CN203260709U - Gnss antenna choke groove - Google Patents
Gnss antenna choke groove Download PDFInfo
- Publication number
- CN203260709U CN203260709U CN 201320220564 CN201320220564U CN203260709U CN 203260709 U CN203260709 U CN 203260709U CN 201320220564 CN201320220564 CN 201320220564 CN 201320220564 U CN201320220564 U CN 201320220564U CN 203260709 U CN203260709 U CN 203260709U
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- cannelures
- gnss antenna
- choke groove
- annular
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Abstract
The utility model discloses a GNSS antenna choke coil used for inhibiting interference signals outside a reflection chamber of a receiving antenna. The choke coil comprises a plurality of annular-shaped grooves, which are coaxially disposed on an outer periphery of the reflection chamber. Axle centers of the plurality of annular-shaped grooves are superposed with the axle center of the reflection chamber. A height of a bottom wall of a plurality of annular-shaped grooves is, from inside to outside, gradually reduced. The GNSS antenna choke groove is advantageous in that the plurality of annular-shaped grooves having the ladder height differential are disposed on the outer periphery of the reflection chamber, and therefore the receiving antenna can work in a wide working frequency band, the multi-path interference signal of the environment on the receiving antenna can be greatly inhibited, the anti-multi-path effect capability of the receiving antenna can be greatly improved.
Description
Technical field
The utility model relates to field of antenna, especially, relates to a kind of GNSS antenna choke groove.
Background technology
When the satellite direct signal runs into the complex environments such as skyscraper, large tracts of land lake in communication process, scattering and reflection can occur, the signal meeting of some scattering and reflection and direct signal be received machine antenna reception together, these scattering and reflected signals that enter receiver antenna are equivalent to the direct signal that propagation path prolongs, and are referred to as multipath signal.Multipath signal is compared with direct signal, and phase place lags behind, and amplitude may decay or strengthen.Multipath signal is mainly manifested in two aspects to the impact of receiver performance: cause that 1, carrier-to-noise ratio changes.Multipath signal and direct signal are in receiver internal condition amplitude and phase relation stack, and the superposed signal amplitude is determined by the phase relation of the two.2, range accuracy reduces, and multipath signal causes a yard relevant peaks distortion, reduces range accuracy.Therefore, multipath effect is the appreciable error source of satellite navigation system.
Because the multipath signal under the varying environment is generally uncorrelated, thereby to attempt by the technology of checking the mark be impossible with its elimination, it also is infeasible that each receiver antenna environment of living in is carried out modeling, can only adopt the multipaths restraint technology just can reduce the impact that multipath signal disturbs.At present, existing four arm spiral choke antennas are made complicated, and choke is on same plane, and working band is narrower, and the area occupied of antenna is also larger.
The utility model content
The utility model purpose is to provide a kind of GNSS antenna choke groove, the technical problem of disturbing to solve existing aerial receiver multipath signal.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of GNSS antenna choke groove, be used for the outer interference signal of the reflection cavity of reception antenna is suppressed, comprise the coaxial a plurality of cannelures that are positioned at the reflection cavity periphery, the axle center of a plurality of cannelures and the axis coinciding of reflection cavity, the height of the diapire of a plurality of cannelures diminishes from inside to outside gradually.
Further, the groove depth of a plurality of cannelures shoals from inside to outside gradually.
Further, each cannelure comprises that the diapire of annular reaches and the sidewall of diapire annular connected vertically, and between two adjacent annular grooves, the sidewall that is positioned at inboard cannelure links to each other with the diapire of the cannelure that is positioned at the outside.
Further, a plurality of cannelures structure that is formed in one.
Further, a plurality of cannelures and the reflection cavity structure that is formed in one.
The utlity model has following beneficial effect:
The utility model GNSS antenna choke groove, owing to have the poor a plurality of cannelures of ladder height peripheral employing of reflection cavity, so that reception antenna can be operated in wider working band, and greatly suppressed the multipath interference signal of surrounding environment to reception antenna, greatly improved the anti-multipath effect capability of reception antenna.
Further, the groove depth of a plurality of cannelures shoals from inside to outside gradually in the utility model GNSS antenna choke groove, has greatly dwindled the size of choke groove.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model GNSS antenna choke groove preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
With reference to Fig. 1, preferred embodiment of the present utility model provides a kind of GNSS antenna choke groove, be used for the reflection cavity 10 outer interference signals of reception antenna are suppressed, this GNSS antenna choke groove comprises the coaxial a plurality of cannelures 20 that are positioned at reflection cavity 10 peripheries, the axis coinciding of the axle center of a plurality of cannelures 20 and reflection cavity 10, each cannelure 20 comprises that the diapire 21 of annular reaches and the sidewall 22 of diapire 21 annulars connected vertically, between two adjacent annular grooves 20, the sidewall 22 that is positioned at inboard cannelure 20 links to each other with the diapire 21 of the cannelure 20 that is positioned at the outside.The height of the diapire 21 of a plurality of cannelures 20 diminishes from inside to outside gradually.Like this, it is poor to have formed ladder height between a plurality of cannelures 20, so that reception antenna can be operated in wider working band, and greatly suppressed the multipath interference signal of surrounding environment to reception antenna, greatly improve the anti-multipath effect capability of reception antenna, improved the purity that receives signal.
With reference to Fig. 1, in a preferred embodiment, GNSS antenna choke groove specifically comprises four groups of cannelures 20 that are positioned at reflection cavity 10 peripheries connected to one another, and the wall thickness of the sidewall 22 of each cannelure 20 is t, and the groove width of four groups of cannelures 20 is W1, W2, W3, W4 from inside to outside successively; The groove depth of four groups of cannelures 20 is h1, h2, h3, h4 from inside to outside successively; The groove face of four groups of cannelures 20 is poor to be S1, S2, S3, S4 from inside to outside successively.Preferably, the groove depth hl of four groups of cannelures 20～h4 like this, has dwindled the size of choke groove from depth to shallow greatly, has alleviated the weight of choke groove, so that choke groove size when suppressing the multipath interference signal is little, structure is light and handy.
Preferably, a plurality of cannelures 20 structure that is formed in one for example adopts cutting technology one-body molded.In order to make things convenient for processing and fabricating, in a preferred embodiment, a plurality of cannelures 20 and reflection cavity 10 structure that is formed in one had both been saved material, had improved again working (machining) efficiency.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. GNSS antenna choke groove, be used for the outer interference signal of the reflection cavity (10) of reception antenna is suppressed, it is characterized in that, comprise and be positioned at the peripheral coaxial a plurality of cannelures (20) of described reflection cavity (10), the axis coinciding of the axle center of a plurality of described cannelures (20) and described reflection cavity (10), the height of the diapire (21) of a plurality of described cannelures (20) diminishes from inside to outside gradually.
2. GNSS antenna choke groove according to claim 1 is characterized in that:
The groove depth of a plurality of described cannelures (20) shoals from inside to outside gradually.
3. GNSS antenna choke groove according to claim 1 is characterized in that:
Each described cannelure (20) comprises that the diapire (21) of annular reaches and the sidewall (22) of described diapire (21) annular connected vertically, between two adjacent described cannelures (20), the described sidewall (22) that is positioned at inboard described cannelure (20) links to each other with the described diapire (21) of the described cannelure (20) that is positioned at the outside.
4. GNSS antenna choke groove according to claim 3 is characterized in that:
A plurality of described cannelures (20) structure that is formed in one.
5. GNSS antenna choke groove according to claim 4 is characterized in that:
A plurality of described cannelures (20) and described reflection cavity (10) structure that is formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220564 CN203260709U (en) | 2013-04-26 | 2013-04-26 | Gnss antenna choke groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220564 CN203260709U (en) | 2013-04-26 | 2013-04-26 | Gnss antenna choke groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203260709U true CN203260709U (en) | 2013-10-30 |
Family
ID=49473249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320220564 Expired - Lifetime CN203260709U (en) | 2013-04-26 | 2013-04-26 | Gnss antenna choke groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203260709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058487A (en) * | 2016-07-01 | 2016-10-26 | 广东通宇通讯股份有限公司 | Antenna and antenna loading choke groove |
| CN112382847A (en) * | 2020-09-23 | 2021-02-19 | 上海航天电子有限公司 | Novel choke center feed dual-frequency circularly polarized GPS antenna |
-
2013
- 2013-04-26 CN CN 201320220564 patent/CN203260709U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058487A (en) * | 2016-07-01 | 2016-10-26 | 广东通宇通讯股份有限公司 | Antenna and antenna loading choke groove |
| CN112382847A (en) * | 2020-09-23 | 2021-02-19 | 上海航天电子有限公司 | Novel choke center feed dual-frequency circularly polarized GPS antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410205 No. 229 west slope road, Changsha, Hunan, Tongzi Patentee after: HUNAN SPACEFLIGHT HUANYU COMMUNICATION TECHNOLOGY CO.,LTD. Address before: 410205 No. 229 west slope road, Changsha, Hunan, Tongzi Patentee before: HUNAN SPACE HUANYU COMMUNICATION TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |
Address after: No.6 Xingkang South Road, Yuelu District, Changsha City, Hunan Province Patentee after: HUNAN SPACEFLIGHT HUANYU COMMUNICATION TECHNOLOGY Co.,Ltd. Address before: 410205 No. 229 west slope road, Changsha, Hunan, Tongzi Patentee before: HUNAN SPACEFLIGHT HUANYU COMMUNICATION TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
|
| CX01 | Expiry of patent term |