator 1 far from 5 one end of metallic ground box.Stage shape metal is considered as top loading capacitance, i.e.,
The effect of distributed load capacitance is conducive to the impedance matching of antenna so also functioning to certain effect to impedance matching.Grading structure
Application can ensure to extend certain bandwidth while curent change is smaller on antenna oscillator 1.In addition, ladder graded junction
Structure, antenna oscillator 1 are divided into multiple portions, and the size per part-structure is all different, and the part and ground that each section has more are mutual
Effect is equivalent to the case where distribution capacity loads, so as to pass through the reactive part of the different adjustment antenna of every partial radius
Point, while the height equivlent of antenna is increased, it can effectively realize antenna miniaturization.Though this structure can make antenna impedance whole
Body is in capacitive, but can pass through the matched well in the realization impedance of feed port loaded cable.
Metal sleeve 3 is tubular-shaped open formula sleeve up and down.Metal sleeve 3 is centered around the outside of antenna body, and
The central axes of metal sleeve 3 are overlapped with the central axes of antenna oscillator 1.The madial wall of the lateral wall and metal sleeve 3 of antenna oscillator 1
Between be filled with dielectric 2, which is fixed together antenna oscillator 1 and metal sleeve 3, forms sleeve antenna
Structure.Selection for 3 length of metal sleeve, however, it would be possible to be any a part of i.e. from zero of 1 length of entire antenna oscillator
(no sleeve) constitutes the entire radiant section of antenna to sleeve.But in a preferred embodiment of the invention, metal sleeve 3 is looped around
1/3 to 1/2 place of the lower part of antenna body, can reach best bandwidth characteristic.In a preferred embodiment of the invention, metal sleeve
3 be tinfoil paper, and dielectric 2 is polytetrafluoroethylene (PTFE).Polytetrafluoroethylene (PTFE) both sides are metal as open metal sleeve 3 and and metal
It is grounded box 5 to connect, can effectively expand bandwidth, can reach good bandwidth characteristic in the case where selecting suitable altitudes.Set
Cylinder antenna structure inherently has the characteristics that broadband and encourages multiple resonance points, it is the pipe for surrounding internal radiating element by one section
Shape sleeve is combined with interior radiating element.The practical feed point of sleeve antenna structure in the junction of feeder line and antenna oscillator 1,
Due to the addition of metal sleeve 3, a virtual distributing point is formd in the upper end of metal sleeve 3, therefore, metal sleeve 3 will
The feed point of antenna oscillator 1 improves, and the electric current at virtual feed point only has minor change.Therefore, the input resistance of sleeve antenna structure
Resist and keeps approximate constant at least one octave.
Metallic ground box 5 is in hollow square box shape, meets the general structure of hand held antenna.Above-mentioned sleeve antenna structure is embedded
On the side wall of leptoprosopy, that is, metallic ground box 5 of metallic ground box 5, and metal sleeve 3 is connect with metallic ground box 5.It considers
The leptoprosopy of metallic ground box 5 is generally relatively narrow, and the tubulose radius of metal sleeve 3 generally require it is larger.When the tubulose of metal sleeve 3
When radius is more than the leptoprosopy width of metallic ground box 5, if metal sleeve 3 is still whole tubular structure, it cannot achieve completely.
At this time, it may be necessary to output the incomplete tubular structure of the section of 2 axial directions, i.e. metal sleeve 3 in the front and rear sides of metal sleeve 3
The tubulose surrounded by two circular arc-shaped metal pieces, section is not complete round and is analogous to bracket.
In order to realize the connection of antenna body and external feed, it is embedded on the metallic ground box 5 and connects with coaxial cable
The outer layer metal of the sub-miniature A connector 6 connect, sub-miniature A connector 6 is connect with metallic ground box 5, and the inner core of sub-miniature A connector 6 is via a lumped parameter
Inductance 4 is connect with antenna oscillator 1.Lumped parameter inductance 4 is loaded cable made of thick copper lines coiling, lumped parameter inductance 4
One end is connect with antenna oscillator 1, and the other end of lumped parameter inductance 4 is connect with the inner core of sub-miniature A connector 6.Loaded cable be in order to
The capacitive reactance part for offsetting electronically small antenna, to obtain better bandwidth characteristic.
In preferred embodiment of the present invention：Antenna Operation frequency range selects copper to make in 400MHz~678MHz, ladder-like antenna oscillator 1
For material, makes stepped form and be equivalent to top load, can effectively expand bandwidth and some is improved to antenna gain
Effect.Wherein r1=2.5mm, h1=50mm, r2=3mm, h2=60mm, r3=7mm, h3=20mm, r4=9mm, h4=
10mm has been blocked apart from the interval for h=10mm in 1 bottom part of antenna oscillator for being added in inductance.Antenna oscillator 1 is inserted in
Polytetrafluoroethylene (PTFE) has for material in the cylinder of section, and both sides of the polytetrafluoroethylene (PTFE) without section cover metal layer as metallic sheath
Cylinder 3 is acted on antenna oscillator 1, constitutes sleeve antenna structure.Wherein, the cylindric polytetrafluoroethylene (PTFE) radius in section is 12mm, height
For 50mm, both sides metal layer linear width is 16mm, and one section of long h=10mm is opened in polytetrafluoroethylene (PTFE) lower end, and wide s=5mm's is logical
Hole for use in inductance load.It is the pact using blister copper painting envelope curve wound into spring shape for loading lumped parameter inductance 4
5nH, one end are welded on the bottom of antenna oscillator 1, and the other end is welded on the inner core of the coaxial line stretched out from earth plate.It is coaxial at this time
The outer core of line, which is transferred to, to be fixedly welded on copper sheet on earth plate, and the coaxial line other end is antenna feeding interface.Metallic ground box 5
Size is 20mm*150mm*200mm, meets general hand held antenna earth plate.
A kind of open sleeve antenna that the present invention designs is ensureing the excellent VSWR of antenna itself, is expanding band
It is wide and play the role of to antenna gain a part of, i.e., reach high-performance in working band.This open sleeve antenna structure letter
It is single, easy to process, the features such as size is suitable, bandwidth.
The principle of the present invention, characteristic, function and associated advantages are described above, the relevant parameter provided is to be preferably implemented
Scheme, it is pointed out that：For the related personnel in the industry, without departing from the principle of the present invention, institute into
Capable improvement also should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of open sleeve antenna, including antenna body, it is characterised in that：The antenna body is hand held antenna, packet
Include antenna oscillator (1), dielectric (2), metal sleeve (3), lumped parameter inductance (4), metallic ground box (5) and sub-miniature A connector
(6)；
Antenna oscillator (1) is columnar metallic rod；Antenna oscillator (1) is in gradual change stepped cylindrical, i.e., along the axis of antenna oscillator (1)
Line direction is divided into 3 sections or more, and each section of radius of antenna oscillator (1) is all different, and is in segmented gradual change；
Metal sleeve (3) is tubular-shaped open formula sleeve up and down, and 2 axial directions are outputed in the front and rear sides of metal sleeve (3)
The incomplete tubular structure of section；Metal sleeve (3) is centered around the outside of antenna body, and the central axes of metal sleeve (3)
It is overlapped with the central axes of antenna oscillator (1)；It is filled between the lateral wall and the madial wall of metal sleeve (3) of antenna oscillator (1)
Antenna oscillator (1) and metal sleeve (3) are fixed together by dielectric (2), the dielectric (2), form sleeve antenna knot
Structure；
Metallic ground box (5) is in hollow square box shape；Above-mentioned sleeve antenna structure is embedded the leptoprosopy i.e. gold in metallic ground box (5)
On the side wall for belonging to ground connection box (5), and metal sleeve (3) is connect with metallic ground box (5)；
Sub-miniature A connector (6) is equally embedded on metallic ground box (5), and the outer layer metal of sub-miniature A connector (6) and metallic ground box (5)
Connection, the inner core of sub-miniature A connector (6) connect via lumped parameter inductance (4) with antenna oscillator (1), i.e. lumped parameter inductance (4)
One end is connect with antenna oscillator (1), and the other end of lumped parameter inductance (4) is connect with the inner core of sub-miniature A connector (6).
2. a kind of open sleeve antenna according to claim 1, it is characterised in that：Antenna oscillator (1) connects close to metal
The radius of ground box (5) one end is less than radius of the antenna oscillator (1) far from metallic ground box (5) one end.
3. a kind of open sleeve antenna according to claim 1, it is characterised in that：Metal sleeve (3) is looped around antenna
1/3 to 1/2 place of the lower height of ontology.
4. a kind of open sleeve antenna according to claim 1, it is characterised in that：Metal sleeve (3) is by two circles
The halfpipe that arc metal plate is surrounded.
5. a kind of open sleeve antenna according to claim 1, it is characterised in that：Dielectric (2) is polytetrafluoroethyl-ne
Alkene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135658.2A CN105633541B (en) | 2016-03-10 | 2016-03-10 | A kind of open sleeve antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135658.2A CN105633541B (en) | 2016-03-10 | 2016-03-10 | A kind of open sleeve antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105633541A CN105633541A (en) | 2016-06-01 |
| CN105633541B true CN105633541B (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610135658.2A Active CN105633541B (en) | 2016-03-10 | 2016-03-10 | A kind of open sleeve antenna |
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| CN (1) | CN105633541B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099316A (en) * | 2016-06-24 | 2016-11-09 | 芜湖辉灿电子科技有限公司 | Multifunctinal antiradiation mobile phone antenna |
| CN106025505A (en) * | 2016-06-24 | 2016-10-12 | 芜湖辉灿电子科技有限公司 | Mobile phone antenna with signal reinforcing function |
| CN106207390A (en) * | 2016-07-29 | 2016-12-07 | 芜湖辉灿电子科技有限公司 | Radioprotective formula antenna |
| CN106229621A (en) * | 2016-08-24 | 2016-12-14 | 芜湖辉灿电子科技有限公司 | A kind of detachable Antiradiation mobile phone antenna |
| CN107946726A (en) * | 2017-10-20 | 2018-04-20 | 芜湖辉灿电子科技有限公司 | A kind of antenna for mobile phone |
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| CN201845070U (en) * | 2010-11-18 | 2011-05-25 | 山东电力集团公司泰安供电公司 | Internal discharge monitoring sensor of power distribution network electric equipment |
| CN102522633A (en) * | 2012-01-17 | 2012-06-27 | 桂林电子科技大学 | Ultra wide band miniature fractal antenna |
| CN204720553U (en) * | 2015-06-03 | 2015-10-21 | 常州柯特瓦电子有限公司 | A kind of plane sleeve antenna with lightning protection function |
| CN205488457U (en) * | 2016-03-10 | 2016-08-17 | 桂林电子科技大学 | Open sleeve antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW518802B (en) * | 2001-10-03 | 2003-01-21 | Accton Technology Corp | Broadband circularly polarized panel antenna |
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2016
- 2016-03-10 CN CN201610135658.2A patent/CN105633541B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201845070U (en) * | 2010-11-18 | 2011-05-25 | 山东电力集团公司泰安供电公司 | Internal discharge monitoring sensor of power distribution network electric equipment |
| CN102522633A (en) * | 2012-01-17 | 2012-06-27 | 桂林电子科技大学 | Ultra wide band miniature fractal antenna |
| CN204720553U (en) * | 2015-06-03 | 2015-10-21 | 常州柯特瓦电子有限公司 | A kind of plane sleeve antenna with lightning protection function |
| CN205488457U (en) * | 2016-03-10 | 2016-08-17 | 桂林电子科技大学 | Open sleeve antenna |
Non-Patent Citations (1)
| Title |
|---|
| "A Novel Wideband Sleeve Antenna with Capacitive Annulus for Wireless Communication Applications";Yang Li等;《Progress In Electromagnetics Research C》;20140702;第52卷;第2页第1段-第5页第2段，图1（a）、1（b） * |
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| CN105633541A (en) | 2016-06-01 |
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