CN210954352U - GPS antenna assembly and system - Google Patents
GPS antenna assembly and system Download PDFInfo
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- CN210954352U CN210954352U CN201920778935.0U CN201920778935U CN210954352U CN 210954352 U CN210954352 U CN 210954352U CN 201920778935 U CN201920778935 U CN 201920778935U CN 210954352 U CN210954352 U CN 210954352U
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Abstract
The utility model relates to a GPS antenna module and system, the subassembly includes: the GPS antenna interface is connected with an external GPS antenna and used for acquiring satellite signals received by the GPS antenna; the switch module is connected with the GPS antenna interface, is used for repeatedly switching the passive line and the active line to transmit satellite signals, and is also used for selecting the passive line or the active line to transmit the satellite signals according to the line selection signal when receiving the line selection signal; the power supply module is connected with the GPS antenna interface and used for supplying power to the GPS antenna interface when the switch module transmits satellite signals by using an active line; and the processing module is connected with the switch module and used for receiving the satellite signals transmitted by the passive line and the active line and generating a line selection signal according to the signal intensity information of the received satellite signals. The assembly is suitable for both a GPS active antenna and a GPS passive antenna, and has the advantages of strong compatibility, stable and reliable working performance and wide application range.
Description
Technical Field
The utility model relates to a wireless communication technology field especially relates to a GPS antenna module and system.
Background
The current Global Positioning System (GPS) is widely applied in the field of wireless communication technology, especially in wireless modules applying antenna technology, wherein the GPS antenna includes an active GPS antenna and a passive GPS antenna, the active GPS antenna is internally provided with a low noise amplifier, which has amplification gain and high GPS sensitivity and requires a power supply to supply power; the passive GPS antenna has no amplification gain, slightly poor performance, no need of power supply and low price.
The current GPS antenna can only be suitable for one of a GPS active antenna or a GPS passive antenna, different antenna interface structures are required to be designed according to different use requirements, the compatibility is poor, the application range is limited, and the requirements of users cannot be met.
SUMMERY OF THE UTILITY MODEL
Therefore, the GPS antenna assembly and the system have to be provided to solve the problems of poor compatibility and limited application range of the GPS antenna assembly.
A GPS antenna assembly, the assembly comprising:
the GPS antenna interface is connected with an external GPS antenna and used for acquiring satellite signals received by the GPS antenna;
the switch module is connected with the GPS antenna interface, is used for repeatedly switching a passive line and an active line to transmit the satellite signals, and is also used for selecting the passive line or the active line to transmit the satellite signals according to the line selection signal when receiving the line selection signal;
the power supply module is connected with the GPS antenna interface and used for supplying power to the GPS antenna interface when the switch module utilizes the active line to transmit the satellite signal;
and the processing module is connected with the switch module and used for receiving the satellite signals transmitted by the passive line and the active line and generating the line selection signal according to the signal strength information of the received satellite signals.
In one embodiment, the processing module comprises:
a first acquisition unit configured to receive the satellite signal transmitted via the passive line a plurality of times, and acquire a first signal strength from a signal strength of the satellite signal transmitted via the passive line;
a second obtaining unit, configured to receive the satellite signal transmitted through the active line for multiple times, and obtain a second signal strength according to a signal strength of the satellite signal transmitted through the active line;
and the signal generating unit is respectively connected with the first acquiring unit and the second acquiring unit and is used for generating the line selection signal according to the first signal intensity and the second signal intensity.
In one embodiment, the processing module further comprises:
the constant setting unit is connected with the signal generating unit and is used for setting a sensitivity constant;
the signal generating unit is further configured to generate the line selection signal according to the first signal strength, the second signal strength, and the sensitivity constant.
In one embodiment, the signal generating unit is further configured to,
generating a passive line selection signal when the first signal strength is greater than a sum of the second signal strength and the sensitivity constant;
an active line select signal is generated when the first signal strength is less than the sum of strengths.
In one embodiment, the processing module is further configured to perform positioning processing according to the received satellite signal.
In one embodiment, the assembly further comprises: and the noise amplification module is arranged on the passive line, is respectively connected with the processing module and the switch module, and is used for amplifying the noise signal in the satellite signal transmitted through the passive line.
In one embodiment, the assembly further comprises: and the direct current blocking module is respectively connected with the switch module and the GPS antenna interface and is used for filtering direct current signals in the satellite signals acquired by the GPS antenna interface.
In one embodiment, the blocking module is a blocking capacitor.
In one embodiment, the switch module is a relay, a contactor, or a semiconductor switch.
A GPS antenna system comprising: a GPS antenna for receiving satellite signals; the GPS antenna assembly is used for acquiring satellite signals received by the GPS antenna; repeatedly switching a passive line and an active line to transmit the satellite signal, and supplying power to the GPS antenna when the active line is used for transmitting the satellite signal; generating the line selection signal according to signal strength information of the received satellite signal; and when a line selection signal is received, selecting the passive line or the active line according to the line selection signal to transmit the satellite signal.
Above-mentioned GPS antenna subassembly and system, the subassembly includes: the GPS antenna interface is connected with an external GPS antenna and used for acquiring satellite signals received by the GPS antenna; the switch module is connected with the GPS antenna interface, is used for repeatedly switching a passive line and an active line to transmit the satellite signals, and is also used for selecting the passive line or the active line to transmit the satellite signals according to the line selection signal when receiving the line selection signal; the power supply module is connected with the GPS antenna interface and used for supplying power to the GPS antenna interface when the switch module utilizes the active line to transmit the satellite signal; and the processing module is connected with the switch module and used for receiving the satellite signals transmitted by the passive line and the active line and generating the line selection signal according to the signal strength information of the received satellite signals. The assembly is suitable for both a GPS active antenna and a GPS passive antenna, and has the advantages of strong compatibility, stable and reliable working performance and wider application range.
Drawings
FIG. 1 is a schematic diagram of a GPS antenna assembly according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a processing module according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a GPS antenna assembly according to yet another embodiment of the present application;
fig. 4 is a schematic structural diagram of a GPS antenna system according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and in the accompanying drawings, preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The embodiment of the present application provides a GPS antenna assembly 10, which can be applied to an m.2/M2M motherboard, as shown in fig. 1, the assembly includes:
a GPS antenna interface 110 connected to an external GPS antenna, for acquiring a satellite signal received by the GPS antenna;
wherein the GPS antenna is used for receiving satellite signals. The GPS satellite signals are divided into L1 and L2 at frequencies of 1575.42MHz and 1228MHz, respectively. These characteristics determine that GPS antennas often use circular and linear polarizations. The GPS antenna interface refers to a pin or a port connected to the GPS antenna, and is compatible with the GPS antenna and acquires satellite signals received by the GPS antenna. For example, the GPS antenna interface 110 may be a GPS-ANT antenna pin, i.e., a pin for turning on an antenna, and the GPS-ANT pin is used to connect to the antenna to obtain satellite signals received by the antenna.
A switch module 120 connected to the GPS antenna interface 110, configured to repeatedly switch the passive line and the active line to transmit a satellite signal, and further configured to select the passive line or the active line according to a line selection signal to transmit the satellite signal when receiving the line selection signal;
the switch module 120 is connected to the GPS antenna interface, in other words, when the GPS antenna interface is externally connected to the GPS antenna, the switch module 120 is connected to the externally connected GPS antenna for controlling the receiving circuit of the satellite signal. The receiving lines include passive lines and active lines. The operation of the switch module 120 is as follows: the method comprises the steps of firstly, repeatedly switching and utilizing a passive line or an active line to transmit satellite signals, wherein the passive line and the active line can be repeatedly switched at preset time intervals, and also can be repeatedly switched at preset time intervals within preset time, for example, the circuit for transmitting the satellite signals is switched once every 2s, 3s or 5s within the preset time of 30s, 40s, 20s, 1min, 2min, 3min or 5 min. The above-mentioned process of switching the circuit is used for testing whether the external antenna is an active antenna or a passive antenna, the processing module 140 obtains the satellite signal repeatedly switched and transmitted, obtains the signal intensity of the satellite signal transmitted by using each circuit, generates a circuit selection signal according to the signal intensity and sends the signal to the switch module, and the switch module receives the signal and determines to select the active circuit or the passive circuit according to the signal to transmit the satellite signal and continues until the GPS antenna interface 110 switches the antenna. When the line selection signal is a passive line selection signal, the switch module selects a passive line; when the line selection signal is an active line selection signal, the switch module selects an active line, which is not described herein again.
In one embodiment, the switch module 120 is a relay, contactor, or semiconductor switch.
Among them, a relay (relay) is an electric control device that is an electric appliance that causes a controlled amount to change in a predetermined step change in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement, and that opens or closes. The contactor is used for connecting and disconnecting the main AC and DC circuits and the large-capacity control circuit remotely and frequently. The main control object is an electric motor, and the electric motor can also be used for controlling electric loads such as electric heating equipment, electric lighting, electric welding machines, capacitor banks and the like. Contactors are classified into alternating current contactors (voltage AC) and direct current contactors (voltage DC), which are applied to electric power, distribution, and utilization. Semiconductor switches, sensors made using various physical, chemical and biological properties of semiconductor materials. The Semiconductor switch may be an Insulated Gate field effect Transistor (MOSFET) switch, a Bipolar Junction Transistor (BJT) switch, or an Insulated Gate Bipolar Transistor (IGBT) switch.
A power supply module 130 connected to the GPS antenna interface 110, for supplying power to the GPS antenna interface 110 when the switch module 120 transmits the satellite signal by using the active line;
when the switch module 120 transmits the satellite signal through the active line, the power supply module 130 is activated to supply power to the GPS antenna interface 110, that is, the external GPS antenna connected to the GPS antenna interface 110 supplies power. That is, when the switch module 120 transmits the satellite signal through the active line, the power supply module 130 and the external GPS antenna form an active antenna. The power supply module 130 may be a battery or an active power source.
And a processing module 140 connected to the switching module 120, for receiving the satellite signals transmitted through the passive line and the active line, and generating a line selection signal according to signal strength information of the received satellite signals. In one embodiment, the processing module 140 is further configured to perform positioning processing according to the received satellite signals.
In the process of repeatedly switching the lines of the switch module 120, the processing module 140 obtains the signal strength of the satellite signal transmitted by each line, and generates a line selection signal according to the signal strength and sends the line selection signal to the switch module 120. Specifically, at a first time, if the current switch module 120 selects a passive line to transmit a satellite signal and continues for a preset interval time, the processing module 140 obtains the signal strength transmitted by the passive line, where the signal strength may be a mean value, a median value, a maximum value, or the like of the signal strength within the preset interval time; at the second moment, when the switch module 120 switches to the active line to transmit the satellite signal, and the preset interval time is continued, the processing module 140 obtains the signal intensity transmitted by the active line, the process is repeated N times, and N is set to be equal to or greater than 3 and equal to or less than 100. According to the acquired 2N signal strength information, the processing module 140 generates a line selection signal according to the 2N signal strength information. In addition, the processing module 140 may also perform positioning according to the received satellite signal to obtain the current position information.
In one embodiment, as shown in fig. 2, the processing module 140 includes: a first obtaining unit 141 configured to receive the satellite signal transmitted through the passive line for a plurality of times, and obtain a first signal strength according to a signal strength of the satellite signal transmitted through the passive line; a second obtaining unit 142, configured to receive the satellite signal transmitted through the active line for multiple times, and obtain a second signal strength according to the signal strength of the satellite signal transmitted through the active line; the signal generating unit 143 is connected to the first acquiring unit 141 and the second acquiring unit 142, respectively, and is configured to generate the line selection signal according to the first signal strength and the second signal strength.
The first obtaining unit 141 is used to receive the satellite signals transmitted through the passive line for multiple times, and read the signal strength of the satellite signals transmitted through the passive line, and obtain a first signal strength from the signal strength, where the first signal strength may be a mean value, a median value, a maximum value, or the like of all received satellite signal strengths within a preset time interval. The second obtaining unit 142 is used to receive the satellite signal transmitted through the active line for multiple times, and read the signal strength of the satellite signal transmitted through the active line, and obtain a second signal strength from the signal strength, where the second signal strength may be a mean value, a median value, a maximum value, or the like of all received satellite signal strengths within a preset time interval. It should be noted that, when the first signal strength is averaged, the second signal strength is also averaged. The line selection signal is generated by the signal generation unit 143 from the first signal strength and the second signal strength. A passive line select signal may be generated when the first signal strength is greater than the second signal strength, and an active line select signal may be generated otherwise.
In one embodiment, the processing module 140 further comprises: a constant setting unit 144 connected to the signal generating unit 143 for setting a sensitivity constant; the signal generating unit 143 is further configured to generate a line selection signal according to the first signal strength, the second signal strength, and the sensitivity constant.
Specifically, the processing module 140 includes a constant setting unit 144, and the constant setting unit 144 generates a sensitivity constant C, which is set by an engineer to set a corresponding value for preventing frequent switching or insufficient recognition sensitivity. For example, when switching frequently in the active line and the passive line, adding the sensitivity constant C can prevent the difference between the first signal strength and the second signal strength from jumping back and forth before 0. If the sensitivity constant C is not set, it is possible that a small GPS signal intensity change in the actual environment will trigger a switching operation between the active line and the passive line, and the value of the constant C needs to be adjusted according to the actual test effect. The signal generation unit 143 generates a line selection signal to trigger switching between the active line and the passive antenna according to the first signal strength, the second signal strength, and the sensitivity constant. For example, if the first signal strength is greater than the sum of the second signal strength and the sensitivity constant, a passive line selection signal is generated; if the first signal strength is less than the sum of the second signal strength and the sensitivity constant, an active line select signal is generated.
In one embodiment, the signal generating unit 143 is further configured to generate a passive line selection signal when the first signal strength is greater than a sum of strength, which is a sum of the second signal strength and a sensitivity constant; when the first signal strength is less than the sum of strengths, an active line select signal is generated.
Specifically, if the first signal strength is greater than the sum of the second signal strength and the sensitivity constant, the effect of identifying that the passive line transmits the satellite signal is better than that of the active line, and at this time, a passive line selection signal is generated to instruct the switch module 120 to select the passive line to transmit the satellite signal; if the first signal strength is less than the sum of the second signal strength and the sensitivity constant, then the effect of identifying that the active line transmits satellite signals is better than the passive line, and at this time, an active line selection signal is generated to instruct the switch module 120 to select the active line to transmit satellite signals.
In one embodiment, the assembly further comprises: and the noise amplification module 150 is disposed on the passive line, and is respectively connected to the processing module 140 and the switch module 120, and is configured to amplify a noise signal in the satellite signal transmitted through the passive line.
The GPS antenna comprises an active GPS antenna and a passive GPS antenna, a low-noise amplifier is arranged in the GPS active antenna, small signals are amplified to be amplified, gain can be increased, satellite signal receiving sensitivity can be improved, and power supply is needed. The passive GPS antenna has no amplification gain, has slightly poor performance, does not need power supply and is low in price.
In one embodiment, the assembly further comprises: and the dc blocking module 160 is connected to the switch module 120 and the GPS antenna interface 110, respectively, and is configured to filter a dc signal from the satellite signal acquired through the GPS antenna interface 110. In one embodiment, the blocking module is a blocking capacitor.
The dc blocking module 160 is configured to filter a dc signal in the satellite signal acquired through the GPS antenna interface 110, prevent the dc signal from burning out an internal circuit of the processing module 140, and reduce signal noise, so that the processing module 140 can analyze and acquire the satellite signal more accurately. The blocking module 160 may be a dc block or a dc blocking capacitor.
Above-mentioned GPS antenna module and system, the subassembly includes: a GPS antenna interface 110 connected to an external GPS antenna, for acquiring a satellite signal received by the GPS antenna; a switch module 120 connected to the GPS antenna interface 110, configured to repeatedly switch the passive line and the active line to transmit a satellite signal, and further configured to select the passive line or the active line according to a line selection signal to transmit the satellite signal when receiving the line selection signal; a power supply module 130 connected to the GPS antenna interface 110, for supplying power to the GPS antenna interface 110 when the switch module 120 transmits the satellite signal by using the active line; and a processing module 140 connected to the switching module 120, for receiving the satellite signals transmitted through the passive line and the active line, and generating a line selection signal according to signal strength information of the received satellite signals. The assembly is suitable for both a GPS active antenna and a GPS passive antenna, and has the advantages of strong compatibility, stable and reliable working performance and wider application range.
The embodiment of the present application provides a GPS antenna system including: a GPS antenna assembly 10 and a GPS antenna 20, the GPS antenna 20 is used for receiving satellite signals; a GPS antenna assembly 10 for acquiring satellite signals received by a GPS antenna; repeatedly switching the passive line and the active line to transmit satellite signals, and supplying power to the GPS antenna when the active line is used for transmitting the satellite signals; generating a line selection signal according to signal strength information of the received satellite signal; when the line selection signal is received, the passive line or the active line is selected according to the line selection signal to transmit the satellite signal.
The GPS antenna assembly 10 includes: a GPS antenna interface 110 connected to an external GPS antenna, for acquiring a satellite signal received by the GPS antenna; a switch module 120 connected to the GPS antenna interface, configured to repeatedly switch the passive line and the active line to transmit a satellite signal, and further configured to select the passive line or the active line according to the line selection signal to transmit the satellite signal when receiving the line selection signal; the power supply module 130 is connected with the GPS antenna interface and used for supplying power to the GPS antenna interface when the switch module utilizes an active line to transmit satellite signals; and the processing module 140 is connected to the switch module, and is configured to receive the satellite signals transmitted via the passive line and the active line, and generate a line selection signal according to signal strength information of the received satellite signals.
In one embodiment, the processing module comprises: a first acquisition unit configured to receive a satellite signal transmitted via a passive line for a plurality of times, and acquire a first signal intensity according to a signal intensity of the satellite signal transmitted via the passive line; a second acquisition unit configured to receive the satellite signal transmitted via the active line a plurality of times, and acquire a second signal strength according to a signal strength of the satellite signal transmitted via the active line; and the signal generating unit is respectively connected with the first acquiring unit and the second acquiring unit and used for generating a line selection signal according to the first signal intensity and the second signal intensity.
In one embodiment, the processing module further comprises: the constant setting unit is connected with the signal generating unit and is used for setting a sensitivity constant; and the signal generating unit is also used for generating a line selection signal according to the first signal strength, the second signal strength and the sensitivity constant.
In one embodiment, the signal generating unit is further configured to generate the passive line selection signal when the first signal strength is greater than a sum of strengths, the sum of strengths being a sum of the second signal strength and the sensitivity constant; when the first signal strength is less than the sum of strengths, an active line select signal is generated.
In one embodiment, the processing module is further configured to perform positioning processing based on the received satellite signals.
In one embodiment, the assembly further comprises: and the noise amplification module is arranged on the passive line, is respectively connected with the processing module and the switch module, and is used for amplifying the noise signal in the satellite signal transmitted through the passive line.
In one embodiment, the assembly further comprises: and the direct current blocking module is respectively connected with the switch module and the GPS antenna interface and is used for filtering direct current signals in satellite signals acquired through the GPS antenna interface.
In one embodiment, the blocking module is a blocking capacitor.
In one embodiment, the switch module is a relay, a contactor, or a semiconductor switch.
The above-mentioned GPS antenna system includes: GPS antenna module and GPS antenna, GPS antenna module includes: the GPS antenna interface is connected with an external GPS antenna and used for acquiring satellite signals received by the GPS antenna; the switch module is connected with the GPS antenna interface, is used for repeatedly switching the passive line and the active line to transmit satellite signals, and is also used for selecting the passive line or the active line to transmit the satellite signals according to the line selection signal when receiving the line selection signal; the power supply module is connected with the GPS antenna interface and used for supplying power to the GPS antenna interface when the switch module transmits satellite signals by using an active line; and the processing module is connected with the switch module and used for receiving the satellite signals transmitted by the passive line and the active line and generating a line selection signal according to the signal intensity information of the received satellite signals. The GPS antenna system is suitable for both GPS active antennas and GPS passive antennas, and has the advantages of strong compatibility, stable and reliable working performance and wide application range.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. It should be noted that "one embodiment," "for example," and the like in the present application are intended to illustrate the present application, and are not intended to limit the present application.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A GPS antenna assembly, the assembly comprising:
the GPS antenna interface is connected with an external GPS antenna and used for acquiring satellite signals received by the GPS antenna;
the switch module is connected with the GPS antenna interface, is used for repeatedly switching a passive line and an active line to transmit the satellite signals, and is also used for selecting the passive line or the active line to transmit the satellite signals according to the line selection signal when receiving the line selection signal;
the power supply module is connected with the GPS antenna interface and used for supplying power to the GPS antenna interface when the switch module utilizes the active line to transmit the satellite signal;
and the processing module is connected with the switch module and used for receiving the satellite signals transmitted by the passive line and the active line and generating the line selection signal according to the signal strength information of the received satellite signals.
2. The assembly of claim 1, wherein the processing module comprises:
a first acquisition unit configured to receive the satellite signal transmitted via the passive line a plurality of times, and acquire a first signal strength from a signal strength of the satellite signal transmitted via the passive line;
a second obtaining unit, configured to receive the satellite signal transmitted through the active line for multiple times, and obtain a second signal strength according to a signal strength of the satellite signal transmitted through the active line;
and the signal generating unit is respectively connected with the first acquiring unit and the second acquiring unit and is used for generating the line selection signal according to the first signal intensity and the second signal intensity.
3. The assembly of claim 2, wherein the processing module further comprises:
the constant setting unit is connected with the signal generating unit and is used for setting a sensitivity constant;
the signal generating unit is further configured to generate the line selection signal according to the first signal strength, the second signal strength, and the sensitivity constant.
4. The assembly of claim 3, wherein the signal generation unit is further configured to,
generating a passive line selection signal when the first signal strength is greater than a sum of the second signal strength and the sensitivity constant;
an active line select signal is generated when the first signal strength is less than the sum of strengths.
5. The assembly of claim 1, wherein the processing module is further configured to perform positioning processing based on the received satellite signals.
6. The assembly of claim 1, further comprising: and the noise amplification module is arranged on the passive line, is respectively connected with the processing module and the switch module, and is used for amplifying the noise signal in the satellite signal transmitted through the passive line.
7. The assembly of claim 1, further comprising: and the direct current blocking module is respectively connected with the switch module and the GPS antenna interface and is used for filtering direct current signals in the satellite signals acquired by the GPS antenna interface.
8. The assembly of claim 7, wherein the blocking module is a blocking capacitor.
9. The assembly of claim 1, wherein the switch module is a relay, a contactor, or a semiconductor switch.
10. A GPS antenna system, comprising:
a GPS antenna for receiving satellite signals;
the assembly of any one of claims 1 to 9, for use
Acquiring satellite signals received by the GPS antenna;
repeatedly switching a passive line and an active line to transmit the satellite signal, and supplying power to the GPS antenna when the active line is used for transmitting the satellite signal;
generating the line selection signal according to signal strength information of the received satellite signal;
and when a line selection signal is received, selecting the passive line or the active line according to the line selection signal to transmit the satellite signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920778935.0U CN210954352U (en) | 2019-05-28 | 2019-05-28 | GPS antenna assembly and system |
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| CN201920778935.0U CN210954352U (en) | 2019-05-28 | 2019-05-28 | GPS antenna assembly and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221323A (en) * | 2019-05-28 | 2019-09-10 | 深圳市广和通无线股份有限公司 | GPS antenna component and system |
| CN112468168A (en) * | 2020-11-05 | 2021-03-09 | 青岛海信移动通信技术股份有限公司 | Terminal |
| CN112929048A (en) * | 2021-01-27 | 2021-06-08 | 广州亚美智造科技有限公司 | Double-antenna switching circuit |
-
2019
- 2019-05-28 CN CN201920778935.0U patent/CN210954352U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221323A (en) * | 2019-05-28 | 2019-09-10 | 深圳市广和通无线股份有限公司 | GPS antenna component and system |
| CN112468168A (en) * | 2020-11-05 | 2021-03-09 | 青岛海信移动通信技术股份有限公司 | Terminal |
| CN112929048A (en) * | 2021-01-27 | 2021-06-08 | 广州亚美智造科技有限公司 | Double-antenna switching circuit |
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