CN205081212U - Novel four arm helical antenna - Google Patents
Novel four arm helical antenna Download PDFInfo
- Publication number
- CN205081212U CN205081212U CN201520818384.8U CN201520818384U CN205081212U CN 205081212 U CN205081212 U CN 205081212U CN 201520818384 U CN201520818384 U CN 201520818384U CN 205081212 U CN205081212 U CN 205081212U
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- novel
- spiral antenna
- arm spiral
- diapire
- installing hole
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Abstract
The utility model provides a novel four arm helical antenna, includes: the medium body, the appearance profile is cylindricly, a cavity and an installation department during this medium body has one, and four cantilevers, evenly distributed ground sets up the cylindrical surface at this medium body. The utility model discloses can improve antenna gain to make things convenient for antenna setting.
Description
Technical field
The utility model relates to high frequency signals equipment, particularly relevant with the transmission of radio frequency, millimeter-wave signal.
Background technology
Four-arm spiral antenna has good circular polarization characteristics, is applicable to the antenna of navigation system.See Fig. 1, existing four-arm spiral antenna 10 comprises: a dielectric 1, and it is solid construction, and appearance profile is cylindric; Article four, cantilever 2, is arranged on the periphery of this dielectric 1 evenly distributedly.This antenna structure, not only because the loss of medium can make antenna gain slightly decline: at center frequency points 1.26GHz, gain is 1.05dB, and solid medium is not easy to install.
Summary of the invention
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, proposes a kind of novel four-arm spiral antenna, can improve antenna gain, and convenient antenna is installed.
The utility model solves the technical scheme that its technical problem adopts and comprises: provide a kind of novel four-arm spiral antenna, comprising: a dielectric, appearance profile is cylindric, and this dielectric has a cavity and an installation portion; And four cantilevers, be arranged on the periphery of this dielectric evenly distributedly.
In certain embodiments, this dielectric has a cylindric sidewall and is arranged on the diapire of bottom of this sidewall, and this diapire and this sidewall enclose out the described cavity of upper opening, and described installation portion is arranged on this diapire.
In certain embodiments, this installation portion is arranged on the multiple installing holes on this diapire with comprising up/down perforation.
In certain embodiments, these installing holes comprise one first installing hole being positioned at these diapire central authorities and at least one second installing hole being interval in this first installing hole.
In certain embodiments, this first mounting hole site is in the home position of this diapire; The number of the second installing hole is two, and these two second mounting hole site are circumferentially same in what be the center of circle with this first installing hole, and 180 degree, interval.
In certain embodiments, the aperture of this first installing hole is greater than the aperture of this at least one second installing hole.
In certain embodiments, the thickness of this sidewall is not less than 1 millimeter.
In certain embodiments, the thickness of this diapire is not less than 1 millimeter.
In certain embodiments, this dielectric is ceramic material, and these cantilevers are the metal tapes being arranged on this media face.
Compared with prior art, novel four-arm spiral antenna of the present utility model, by arranging a cavity dexterously on dielectric, can improve antenna gain; By arranging an installation portion on dielectric, can install by convenient antenna.
Accompanying drawing explanation
Fig. 1 is the stereochemical structure signal of existing four-arm spiral antenna.
Fig. 2 is the stereochemical structure signal of novel four-arm spiral antenna of the present utility model.
Fig. 3 is the sectional structure signal of novel four-arm spiral antenna of the present utility model.
Fig. 4 is the plan structure signal of novel four-arm spiral antenna of the present utility model.
Fig. 5 is the structural representation of the circuit board connected with novel four-arm spiral antenna of the present utility model.
Wherein, description of reference numerals is as follows: 10 four-arm spiral antennas, novel four-arm spiral antenna 1 dielectric 2 cantilever 11 sidewall 12 diapire 16 installation portion 161 first installing hole 162 second installing hole 19 cavity 20 circuit board 201 first fixing hole 202 second fixing hole.
Embodiment
In order to describe structure of the present utility model and feature place in detail, hereby lifting following preferred embodiment and coordinating accompanying drawing to be described as follows.
See Fig. 2 to Fig. 5, Fig. 2 is the stereochemical structure signal of novel four-arm spiral antenna of the present utility model.Fig. 3 is the sectional structure signal of novel four-arm spiral antenna of the present utility model.Fig. 4 is the plan structure signal of novel four-arm spiral antenna of the present utility model.Fig. 5 is the structural representation of the circuit board connected with novel four-arm spiral antenna of the present utility model.The utility model proposes a kind of novel four-arm spiral antenna 10, comprising: a dielectric 1, appearance profile is cylindric, and it has cavity 19 and an installation portion 16; And four cantilevers 2, be arranged on the periphery of this dielectric 1 evenly distributedly.In the present embodiment, this dielectric 1 is ceramic material, and these cantilevers 2 are the metal tapes being arranged on this dielectric 1 surface.This novel four-arm spiral antenna 10 can fixedly be attached on a circuit board 20.
This dielectric 1 has a cylindric sidewall 11 and is arranged on the diapire 12 of bottom of this sidewall 11.This diapire 12 and this sidewall 11 enclose out the cavity 19 of upper opening.This installation portion 16 is arranged on this diapire 12.In the present embodiment, the thickness of this sidewall 11 is not less than 1 millimeter.The thickness of this diapire 12 is not less than 1 millimeter.
This installation portion 16 is arranged on the multiple installing holes 161,162 on this diapire with comprising up/down perforation.Specifically, one first installing hole 161 being positioned at these diapire 12 central authorities and two the second installing holes 162 being interval in this first installing hole 161 are comprised.This first installing hole 161 is positioned at the home position of this diapire 12.These two the second installing holes 162 are positioned at this first installing hole 1611, and to be the center of circle circumferentially same, and 180 degree, interval.Preferably, the aperture of this first installing hole 161 is greater than the aperture of this second installing hole 162.Wherein, the first installing hole 161 is for fixing, and the second installing hole 162 rotates for preventing novel four-arm spiral antenna 10 opposing circuit board 20.Preferably, circuit board 20 is provided with first fixing hole 201 corresponding with the first installing hole 161 and two second fixing holes 202 corresponding with the second installing hole 162.These two the second fixing holes 202 are positioned at this first fixing hole 201, and to be the center of circle circumferentially same, and 90 degree, interval.This structure, stably can be fixed on novel four-arm spiral antenna 10 on circuit board 20.
Compared with prior art, novel four-arm spiral antenna 10 of the present utility model, by arranging a cavity 19 dexterously on dielectric 1, can improve antenna gain: at center frequency points 1.26GHz, gain is 1.43dB, improves about 0.4dB; By arranging an installation portion 16 on dielectric 1, can install by convenient antenna.
Above, be only the preferred embodiment of the utility model, be intended to further illustrate the utility model, but not it is limited.All simple replacements carried out according to the content disclosed in above-mentioned word and accompanying drawing, all at the row of the rights protection scope of this patent.
Claims (9)
1. a novel four-arm spiral antenna, is characterized in that, comprising: a dielectric, and appearance profile is cylindric, and this dielectric has a cavity and an installation portion; And four cantilevers, be arranged on the periphery of this dielectric evenly distributedly.
2. novel four-arm spiral antenna according to claim 1, it is characterized in that: this dielectric has a cylindric sidewall and is arranged on the diapire of bottom of this sidewall, this diapire and this sidewall enclose out the described cavity of upper opening, and described installation portion is arranged on this diapire.
3. novel four-arm spiral antenna according to claim 2, is characterized in that: this installation portion is arranged on the multiple installing holes on this diapire with comprising up/down perforation.
4. novel four-arm spiral antenna according to claim 3, is characterized in that: these installing holes comprise one first installing hole being positioned at these diapire central authorities and at least one second installing hole being interval in this first installing hole.
5. novel four-arm spiral antenna according to claim 4, is characterized in that: this first mounting hole site is in the home position of this diapire; The number of the second installing hole is two, and these two second mounting hole site are circumferentially same in what be the center of circle with this first installing hole, and 180 degree, interval.
6. novel four-arm spiral antenna according to claim 4, is characterized in that: the aperture of this first installing hole is greater than the aperture of this at least one second installing hole.
7. novel four-arm spiral antenna according to claim 2, is characterized in that: the thickness of this sidewall is not less than 1 millimeter.
8. novel four-arm spiral antenna according to claim 2, is characterized in that: the thickness of this diapire is not less than 1 millimeter.
9. the novel four-arm spiral antenna according to any one of claim 1 to 8, is characterized in that: this dielectric is ceramic material, and these cantilevers are the metal tapes being arranged on this media face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818384.8U CN205081212U (en) | 2015-10-22 | 2015-10-22 | Novel four arm helical antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818384.8U CN205081212U (en) | 2015-10-22 | 2015-10-22 | Novel four arm helical antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205081212U true CN205081212U (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520818384.8U Active CN205081212U (en) | 2015-10-22 | 2015-10-22 | Novel four arm helical antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN205081212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244631A (en) * | 2018-10-25 | 2019-01-18 | 苏州博海创业微系统有限公司 | Minimize anti high overload linear polarization single-screw antenna |
-
2015
- 2015-10-22 CN CN201520818384.8U patent/CN205081212U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244631A (en) * | 2018-10-25 | 2019-01-18 | 苏州博海创业微系统有限公司 | Minimize anti high overload linear polarization single-screw antenna |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |