CN210628509U - GNSS antenna and GNSS receiver - Google Patents
GNSS antenna and GNSS receiver Download PDFInfo
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- CN210628509U CN210628509U CN201921313059.0U CN201921313059U CN210628509U CN 210628509 U CN210628509 U CN 210628509U CN 201921313059 U CN201921313059 U CN 201921313059U CN 210628509 U CN210628509 U CN 210628509U
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Abstract
The embodiment of the utility model provides a GNSS antenna and GNSS receiver, the GNSS antenna includes: the first radio frequency circuit is used for receiving a first signal and outputting a first output signal; the second radio frequency circuit is used for receiving the second signal and outputting a second output signal; and the combiner is connected with the first radio frequency circuit and the second radio frequency circuit and is used for combining a first output signal output by the first radio frequency circuit and a second output signal output by the second radio frequency circuit. The utility model discloses can improve the interference killing feature of GNSS antenna and GNSS receiver.
Description
Technical Field
The utility model relates to the field of communication, especially, relate to a GNSS receiver.
Background
GNSS (Global Navigation Satellite System) generally refers to all Satellite Navigation systems including Global, regional, and augmentation systems, such as GPS in the united states, Glonass in russia, beidou Satellite Navigation System in china, and the like, and related augmentation systems.
In the existing GNSS antenna product, in order to improve the accuracy and reliability of measurement, a filter, a low-noise amplifier, an amplifier combiner and the like are integrated, and the structure is simple. However, in the GNSS antenna in the prior art, a plurality of receivers may be included, but after receiving a plurality of signals, the signals still need to be combined and then processed, and if there is strong signal interference, the gain of the final amplifier after combining is saturated, and the signals received by other radio frequency channels are interfered, so that the noise of the GNSS antenna becomes large, the performance of the receiving system is reduced, and the lock may be lost in a severe case.
The problem of performance degradation of GNSS antennas caused by interference cannot be solved in the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a GNSS antenna can solve the problem that the GNSS antenna performance that the interference caused descends.
In a first aspect, the present invention provides a GNSS antenna, comprising:
the first radio frequency circuit is used for receiving a first signal and outputting a first output signal;
the second radio frequency circuit is used for receiving the second signal and outputting a second output signal;
and the combiner is connected with the first radio frequency circuit and the second radio frequency circuit and is used for combining a first output signal output by the first radio frequency circuit and a second output signal output by the second radio frequency circuit.
In an embodiment of the present invention, the first rf circuit includes:
a first filter for first filtering the first signal;
the first amplifier is used for carrying out first amplification on the first signal after the first filtering;
the second filter is used for carrying out second filtering on the first signal after the first amplification;
and the second amplifier is used for carrying out second amplification on the first signal subjected to the second filtering to obtain the first output signal.
In an embodiment of the present invention, the second rf circuit includes:
a third filter for first filtering the second signal;
the third amplifier is used for carrying out first amplification on the first filtered second signal;
the fourth filter is used for carrying out secondary filtering on the second signal after the first amplification;
and the fourth amplifier is used for carrying out second amplification on the second signal subjected to the second filtering to obtain the second output signal.
In the embodiment of the utility model, the combiner with first radio frequency circuit and second radio frequency circuit link to each other, include:
the combiner is connected with the second amplifier of the first radio frequency circuit, and the combiner is also connected with the fourth amplifier of the second radio frequency circuit.
In the embodiment of the present invention, the second amplifier and the fourth amplifier are high linearity driving amplifiers.
In a second aspect, a GNSS receiver is provided, including a GNSS antenna, the GNSS antenna including:
the first radio frequency circuit is used for receiving a first signal and outputting a first output signal;
the second radio frequency circuit is used for receiving the second signal and outputting a second output signal;
and the combiner is connected with the first radio frequency circuit and the second radio frequency circuit and is used for combining a first output signal output by the first radio frequency circuit and a second output signal output by the second radio frequency circuit.
In an embodiment of the present invention, the first rf circuit includes:
a first filter for first filtering the first signal;
the first amplifier is used for carrying out first amplification on the first signal after the first filtering;
the second filter is used for carrying out second filtering on the first signal after the first amplification;
and the second amplifier is used for carrying out second amplification on the first signal subjected to the second filtering to obtain the first output signal.
In an embodiment of the present invention, the second rf circuit includes:
a third filter for first filtering the second signal;
the third amplifier is used for carrying out first amplification on the first filtered second signal;
the fourth filter is used for carrying out secondary filtering on the second signal after the first amplification;
and the fourth amplifier is used for carrying out second amplification on the second signal subjected to the second filtering to obtain the second output signal.
In the embodiment of the utility model, the combiner with first radio frequency circuit and second radio frequency circuit link to each other, include:
the combiner is connected with the second amplifier of the first radio frequency circuit, and the combiner is also connected with the fourth amplifier of the second radio frequency circuit.
In the embodiment of the present invention, the second amplifier and the fourth amplifier are high linearity driving amplifiers.
The embodiment of the utility model provides an above-mentioned technical scheme compares with prior art has following advantage:
the embodiment of the utility model provides a GNSS antenna, the GNSS antenna includes first radio frequency circuit and second radio frequency circuit, and wherein first radio frequency circuit and second radio frequency circuit can mutually independent work, and when any radio frequency circuit received the interference, did not influence another way radio frequency circuit's normal work consequently improves the interference killing feature of GNSS antenna.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic diagram of a GNSS antenna according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a GNSS antenna according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic diagram of a GNSS antenna according to an embodiment of the present invention, the GNSS antenna includes:
a first rf circuit 110, configured to receive a first signal and output a first output signal;
a second rf circuit 120, configured to receive the second signal and output a second output signal;
a combiner 130, connected to the first rf circuit 110 and the second rf circuit, for combining a first output signal output by the first rf circuit and a second output signal output by the second rf circuit.
In an embodiment of the present invention, the first signal and the second signal may be the same signal or may be different signals.
In the embodiment of the present invention, for a specific application environment, the first rf circuit 110 and the second rf circuit 120 may be circuits with the same structure, or may be circuits with different structures, or may be circuits with similar or same structures but different device parameters. The first rf circuit 110 and the second rf circuit 120 are adjusted according to different application environments, so as to reduce the influence of interference.
The embodiment of the utility model provides an in, first radio frequency circuit and second radio frequency circuit can mutually independent work, and when any radio frequency circuit received the interference, do not influence another way radio frequency circuit's normal work to reduce the influence of interference to the signal of final output, improve the interference killing feature of GNSS antenna.
Fig. 2 is a schematic diagram of a GNSS antenna according to an embodiment of the present invention, as shown in fig. 2, the first rf circuit 110 includes:
a first filter 211 for performing a first filtering on the first signal;
a first amplifier 212 for performing a first amplification on the first filtered first signal;
a second filter 213, configured to perform second filtering on the first signal after the first amplification;
and a second amplifier 214, configured to perform second amplification on the second filtered first signal, so as to obtain the first output signal.
In an embodiment of the present invention, the second rf circuit 120 includes:
a third filter 221 for performing a first filtering on the second signal;
a third amplifier 222, configured to perform a first amplification on the first filtered second signal;
a fourth filter 223, configured to perform second filtering on the second signal after the first amplification;
a fourth amplifier 224, configured to perform second amplification on the second filtered second signal, so as to obtain the second output signal.
In the embodiment of the present invention, the combiner 130 is connected to the first rf circuit 110 and the second rf circuit 120, including:
the combiner 130 is connected to the second amplifier 214 of the first rf circuit 110, and the combiner is further connected to the fourth amplifier 224 of the second rf circuit 120.
In the embodiment of the present invention, the second amplifier 214 and the fourth amplifier 224 are high linearity driving amplifiers.
The embodiment of the utility model provides an in, first radio frequency circuit 110 and second radio frequency circuit 120 can all do independent processing to the signal that receives, and two way radio frequency circuit mutual independence, if arbitrary way radio frequency circuit receives the interference, only this radio frequency circuit's last level amplifier is probably saturated too, and another way radio frequency circuit can not disturbed because this radio frequency circuit is disturbed, another way radio frequency circuit's last level amplifier can not be saturated, thereby the influence of interference to the signal of final output has been reduced, improve the anti-jamming ability of GNSS antenna.
For example, the first rf circuit 110 is severely interfered, which results in saturation of the second amplifier 214, but the second rf circuit 120 and the first rf circuit 110 are independent from each other, the second rf circuit 120 is not interfered, and the fourth amplifier 224 is not saturated, so that the final combined signal includes the interfered first output signal output by the first rf circuit 110, but the signal output by the second rf circuit 120 is not interfered, and the signal output by the GNSS antenna is less interfered.
The embodiment of the utility model provides a GNSS receiver is still provided, including the GNSS antenna, the GNSS antenna includes:
the first radio frequency circuit is used for receiving a first signal and outputting a first output signal;
the second radio frequency circuit is used for receiving the second signal and outputting a second output signal;
and the combiner is connected with the first radio frequency circuit and the second radio frequency circuit and is used for combining a first output signal output by the first radio frequency circuit and a second output signal output by the second radio frequency circuit.
In an embodiment of the present invention, the first rf circuit includes:
a first filter for first filtering the first signal;
the first amplifier is used for carrying out first amplification on the first signal after the first filtering;
the second filter is used for carrying out second filtering on the first signal after the first amplification;
and the second amplifier is used for carrying out second amplification on the first signal subjected to the second filtering to obtain the first output signal.
In an embodiment of the present invention, the second rf circuit includes:
a third filter for first filtering the second signal;
the third amplifier is used for carrying out first amplification on the first filtered second signal;
the fourth filter is used for carrying out secondary filtering on the second signal after the first amplification;
and the fourth amplifier is used for carrying out second amplification on the second signal subjected to the second filtering to obtain the second output signal.
In the embodiment of the utility model, the combiner with first radio frequency circuit and second radio frequency circuit link to each other, include:
the combiner is connected with the second amplifier of the first radio frequency circuit, and the combiner is also connected with the fourth amplifier of the second radio frequency circuit.
In the embodiment of the present invention, the second amplifier and the fourth amplifier are high linearity driving amplifiers.
The utility model discloses a GNSS receiver can also include other functional unit, for example computer, treater, detection circuitry, protection circuit, supply circuit etc. no longer gives unnecessary details here.
The utility model discloses among the GNSS receiver, independent processing can all be done to received signal to first radio frequency circuit and second radio frequency circuit, and two way radio frequency circuit mutual independence, wherein any radio frequency circuit of the same kind receives the interference, and only this radio frequency circuit's last level amplifier is possible to saturate yet, and another way radio frequency circuit can not disturbed because this radio frequency circuit is disturbed to reduce the influence of interference to the signal of final output, improve GNSS receiver's interference killing feature.
The utility model provides a GNSS antenna and GNSS receiver, the GNSS antenna includes first radio frequency circuit and second radio frequency circuit, and wherein first radio frequency circuit and second radio frequency circuit can mutually independent work, and when any radio frequency circuit received the interference, did not influence another way radio frequency circuit's normal work to reduce the influence of interference to the signal of final output, improved the interference killing feature of GNSS antenna. The GNSS receiver comprises the GNSS antenna, so that the influence of interference is reduced, and the anti-interference capability of the GNSS receiver is improved.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A GNSS antenna, comprising:
the first radio frequency circuit is used for receiving a first signal and outputting a first output signal;
the second radio frequency circuit is used for receiving the second signal and outputting a second output signal;
and the combiner is connected with the first radio frequency circuit and the second radio frequency circuit and is used for combining a first output signal output by the first radio frequency circuit and a second output signal output by the second radio frequency circuit.
2. The GNSS antenna of claim 1 wherein the first radio frequency circuit comprises:
a first filter for first filtering the first signal;
the first amplifier is used for carrying out first amplification on the first signal after the first filtering;
the second filter is used for carrying out second filtering on the first signal after the first amplification;
and the second amplifier is used for carrying out second amplification on the first signal subjected to the second filtering to obtain the first output signal.
3. The GNSS antenna of claim 2 wherein the second radio frequency circuit comprises:
a third filter for first filtering the second signal;
the third amplifier is used for carrying out first amplification on the first filtered second signal;
the fourth filter is used for carrying out secondary filtering on the second signal after the first amplification;
and the fourth amplifier is used for carrying out second amplification on the second signal subjected to the second filtering to obtain the second output signal.
4. The GNSS antenna of claim 3 wherein the combiner, coupled to the first and second radio frequency circuits, comprises:
the combiner is connected with the second amplifier of the first radio frequency circuit, and the combiner is also connected with the fourth amplifier of the second radio frequency circuit.
5. The GNSS antenna of claim 4 wherein the second and fourth amplifiers are high linearity drive amplifiers.
6. A GNSS receiver comprising a GNSS antenna, the GNSS antenna comprising:
the first radio frequency circuit is used for receiving a first signal and outputting a first output signal;
the second radio frequency circuit is used for receiving the second signal and outputting a second output signal;
and the combiner is connected with the first radio frequency circuit and the second radio frequency circuit and is used for combining a first output signal output by the first radio frequency circuit and a second output signal output by the second radio frequency circuit.
7. The GNSS receiver of claim 6 wherein the first radio frequency circuit comprises:
a first filter for first filtering the first signal;
the first amplifier is used for carrying out first amplification on the first signal after the first filtering;
the second filter is used for carrying out second filtering on the first signal after the first amplification;
and the second amplifier is used for carrying out second amplification on the first signal subjected to the second filtering to obtain the first output signal.
8. The GNSS receiver of claim 7 wherein the second radio frequency circuit comprises:
a third filter for first filtering the second signal;
the third amplifier is used for carrying out first amplification on the first filtered second signal;
the fourth filter is used for carrying out secondary filtering on the second signal after the first amplification;
and the fourth amplifier is used for carrying out second amplification on the second signal subjected to the second filtering to obtain the second output signal.
9. The GNSS receiver of claim 8 wherein the combiner, coupled to the first and second radio frequency circuits, comprises:
the combiner is connected with the second amplifier of the first radio frequency circuit, and the combiner is also connected with the fourth amplifier of the second radio frequency circuit.
10. The GNSS receiver of claim 9 wherein the second and fourth amplifiers are high linearity drive amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921313059.0U CN210628509U (en) | 2019-08-12 | 2019-08-12 | GNSS antenna and GNSS receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921313059.0U CN210628509U (en) | 2019-08-12 | 2019-08-12 | GNSS antenna and GNSS receiver |
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| Publication Number | Publication Date |
|---|---|
| CN210628509U true CN210628509U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921313059.0U Expired - Fee Related CN210628509U (en) | 2019-08-12 | 2019-08-12 | GNSS antenna and GNSS receiver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230184889A1 (en) * | 2021-12-14 | 2023-06-15 | Infineon Technologies Ag | Receiver down-converter architecture including an hybrid coupler, a quadrature down-converter and a baseband signal linear combiner |
-
2019
- 2019-08-12 CN CN201921313059.0U patent/CN210628509U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230184889A1 (en) * | 2021-12-14 | 2023-06-15 | Infineon Technologies Ag | Receiver down-converter architecture including an hybrid coupler, a quadrature down-converter and a baseband signal linear combiner |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |