CN204216221U - 2.8GHz prints four-arm spiral antenna - Google Patents
2.8GHz prints four-arm spiral antenna Download PDFInfo
- Publication number
- CN204216221U CN204216221U CN201420777926.7U CN201420777926U CN204216221U CN 204216221 U CN204216221 U CN 204216221U CN 201420777926 U CN201420777926 U CN 201420777926U CN 204216221 U CN204216221 U CN 204216221U
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- China
- Prior art keywords
- arm spiral
- radiating element
- prints
- medium cylinder
- spiral antenna
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Abstract
The utility model discloses a kind of 2.8GHz and print four-arm spiral antenna, comprise phase shift feeding network, helical antenna radiating element and medium cylinder, described helical antenna radiating element is printed on printed board substrate, described printed board substrate is rolled into medium cylinder around axis, and the inside of described medium cylinder is provided with dielectric cylinder; Described phase shift feeding network is provided with four ports, and each port is connected with every arms of helical antenna radiating element respectively.The utility model can possess low standing-wave ratio, wide beamwidth, and antenna polarization purity can be made to be significantly improved.
Description
Technical field
The utility model relates to a kind of antenna, particularly relates to a kind of 2.8GHz and prints four-arm spiral antenna.
Background technology
Resonant mode printing four-arm spiral antenna has the characteristics such as the broad beam of hemisphere covering, excellent wide-angle circular polarization, cheap cost and excellent impedance matching, in the armament systems such as the satellite communication systems such as GPS (Global Position System), INMARSAT system, unmanned plane and guided missile, printing four-arm spiral antenna becomes conventional patch antenna and the strong substitute of cross dipole antenna; The space characteristics parameter of helical antenna structure has three: helical length, pitch and diameter.Traditional coiling four-arm spiral antenna is entwined by wire usually, and three parameter indexs are comparatively difficult to ensure card machining accuracy.By comparison, printing four-arm spiral antenna adopts printed board processing technology, and machining accuracy is high, and has advantage that is lightweight, higher-dimension good stability.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is, provides a kind of 2.8GHz to print four-arm spiral antenna, can possess low standing-wave ratio, wide beamwidth, and antenna polarization purity can be made to be significantly improved.
The technical solution of the utility model is: a kind of 2.8GHz prints four-arm spiral antenna, it is characterized in that, comprise phase shift feeding network, helical antenna radiating element and medium cylinder, described helical antenna radiating element is printed on printed board substrate, described printed board substrate is rolled into medium cylinder around axis, and the inside of described medium cylinder is provided with dielectric cylinder; Described phase shift feeding network is provided with four ports, and each port is connected with every arms of helical antenna radiating element respectively.
Aforesaid 2.8GHz prints four-arm spiral antenna, and it is characterized in that, described medium cylinder is flexible microwave thin dielectric film.
Aforesaid 2.8GHz prints four-arm spiral antenna, and it is characterized in that, the material of described medium cylinder is polytetrafluoroethylene.
Aforesaid 2.8GHz prints four-arm spiral antenna, and it is characterized in that, the inside on described dielectric cylinder top is hollow-core construction.
The beneficial effect that the utility model reaches:
1) owing to adopting printed circuit technology, therefore its rate of finished products is higher, and debugging is simple, good reliability;
2) polarization purity is higher, and being particularly useful for needs transceiver insulation occasion;
3) there is more excellent hemisphere and cover even circular polarization wave beam;
4) novel phase shift feeding network, has the advantages such as compact conformation, broadband, standing-wave ratio be low.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is antenna printed board substrate plane schematic diagram in the utility model;
Fig. 3 is phase shift feed network structures schematic diagram.
Reference numerals list:
1-strip line, 2-printed board substrate, 3-phase shift feeding network substrate, 4-dielectric cylinder.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model with this.
As shown in Figure 1, a kind of 2.8GHz prints four-arm spiral antenna, comprise phase shift feeding network, helical antenna radiating element and medium cylinder, the strip line 1 of described helical antenna radiating element is printed on printed board substrate 2, described printed board substrate 2 is rolled into medium cylinder around axis, and the inside of described medium cylinder is provided with dielectric cylinder 4; Described phase shift feeding network is provided with four ports, and the phase shift feeding network substrate 3 of each port is connected with every arms of helical antenna radiating element respectively.
Fig. 2 is the flat deployable structure of helical antenna radiating element, the strip line 1 of helical antenna radiating element is printed on (the RT5880 substrate that the design adopts ROGERS CORPORATION of the U.S. to produce on printed board substrate 2, thickness 0.127mm, a kind of microwave dielectric film with higher flexibility), then column construction is rolled into around an axis, in the cylindrical structure spooled, placing a dielectric cylinder 4, being out of shape when being subject to unexpected External Force Acting to prevent four-arm spiral antenna.
Medium cylinder adopts polytetrafluoroethylmaterial material, and its dielectric constant is close with antenna substrate, and the performance index of antenna are more stable, reliable.Dielectric cylinder 4 top is carried out inside and is emptied process, can significantly reduce entire physical weight, is especially applicable to occasion weight being had to rigors.
For the feed of four-arm spiral antenna, need the feed side at four printing spirals, there is the signal input that amplitude equal phase is orthogonal.Two kinds of modes can be had to realize 90 ° of phase shifts, and one is by adopting feeding network to realize, mainly adopting directional coupler or T-shaped power divider; Another adopts to realize from phase-shift structure, is exactly to adjust a long bifilar helix with the phase shift producing+45 °, adjusts a short other two-wire with the phase shift producing-45 °.
Owing to getting up difficulty comparatively greatly from phase-shift structure for the accurate control realization of phase place, the utility model adopts a kind of feeding network of compact conformation, as shown in Figure 3.Wherein, port0 is the outside input port of antenna, and port one ~ port 4 is respectively four spiral arm and provides constant amplitude, differs the balanced feeding being followed successively by 90 °.The energy that port0 inputs by this feeding network is pressing 1:3 distribution through first order power splitter, then pressing 1:2 distribution through the second level, pressing 1:1 decile through the second level, obtaining the feed of constant power distribution like this from port one ~ port 4.
Adopt the 2.8GHz four-arm spiral antenna of technique scheme, there is the feature of small size, low standing-wave ratio, broad beam covering, excellent wide-angle circular polarization, its low cost of manufacture simultaneously, and be easy to processing and debugging.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection range of the present utility model.
Claims (4)
1. a 2.8GHz prints four-arm spiral antenna, it is characterized in that, comprise phase shift feeding network, helical antenna radiating element and medium cylinder, described helical antenna radiating element is printed on printed board substrate, described printed board substrate is rolled into medium cylinder around axis, and the inside of described medium cylinder is provided with dielectric cylinder; Described phase shift feeding network is provided with four ports, and each port is connected with every arms of helical antenna radiating element respectively.
2. 2.8GHz according to claim 1 prints four-arm spiral antenna, and it is characterized in that, described medium cylinder is flexible microwave thin dielectric film.
3. 2.8GHz according to claim 1 prints four-arm spiral antenna, and it is characterized in that, the material of described medium cylinder is polytetrafluoroethylene.
4. 2.8GHz according to claim 1 prints four-arm spiral antenna, and it is characterized in that, the inside on described dielectric cylinder top is hollow-core construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777926.7U CN204216221U (en) | 2014-12-10 | 2014-12-10 | 2.8GHz prints four-arm spiral antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777926.7U CN204216221U (en) | 2014-12-10 | 2014-12-10 | 2.8GHz prints four-arm spiral antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216221U true CN204216221U (en) | 2015-03-18 |
Family
ID=52984865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420777926.7U Expired - Fee Related CN204216221U (en) | 2014-12-10 | 2014-12-10 | 2.8GHz prints four-arm spiral antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216221U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882667A (en) * | 2015-04-27 | 2015-09-02 | 北京理工大学 | Multilayer quadrifilar helix antenna system |
| CN105244606A (en) * | 2015-11-11 | 2016-01-13 | 上海海积信息科技股份有限公司 | Quadrifilar helix antenna |
| CN105514582A (en) * | 2015-12-10 | 2016-04-20 | 上海海积信息科技股份有限公司 | Four-arm spiral antenna |
| CN105552546A (en) * | 2016-01-29 | 2016-05-04 | 惠州硕贝德无线科技股份有限公司 | Small-sized big dipper antenna |
| CN106532230A (en) * | 2016-12-30 | 2017-03-22 | 广州中海达卫星导航技术股份有限公司 | Helical antenna for unmanned aerial vehicle |
| CN110828971A (en) * | 2019-10-18 | 2020-02-21 | 江苏三和欣创通信科技有限公司 | Adjustable stacked multi-arm dual-frequency helical antenna device |
-
2014
- 2014-12-10 CN CN201420777926.7U patent/CN204216221U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882667A (en) * | 2015-04-27 | 2015-09-02 | 北京理工大学 | Multilayer quadrifilar helix antenna system |
| CN105244606A (en) * | 2015-11-11 | 2016-01-13 | 上海海积信息科技股份有限公司 | Quadrifilar helix antenna |
| CN105514582A (en) * | 2015-12-10 | 2016-04-20 | 上海海积信息科技股份有限公司 | Four-arm spiral antenna |
| CN105552546A (en) * | 2016-01-29 | 2016-05-04 | 惠州硕贝德无线科技股份有限公司 | Small-sized big dipper antenna |
| CN106532230A (en) * | 2016-12-30 | 2017-03-22 | 广州中海达卫星导航技术股份有限公司 | Helical antenna for unmanned aerial vehicle |
| CN110828971A (en) * | 2019-10-18 | 2020-02-21 | 江苏三和欣创通信科技有限公司 | Adjustable stacked multi-arm dual-frequency helical antenna device |
| CN110828971B (en) * | 2019-10-18 | 2021-02-26 | 江苏三和欣创通信科技有限公司 | Adjustable stacked multi-arm dual-frequency helical antenna device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20191210 |