CN203277647U - High isolation dual-frequency navigation antenna - Google Patents
High isolation dual-frequency navigation antenna Download PDFInfo
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- CN203277647U CN203277647U CN 201320230098 CN201320230098U CN203277647U CN 203277647 U CN203277647 U CN 203277647U CN 201320230098 CN201320230098 CN 201320230098 CN 201320230098 U CN201320230098 U CN 201320230098U CN 203277647 U CN203277647 U CN 203277647U
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Abstract
The utility model relates to a high isolation dual-frequency navigation antenna. The navigation antenna comprises a cavity and a high frequency antenna radiator and a low frequency antenna radiator which are coaxially stacked on the cavity, wherein the low frequency antenna radiator comprises an upper medium plate and a lower medium plate, a low frequency radiation patch is printed on the upper medium plate, a couple micro strip is printed on the lower medium plate, center ground metal holes are formed in the centers of the upper medium plate and the lower medium plate; a low frequency probe is led out from the lower medium plate; the high frequency antenna radiator comprises a high frequency medium, a high frequency radiation patch and a high frequency floor which are respectively printed on the upper surface and the lower surface of the high frequency medium; a high frequency medium leading-out center feed probe passes through the high frequency medium, the high frequency floor and the center ground metal hole. The antenna radiators with different frequencies are coaxially stacked, the zero potential position in the center of the low frequency radiation patch of the low frequency antenna radiator is fully utilized and the isolation of the antenna is improved, so that the antenna meets the radiation characteristics required by a satellite navigation system.
Description
Technical field
The utility model relates to a kind of high performance antenna of the field application such as radio communication navigation, specifically, relates to a kind of antenna that has high-isolation and adopt the double frequency technology.
Background technology
The miniaturization navigation antenna is the focus of each satellite navigation aerial of Abroad in Recent Years manufacturer research, is the main trend of satellite navigation receiver development by the multimode multi-frequency GNSS receiver of its equipment.Following receivable satellite navigation constellation is more and more, comprises GPS, the Big Dipper, GLONASS, Galileo.The available number of satellite of multimode multi-frequency satellite navigation receiver is multiplied, and can guarantee that the user reliablely and stablely receives satellite-signal, even in the situation that abominable continuity, availability and the integrity that also can guarantee navigator fix of reception environment.
Antenna is one of upper indispensable visual plant of modern weapons equipment.Antenna is the vitals of wireless system, and it is electronic eyes, the electronic ear of advanced information society, is mainly radiation or the device that receives radio wave.In the area navigation application system, antenna is positioned at foremost, and the quality of antenna performance directly affects navigation and positioning accuracy.Multiple antenna form can be used as navigation antenna, and wherein the micro-strip paster antenna advantage is apparent in view, and micro-strip paster antenna has low profile, be easy to batch production, be easy to the characteristics such as active device is integrated, is widely used in satellite navigation and wireless communication field.
Satellite navigation system for China, not only there is the frequency range of reception to also have transmit frequency band, therefore require antenna to have higher receive-transmit isolation, require simultaneously the circular polarization mode to work, and require to have hemispheric directional diagram, namely require to have the gain at the higher low elevation angle, also require to have simultaneously miniaturization and dual-band characteristic.Therefore need to be a kind of when realizing the antenna dual frequency characteristics, realize the antenna of the high-isolation characteristic of two frequency ranges.
Summary of the invention
The purpose of this utility model be to provide a kind of solution two frequency ranges the poor problem of receive-transmit isolation, satisfy the high-isolation dual-frequency navigation antenna of the radiation characteristic of satellite navigation system needs.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of high-isolation dual-frequency navigation antenna, it comprises cavity, high band antenna radiator and low-frequency range antenna radiator, described high band antenna radiator and described low-frequency range antenna radiator are coaxial to be stacked and is arranged on described cavity;
Be installed with high frequency connectors and low-frequency connector on described cavity;
Described low-frequency range antenna radiator is fixedly connected on described cavity, it comprises and is stacked top dielectric plate and the layer dielectric plate of establishing, the upper surface of described top dielectric plate is printed with the low frequency radiation paster coaxial with it, described layer dielectric plate is fixedly arranged on described cavity, and the upper surface of described layer dielectric plate is printed with coupled microstrip line, lower surface and is printed with the low frequency floor; The center of described top dielectric plate and described layer dielectric plate offers the centre-point earth plated-through hole of perforation; Described layer dielectric plate is drawn the low frequency probe that is connected with described coupled microstrip line, and described low frequency probe passes described layer dielectric plate and is connected with described low-frequency connector;
Described high band antenna radiator is fixedly arranged on described low frequency radiation paster, it comprises high-frequency dielectric, make described high band antenna radiator have high frequency radiation paster, the high frequency floor of apex drive characteristic, described high frequency radiation paster and described high frequency floor are printed in respectively the upper and lower surface of described high-frequency dielectric and coaxial with described high-frequency dielectric, and described high frequency floor is connected with described low frequency radiation paster; Described high-frequency dielectric is drawn the apex drive probe that is connected with described high frequency radiation paster, and described apex drive probe passes the centre-point earth plated-through hole of described high-frequency dielectric, described high frequency floor and described low-frequency range antenna radiator and is connected with described high frequency connectors.
Preferably, described high band antenna radiator and described low-frequency range antenna radiator are welded to connect; Described low-frequency range antenna radiator is connected by screw with described cavity.
Preferably, described high-frequency dielectric is for being that the thickness that 6.15 dielectric material is made is the layer structure of 3mm by dielectric constant; Described top dielectric plate is for being that the thickness that 6.15 dielectric material is made is the layer structure of 3mm by dielectric constant, and described layer dielectric plate is for being that the thickness that 2.65 dielectric material is made is the layer structure of 2mm by dielectric constant.
Preferably, the area of described high band antenna radiator is less than the area of described low-frequency range antenna radiator.
Because technique scheme is used, the utility model compared with prior art has following advantages: the utility model adopts the antenna radiator of coaxial two frequency ranges that stack, and take full advantage of the zero potential position at the low frequency radiation paster center of low-frequency range antenna radiator, improved the isolation of two band antennas, make this antenna can satisfy the required radiation characteristic of satellite navigation system, can be as the high performance Anneta module of satellite navigation.
Description of drawings
Accompanying drawing 1 is the overall structure cross-sectional schematic of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 2 is the overall structure schematic top plan view of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 3 is the structure schematic top plan view of top dielectric plate of the low-frequency range antenna radiator of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 4 is the structure cross-sectional schematic of top dielectric plate of the low-frequency range antenna radiator of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 5 is the structure schematic top plan view of layer dielectric plate of the low-frequency range antenna radiator of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 6 is the structure cross-sectional schematic of layer dielectric plate of the low-frequency range antenna radiator of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 7 is the structure cross-sectional schematic of the high band antenna radiator of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 8 is the structure schematic top plan view of the high band antenna radiator of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 9 is the gain pattern of low-frequency range of the emulation of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 10 is the gain pattern of high band of the emulation of high-isolation dual-frequency navigation antenna of the present utility model.
Accompanying drawing 11 is the isolation curve chart of the emulation of high-isolation dual-frequency navigation antenna of the present utility model.
In above accompanying drawing: 1, high band antenna radiator; 11, high-frequency dielectric; 12, high frequency radiation paster; 13, high frequency floor; 14, apex drive probe;
2, low-frequency range antenna radiator; 21, top dielectric plate; 22, layer dielectric plate; 23, low frequency radiation paster; 24, coupled microstrip line; 25, centre-point earth plated-through hole; 26, low frequency probe; 27, low frequency floor;
3, cavity; 4, screw.
Embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is further described, the following stated " on ", D score all refer in accompanying drawing " on ", the D score direction.
Embodiment one: shown in accompanying drawing 1 and accompanying drawing 2.A kind of high-isolation dual-frequency navigation antenna, it comprises cavity 3, high band antenna radiator 1 and low-frequency range antenna radiator 2, high band antenna radiator 1 and low-frequency range antenna radiator 2 are coaxial to be stacked and is arranged on cavity 3.Wherein, high band antenna radiator 1 is welded to connect with low-frequency range antenna radiator 2, and the area of high band antenna radiator 1 is less than the area of low-frequency range antenna radiator 2.And low-frequency range antenna radiator 2 is connected by screw 4 with cavity 3, and is installed with high frequency connectors and low-frequency connector on cavity 3.The antenna radiator of two frequency ranges adopts the coaxial mode that stacks to combine, and can guarantee the radiance of the antenna of two frequency ranges.
Low-frequency range antenna radiator 2 is fixedly connected on cavity 3, and it comprises and is stacked top dielectric plate 21 and the layer dielectric plate 22 of establishing.To shown in accompanying drawing 4, top dielectric plate 21 is for being that the thickness that 6.15 dielectric material is made is the layer structure of 3mm by dielectric constant referring to accompanying drawing 3, and the upper surface of top dielectric plate 21 is printed with the low frequency radiation paster 23 coaxial with it.Referring to accompanying drawing 5 to shown in accompanying drawing 6, layer dielectric plate 22 is for being that the thickness that 2.65 dielectric material is made is the layer structure of 2mm by dielectric constant, layer dielectric plate 22 is fixedly arranged on cavity 3, and its upper surface is printed with coupled microstrip line 24, lower surface and is printed with low frequency floor 27, and low frequency floor 27 contacts with cavity.The center of top dielectric plate 21 and layer dielectric plate 22 offers the centre-point earth plated-through hole 25 of perforation.Layer dielectric plate 22 is drawn the low frequency probe 26 that is connected with coupled microstrip line 24, and low frequency probe 26 passes layer dielectric plate 22 and is connected with low-frequency connector.Adopt higher top dielectric plate 21 and the lower layer dielectric plate 22 of dielectric constant of dielectric constant, can utilize the Characteristic of Surface Wave of the material of high-k to improve the low elevation angle radiation characteristic of antenna, can utilize again the material broadening antenna bandwidth of operation of low-k.
Referring to accompanying drawing 7 to shown in accompanying drawing 8, high band antenna radiator 1 is fixedly arranged on low frequency radiation paster 23, it comprises high-frequency dielectric 11, make high band antenna radiator 1 have high frequency radiation paster 12, the high frequency floor 13 of the special shape of apex drive characteristic, high frequency radiation paster 12 and high frequency floor 13 are printed in respectively the upper and lower surface of high-frequency dielectric 11 and coaxial with high-frequency dielectric 11, and high frequency floor 13 is connected with low frequency radiation paster 23.Feed circular polarization microstrip antenna centered by this high band antenna radiator 1.High-frequency dielectric 11 is for being that the thickness that 6.15 dielectric material is made is the layer structure of 3mm by dielectric constant.High-frequency dielectric 11 is drawn the apex drive probe 14 that is connected with high frequency radiation paster 12, and apex drive probe 14 passes the centre-point earth plated-through hole 25 of high-frequency dielectric 11, high frequency floor 13 and low-frequency range antenna radiator 2 and is connected with high frequency connectors, can utilize like this characteristic of the center zero potential of low-frequency range antenna radiator 2 to improve the isolation of two frequency ranges.From saving cost and debugging angle consideration easily, it is little that high band antenna radiator 1 is done as far as possible, and place on the low frequency radiation paster 23 of low-frequency range antenna radiator 2, and weld by scolding tin.
For improving and the good radiation characteristic of assurance dual-band antenna, the utility model has adopted the two coaxial schemes that stack of frequency range radiant body, after the antenna radiator that its purpose is to solve two frequency ranges is stacked together, the poor problem of the receive-transmit isolation of two frequency ranges, a kind of high performance high-isolation dual-frequency navigation antenna is proposed, satisfy the radiation characteristic of satellite navigation system needs, for satellite navigation user equipment provides the high performance antenna module, can be used for the satellite navigation ground application system subscriber computer equipment of miniaturization or vehicular etc.
What satellite navigation aerial adopted is the circular polarization working method, and what the utility model adopted is microstrip antenna, and microstrip antenna has the implementation of multiple circular polarization, as: single feedback corner cut square patch mode, duplex feeding mode, many feeding classifications etc.
For realizing that dual frequency characteristics the utility model proposes the two coaxial schemes that stack of frequency range radiant body, high band antenna radiator 1 is placed on low-frequency range antenna radiator 2, the high frequency floor of the low frequency radiation paster 23 of low-frequency range antenna radiator 2 being used as high band antenna radiator 1, high band antenna radiator 1 directly are welded on the low frequency radiation paster 23 of low-frequency range antenna radiator 2.The utility model has adopted the circular polarization working method of single feedback, and high band antenna radiator 1 utilizes the high frequency radiation paster 12 of special shape, and the feed placement that makes paster is heart position therein, and low-frequency range antenna radiator 2 adopts coupling feed ways.
Referring to as shown in Fig. 9 and accompanying drawing 10, can find out that antenna of the present utility model has good radiation characteristic and low elevation angle characteristic.Shown in accompanying drawing 11, two-port of the present utility model has higher isolation.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow person skilled in the art scholar can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (4)
1. high-isolation dual-frequency navigation antenna, it is characterized in that: it comprises cavity, high band antenna radiator and low-frequency range antenna radiator, and described high band antenna radiator and described low-frequency range antenna radiator are coaxial to be stacked and be arranged on described cavity;
Be installed with high frequency connectors and low-frequency connector on described cavity;
Described low-frequency range antenna radiator is fixedly connected on described cavity, it comprises and is stacked top dielectric plate and the layer dielectric plate of establishing, the upper surface of described top dielectric plate is printed with the low frequency radiation paster coaxial with it, described layer dielectric plate is fixedly arranged on described cavity, and the upper surface of described layer dielectric plate is printed with coupled microstrip line, lower surface and is printed with the low frequency floor; The center of described top dielectric plate and described layer dielectric plate offers the centre-point earth plated-through hole of perforation; Described layer dielectric plate is drawn the low frequency probe that is connected with described coupled microstrip line, and described low frequency probe passes described layer dielectric plate and is connected with described low-frequency connector;
Described high band antenna radiator is fixedly arranged on described low frequency radiation paster, it comprises high-frequency dielectric, make described high band antenna radiator have high frequency radiation paster, the high frequency floor of apex drive characteristic, described high frequency radiation paster and described high frequency floor are printed in respectively the upper and lower surface of described high-frequency dielectric and coaxial with described high-frequency dielectric, and described high frequency floor is connected with described low frequency radiation paster; Described high-frequency dielectric is drawn the apex drive probe that is connected with described high frequency radiation paster, and described apex drive probe passes the centre-point earth plated-through hole of described high-frequency dielectric, described high frequency floor and described low-frequency range antenna radiator and is connected with described high frequency connectors.
2. high-isolation dual-frequency navigation antenna according to claim 1, it is characterized in that: described high band antenna radiator and described low-frequency range antenna radiator are welded to connect; Described low-frequency range antenna radiator is connected by screw with described cavity.
3. high-isolation dual-frequency navigation antenna according to claim 1 is characterized in that: described high-frequency dielectric is for being that the thickness that 6.15 dielectric material is made is the layer structure of 3mm by dielectric constant; Described top dielectric plate is for being that the thickness that 6.15 dielectric material is made is the layer structure of 3mm by dielectric constant, and described layer dielectric plate is for being that the thickness that 2.65 dielectric material is made is the layer structure of 2mm by dielectric constant.
4. high-isolation dual-frequency navigation antenna according to claim 1, it is characterized in that: the area of described high band antenna radiator is less than the area of described low-frequency range antenna radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320230098 CN203277647U (en) | 2013-05-02 | 2013-05-02 | High isolation dual-frequency navigation antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320230098 CN203277647U (en) | 2013-05-02 | 2013-05-02 | High isolation dual-frequency navigation antenna |
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| Publication Number | Publication Date |
|---|---|
| CN203277647U true CN203277647U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320230098 Expired - Fee Related CN203277647U (en) | 2013-05-02 | 2013-05-02 | High isolation dual-frequency navigation antenna |
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| CN (1) | CN203277647U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258424A (en) * | 2018-01-10 | 2018-07-06 | 上海安费诺永亿通讯电子有限公司 | A kind of mobile terminal antenna and its feeding network |
| CN112993552A (en) * | 2021-02-10 | 2021-06-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Dual-frequency phase-stabilizing conformal Beidou satellite antenna |
| CN114709605A (en) * | 2022-03-21 | 2022-07-05 | 西安电子科技大学 | Dual-frequency dual-port antenna with high isolation characteristic and mobile terminal |
-
2013
- 2013-05-02 CN CN 201320230098 patent/CN203277647U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258424A (en) * | 2018-01-10 | 2018-07-06 | 上海安费诺永亿通讯电子有限公司 | A kind of mobile terminal antenna and its feeding network |
| CN112993552A (en) * | 2021-02-10 | 2021-06-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Dual-frequency phase-stabilizing conformal Beidou satellite antenna |
| CN114709605A (en) * | 2022-03-21 | 2022-07-05 | 西安电子科技大学 | Dual-frequency dual-port antenna with high isolation characteristic and mobile terminal |
| CN114709605B (en) * | 2022-03-21 | 2023-07-25 | 西安电子科技大学 | Dual-frequency dual-port antenna with high isolation characteristic and mobile terminal |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20200502 |
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| CF01 | Termination of patent right due to non-payment of annual fee |