Antenna integrated GNSS transponder

Abstract

The utility model relates to the technical field of satellite communication, in particular to an antenna integrated GNSS transponder which comprises a signal receiving end, a biasing circuit, an amplifying circuit, a filter circuit and a signal transmitting end, the signal receiving end is used for receiving external GNSS signals, the biasing circuit is connected with the signal receiving end so as to be used for transmitting the external GNSS signals, and the amplifying circuit is connected with the signal transmitting end. The input end of the amplifying circuit is connected with the output end of the biasing circuit so as to be used for amplifying external GNSS signals, the input end of the filtering circuit is connected with the output end of the amplifying circuit so as to be used for filtering the amplified GNSS signals, and the signal transmitting end is connected with the output end of the filtering circuit so as to be used for transmitting the signals to the signal receiving end. The GNSS receiver is used for acquiring a filtered GNSS signal and transmitting the filtered GNSS signal outwards; according to the scheme, the external GNSS signal is amplified and introduced into a room, so that higher signal quality and better anti-interference performance are provided, the indoor navigation intensity is enhanced, and the indoor navigation positioning accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of satellite communication technology, and in particular to an integrated antenna GNSS transponder. Background Technology

[0002] Indoor transmitting antennas play an important role in wireless communication systems and are widely used for wireless signal coverage within buildings. However, since passive transmitting antennas directly receive satellite signals and do not have signal amplification capabilities, the signal strength is relatively weak. In addition, their processing of weak signals is not sensitive enough, resulting in poor performance in situations where the signal is weak or there is significant environmental interference.

[0003] Therefore, it is essential for those skilled in the art to design an integrated antenna GNSS transponder that can increase signal strength and enhance anti-interference capabilities in order to provide better signal coverage and communication quality for indoor communications. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide an integrated antenna GNSS transponder that can increase signal strength and has strong anti-interference ability, so as to solve the problems of weak signal and poor performance in the prior art.

[0005] This utility model discloses an integrated antenna GNSS transponder, which includes: a signal receiving end, a bias circuit, an amplification circuit, a filtering circuit, and a signal transmitting end. The signal receiving end is used to receive external GNSS signals. The bias circuit is connected to the signal receiving end for transmitting external GNSS signals and providing voltage output to the signal receiving end. The input end of the amplification circuit is connected to the output end of the bias circuit for amplifying external GNSS signals. The input end of the filtering circuit is connected to the output end of the amplification circuit for filtering the amplified GNSS signals. The signal transmitting end is connected to the output end of the filtering circuit for acquiring the filtered GNSS signals and transmitting them outward.

[0006] Optionally, the signal transmitting end is a ceramic antenna.

[0007] Optionally, the ceramic antenna is a 4-feed ceramic antenna.

[0008] Optionally, the bias circuit includes an inductor and a capacitor, the inductor being connected to an external power supply and the signal receiving terminal, and the capacitor being connected to the signal receiving terminal and the amplification circuit.

[0009] Optionally, the output voltage of the bias circuit is 5V.

[0010] Optionally, the filtering circuit includes multiple filters connected in parallel.

[0011] Optionally, the filtering frequency ranges of the multiple filters are all different.

[0012] Optionally, all of the filters described herein are dielectric filters.

[0013] Optionally, the amplification circuit includes multiple cascaded LNA amplifiers.

[0014] Optionally, the signal receiver is impedance matched to 50 ohms.

[0015] Compared with the prior art, the beneficial effects of the integrated antenna GNSS transponder provided by this utility model embodiment are as follows: By designing an integrated antenna GNSS transponder, including a signal receiver, a bias circuit, an amplifier circuit, a filter circuit, and a signal transmitter, the signal receiver receives external GNSS signals. The bias circuit is connected to the signal receiver for transmitting external GNSS signals and providing voltage output to the signal receiver. The input of the amplifier circuit is connected to the output of the bias circuit for amplifying the external GNSS signals. The input of the filter circuit is connected to the output of the amplifier circuit for filtering the amplified GNSS signals. The signal transmitter is connected to the output of the filter circuit for acquiring the filtered GNSS signals and transmitting them outward. This solution enables the introduction of GNSS signals indoors, providing not only higher signal quality and better anti-interference performance, but also enhanced signal strength and improved indoor positioning accuracy. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is the system block diagram of the antenna-integrated GNSS transponder provided in this embodiment of the utility model. Figure 1 ;

[0018] Figure 2 This is the system block diagram of the antenna-integrated GNSS transponder provided in this embodiment of the utility model. Figure 2 .

[0019] The labels for the attached figures are as follows:

[0020] 100, Signal receiver; 200, Bias circuit; 300, Amplifier circuit; 400, Filter circuit; 500, Signal transmitter; L1, Inductor; C1, Capacitor; 310, LNA amplifier; 410, Filter. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, this utility model provides a specific embodiment of an integrated antenna GNSS transponder.

[0023] An antenna-integrated GNSS transponder, reference Figure 1 The integrated antenna GNSS transponder includes a signal receiver 100, a bias circuit 200, an amplifier circuit 300, a filter circuit 400, and a signal transmitter 500. The signal receiver 100 is used to receive external GNSS signals. The voltage input terminal of the bias circuit 200 is connected to an external power supply to obtain a 5V voltage. The voltage output terminal of the bias circuit 200 is connected to the signal receiver 100 to provide a 5V reverse voltage output to the signal receiver 100, which can power the front-end equipment. The signal input terminal of the bias circuit 200 is connected to the signal output terminal of the signal receiver 100 to transmit the external GNSS signals received by the signal receiver 100.

[0024] Furthermore, the signal input terminal of the amplifier circuit 300 is connected to the signal output terminal of the bias circuit 200 to amplify the external GNSS signal transmitted by the bias circuit 200; the signal input terminal of the filter circuit 400 is connected to the signal output terminal of the amplifier circuit 300 to filter the amplified GNSS signal; and the signal input terminal of the signal transmitter 500 is connected to the signal output terminal of the filter circuit 400 to receive the amplified and filtered GNSS signal and transmit the amplified and filtered GNSS signal outward to provide wireless signals indoors.

[0025] Currently, indoor transmitting antennas play an important role in wireless communication systems and are widely used for wireless signal coverage within buildings. However, since passive transmitting antennas directly receive satellite signals without signal amplification, the signal strength is relatively weak. In addition, their processing of weak signals is not sensitive enough, resulting in poor performance in situations with weak signals or significant environmental interference. Furthermore, additional amplifiers are required for upgrades, which not only increases the cost of indoor transmitting antennas but also makes their maintenance more complex.

[0026] In this embodiment, an integrated antenna GNSS transponder is designed, including a signal receiver 100, a bias circuit 200, an amplifier circuit 300, a filter circuit 400, and a signal transmitter 500. The signal receiver 100 receives external GNSS signals. The bias circuit 200 is connected to the signal receiver 100 for transmitting external GNSS signals and providing voltage output to the signal receiver 100. The input of the amplifier circuit 300 is connected to the output of the bias circuit 200 to amplify the external GNSS signals. The input of the filter circuit 400 is connected to the output of the amplifier circuit 300 to filter the amplified GNSS signals. The signal transmitter 500 is connected to the output of the filter circuit 400 to acquire the filtered GNSS signals and transmit them outwards. This solution introduces GNSS signals indoors, providing not only higher signal quality and better anti-interference performance but also enhanced signal strength and improved indoor positioning accuracy.

[0027] In one embodiment, the signal transmitter 500 is a ceramic antenna; a ceramic antenna is a passive transmitting antenna that uses the electrical insulation properties of ceramic materials to reflect and project electromagnetic waves by setting specific geometric shapes and electrode distribution, thereby realizing the transmission of GNSS signals. Ceramic antennas also have the advantages of miniaturization, high performance and low cost.

[0028] In one embodiment, the ceramic antenna is a 4-feed ceramic antenna. Multi-feed antennas can increase the antenna bandwidth without compromising the antenna's radiation characteristics. In other words, multi-feed design can extend the antenna's operating frequency band to accommodate more frequency bands. Furthermore, multi-feed antennas can optimize antenna performance, thereby achieving higher gain and improving signal transmission distance and quality.

[0029] In one embodiment, reference Figure 1 and Figure 2 The bias circuit 200 consists of an inductor L1 and a capacitor C1, which is used to provide a 5V voltage to the signal receiver 100 and can also supply power to the device connected to the signal receiver 100 in reverse. One end of the inductor L1 is connected to an external power supply to obtain a 5V voltage, and the other end of the inductor L1 is connected to the signal receiver 100 to transmit the 5V voltage to the signal receiver 100 to achieve 5V power supply. One end of the capacitor C1 is connected to the signal receiver 100, and the other end of the capacitor C1 is connected to the amplifier circuit 300 to transmit the external GNSS signal received by the signal receiver 100 to the amplifier circuit 300.

[0030] By employing an active antenna, energy loss from coaxial cable connections can be further reduced, resulting in higher frequency stability, better matching resistance, and a wider frequency band.

[0031] In one embodiment, reference Figure 1 and Figure 2 The filter circuit 400 includes multiple filters 410 connected in parallel, and each filter 410 has a different filtering frequency range, so that each filter 410 can focus on processing a specific frequency range. This not only reduces interference from out-of-band signals or noise, but also reduces interference between different frequency bands, thereby enabling more precise frequency analysis and processing.

[0032] Among them, reference Figure 2 In this embodiment, four parallel filters 410 are used. All four filters 410 are dielectric filters. The dielectric filters 410 utilize ceramic materials with high dielectric constant to form a total reflection standing wave oscillation. Filtering is achieved through the coupling between resonators to achieve high Q value, low insertion loss and high temperature resistance.

[0033] In one embodiment, reference Figure 1 and Figure 2 The amplifier circuit 300 includes multiple cascaded LNA amplifiers 310, reference Figure 2 In this embodiment, three LNA amplifiers 310 are used. The three LNA amplifiers 310 are cascaded to achieve an amplification gain of 40dB in the link, so that the received GNSS signal can be amplified and output at high power.

[0034] In one embodiment, the signal receiver 100 uses 50-ohm impedance matching, that is, the load impedance, the impedance of the signal receiver 100 and the transmission line impedance are all 50 ohms. Under this value, signal reflection can be effectively reduced and signal energy transmission can be more efficient to achieve maximum power transmission.

[0035] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A GNSS transponder with integrated antenna, characterized in that, include: The system includes a signal receiver, a bias circuit, an amplifier circuit, a filter circuit, and a signal transmitter. The signal receiver is used to receive external GNSS signals. The bias circuit is connected to the signal receiver for transmitting external GNSS signals and providing voltage output to the signal receiver. The input of the amplifier circuit is connected to the output of the bias circuit for amplifying the external GNSS signals. The input of the filter circuit is connected to the output of the amplifier circuit for filtering the amplified GNSS signals. The signal transmitter is connected to the output of the filter circuit for acquiring the filtered GNSS signals and transmitting them outward.

2. The antenna-integrated GNSS transponder according to claim 1, characterized in that, The signal transmitting end is a ceramic antenna.

3. The antenna-integrated GNSS transponder according to claim 2, characterized in that, The ceramic antenna is a 4-feed ceramic antenna.

4. The antenna-integrated GNSS transponder according to claim 1, characterized in that, The bias circuit includes an inductor and a capacitor. The inductor is connected to an external power supply and the signal receiving terminal, respectively, and the capacitor is connected to the signal receiving terminal and the amplification circuit, respectively.

5. The antenna-integrated GNSS transponder according to claim 1, characterized in that, The output voltage of the bias circuit is 5V.

6. The antenna-integrated GNSS transponder according to claim 1, characterized in that, The filtering circuit includes multiple filters connected in parallel.

7. The antenna-integrated GNSS transponder according to claim 6, characterized in that, The filtering frequency ranges of the multiple filters are all different.

8. The antenna-integrated GNSS transponder according to claim 6, characterized in that, All of the filters mentioned above are dielectric filters.

9. The antenna-integrated GNSS transponder according to claim 1, characterized in that, The amplifier circuit includes multiple cascaded LNA amplifiers.

10. The antenna-integrated GNSS transponder according to claim 1, characterized in that, The signal receiver uses 50-ohm impedance matching.

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