Cellular antenna compensation device

Abstract

The invention provides a cellular antenna compensation device, and belongs to the technical field of wireless communication. The cellular antenna compensation device comprises a first radio frequency connection module, a multi-band frequency mixer, a multi-band access module, a comparator module, a main controller and a second radio frequency connection module, the multi-band channel module comprises a transceiving channel and a plurality of receiving channels. Wherein the comparator module is used for analyzing a radio frequency signal sent by the multi-band frequency mixer, selecting a target transmission channel in a transceiving path based on an analysis result, and outputting the analysis result to the main controller; and the main controller is used for adjusting the target transmission signal of the target transmission path according to the preset radio frequency line loss, the first sampling signal of the first sampling end, the second sampling signal of the second sampling end and the analysis result, so that the gain between the input signal and the output signal of the antenna compensation device is constant. According to the invention, the radio frequency insertion loss of the cellular communication module can be reduced, so that the radio frequency performance of the communication equipment can be improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a cellular antenna compensation device. Background Art

[0002] With the rapid development of smart cars and wireless communication technology, more and more smart cars are equipped with cellular communication modules. Smart cars exchange information with cloud servers through cellular communication modules to achieve remote control of smart cars. However, with the diversification of the functions of smart vehicles, there are many types of electronic devices deployed in smart vehicles. Due to the limitations of the space layout of the entire vehicle, the antenna cable length of the cellular communication module continues to increase, and the insertion loss of the cellular communication module continues to increase, resulting in a significant reduction in the RF performance of the cellular communication module. Therefore, there is an urgent need for a cellular communication module with reduced insertion loss to improve the RF performance of the entire vehicle.

[0003] In the related technologies, with the commercialization and popularization of the fifth generation mobile communication technology (5G), and with the retention of the second generation mobile communication technology (2G), the third generation mobile communication technology (3G) and the fourth generation mobile communication technology (4G), the technology of sending and receiving signals with multiple antennas (Multiple-Input Multiple-Output, MIMO) is widely used in communication equipment. Among them, in order to be compatible with the hardware design requirements of communication equipment such as 2G, 3G, 4G, 5G, and Wifi, the cellular communication module usually includes 6-8 antennas.

[0004] However, when information is exchanged between cloud servers and communication devices based on relevant technologies, there is a problem that the antenna cable of the cellular communication module is too long and the RF insertion loss of the cellular communication module is too large, which leads to poor RF performance of the communication device. Summary of the invention

[0005] The purpose of the present application is to provide a cellular antenna compensation device, which can reduce the radio frequency insertion loss of the cellular communication module to improve the radio frequency performance of the communication device.

[0006] The embodiment of the present application is implemented as follows:

[0007] In a first aspect of an embodiment of the present application, a cellular antenna compensation device is provided, the cellular antenna compensation device comprising: a first RF connection module, a multi-band mixer, a multi-band path module, a comparator module, a main controller, and a second RF connection module; the multi-band path module comprises a transceiver path;

[0008] The first radio frequency connection module is communicatively connected with the radio frequency cable, the multi-band mixer and the multi-band path module respectively;

[0009] The multi-band mixer is respectively connected to the input end of the comparator module and is communicatively connected to the multi-band path module;

[0010] The output end of the comparator module is respectively connected to the main controller and the multi-band channel module for communication. The comparator module is used to analyze the radio frequency signal sent by the multi-band mixer, select the target transmission channel in the transceiver channel based on the analysis result, and output the analysis result to the main controller;

[0011] The first sampling end and the second sampling end of the multi-band path module are both communicatively connected to the main controller, the output end of the main controller is communicatively connected to the control end of the multi-band path module, the multi-band path module is communicatively connected to the antenna via the second RF connection module, and the main controller is used to adjust the target transmission signal of the target transmission path according to the preset RF line loss, the first sampling signal of the first sampling end, the second sampling signal of the second sampling end and the analysis result, so that the gain between the input signal and the output signal of the cellular antenna compensation device is constant.

[0012] As a possible implementation, the multi-band channel module further includes: a first receiving channel, a second receiving channel and a third receiving channel;

[0013] The transceiver path is connected to the output end of the comparator module and the multi-band mixer respectively, and is also connected to the antenna communication through the second RF connection module. The transceiver path has a first sampling end and a second sampling end.

[0014] The input end of the first receiving path, the input end of the second receiving path, and the input end of the third receiving path are all connected to the antenna through the second RF connection module, and the output end of the first receiving path, the output end of the second receiving path, and the output end of the third receiving path are all connected to the first RF connection module.

[0015] As a possible implementation, the transceiver path includes: a first sampling circuit, a first RF frequency divider, a first electronic attenuator, a first RF switch, an amplification module, a second RF switch, a second RF frequency divider, and a second sampling circuit;

[0016] The input end of the first sampling circuit is respectively connected to the multi-band mixer and the first radio frequency divider, and the first radio frequency divider is also connected to the first electronic attenuator and the second radio frequency divider;

[0017] The first radio frequency switch is respectively connected to the output ends of the first electronic attenuator, the amplifying module and the comparator module, and the second radio frequency switch is respectively connected to the output ends of the amplifying module, the second radio frequency divider and the comparator module;

[0018] The input end of the second sampling circuit is connected to the second RF frequency divider and the second RF connection module respectively, and the output end of the first sampling circuit and the output end of the second sampling circuit are both connected to the main controller;

[0019] The main controller is also connected to the control end of the first electronic attenuator. The main controller is specifically used to adjust the attenuation ratio of the first electronic attenuator according to the preset RF line loss, the first sampling signal, the second sampling signal and the analysis result.

[0020] As a possible implementation, the amplification module includes: a first power amplifier, a second power amplifier, a third power amplifier and a first noise amplifier;

[0021] The input end of the first radio frequency switch is connected to the output end of the first noise amplifier, and the output end of the first radio frequency switch is respectively connected to the input end of the first power amplifier, the input end of the second power amplifier, and the input end of the third power amplifier;

[0022] The input end of the second RF switch is respectively connected to the output end of the first power amplifier, the output end of the second power amplifier and the output end of the third power amplifier, and the output end of the second RF switch is connected to the input end of the first noise amplifier.

[0023] As a possible implementation, the first sampling circuit includes: a first radio frequency coupler, a first detector, and a first amplifier;

[0024] The input end of the first radio frequency coupler is connected to the multi-band mixer and the first radio frequency divider respectively, and the output end of the first radio frequency coupler is connected to the input end of the first detector;

[0025] The output end of the first detector is connected to the input end of the first amplifier, and the output end of the first amplifier is connected to the main controller.

[0026] As a possible implementation, the second sampling circuit includes: a second radio frequency coupler, a second detector, and a second amplifier;

[0027] The input end of the second RF coupler is connected to the second RF frequency divider and the second RF connection module respectively, and the output end of the second RF coupler is connected to the input end of the second detector;

[0028] The output end of the second detector is connected to the input end of the second amplifier, and the output end of the second amplifier is connected to the main controller.

[0029] As a possible implementation, the first RF connection module includes: a first RF connector, a second RF connector, a third RF connector, and a fourth RF connector;

[0030] The output ends of the first RF connector, the second RF connector, the third RF connector and the fourth RF connector are all used to connect RF cables, and the first RF connector is also connected to the multi-band mixer;

[0031] The input end of the second RF connector is connected to the output end of the first receiving path, the input end of the third RF connector is connected to the output end of the second receiving path, and the input end of the fourth RF connector is connected to the output end of the third receiving path.

[0032] As a possible implementation, the first receiving path includes: a second electronic attenuator and a second noise amplifier;

[0033] The input end of the second noise amplifier is connected to the second RF connection module, the output end of the second noise amplifier is connected to the input end of the second electronic attenuator, the output end of the second electronic attenuator is connected to the input end of the second RF connector, and the control end of the second electronic attenuator is connected to the main controller.

[0034] As a possible implementation, the second receiving path includes: a third electronic attenuator and a third noise amplifier;

[0035] The input end of the third noise amplifier is connected to the second RF connection module, the output end of the third noise amplifier is connected to the input end of the third electronic attenuator, the output end of the third electronic attenuator is connected to the input end of the third RF connector, and the control end of the third electronic attenuator is connected to the main controller.

[0036] As a possible implementation, the third receiving path includes: a fourth electronic attenuator and a fourth noise amplifier;

[0037] The input end of the fourth noise amplifier is connected to the second RF connection module, the output end of the fourth noise amplifier is connected to the input end of the fourth electronic attenuator, the output end of the fourth electronic attenuator is connected to the input end of the fourth RF connector, and the control end of the fourth electronic attenuator is connected to the main controller.

[0038] The beneficial effects of the embodiments of the present application include:

[0039] A cellular antenna compensation device provided in an embodiment of the present application is composed of a first RF connection module, a multi-band mixer, a multi-band path module, a comparator module, a main controller and a second RF connection module. Among them, the first RF connection module is used to input the RF signal to be output by the upper circuit into the cellular antenna compensation device and transmit the signal received by the cellular antenna compensation device through the antenna to the upper circuit; the multi-band mixer is used to divide the RF signal input by the first RF connection module, and transmit the divided frequency band signals to the comparator module, or transmit the signal connected to the transceiver path through the antenna to the first RF connection module; the comparator module monitors the frequency band signals after the multi-band mixer frequency division processing, determines whether there is a RF signal to be output in the upper circuit, and generates a corresponding analysis result, and transmits the analysis result to the transceiver path and the main controller; the transceiver path selects the target transmission channel for main signal transmission based on the analysis result sent by the comparator module; the main controller adjusts the attenuation ratio of the multi-band path module based on the first sampling signal, the second sampling signal, the preset RF line loss and the analysis result output by the comparator module of the transceiver path, so that the input signal and the output signal of the cellular antenna compensation device maintain a constant gain. In addition, the cellular antenna compensation device can also monitor the ambient temperature of the cellular antenna compensation device in real time, and adjust the constant gain of the cellular antenna compensation device according to the real-time ambient temperature. In this way, the radio frequency insertion loss of the cellular communication module can be reduced to improve the radio frequency performance of the communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the structure of a first cellular antenna compensation device provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure of a second cellular antenna compensation device provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of the structure of a third cellular antenna compensation device provided in an embodiment of the present application;

[0044] Figure 4 A schematic structural diagram of a fourth cellular antenna compensation device provided in an embodiment of the present application;

[0045] Figure 5A schematic structural diagram of a fifth cellular antenna compensation device provided in an embodiment of the present application;

[0046] Figure 6 A schematic diagram of the structure of a sixth cellular antenna compensation device provided in an embodiment of the present application.

[0047] Description of the drawings: 10: cellular antenna compensation device; 101: first RF connection module; 1011: first RF connector; 1012: second RF connector; 1013: third RF connector; 1014: fourth RF connector; 102: multi-band mixer; 103: multi-band path module; 1031: transceiver path; 311: first sampling circuit; 3111: first RF coupler; 3112: first detector; 3113: first amplifier; 312: first RF divider; 313: first electronic attenuator; 314: first RF switch; 315: amplifier module; 3151: first power amplifier; 3152: second power amplifier; 31 53: third power amplifier; 3154: first noise amplifier; 316: second RF switch; 317: second RF divider; 318: second sampling circuit; 3181: second RF coupler; 3182: second detector; 3183: second amplifier; 1032: first receiving path; 321: second electronic attenuator; 322: second noise amplifier; 1033: second receiving path; 331: third electronic attenuator; 332: third noise amplifier; 1034: third receiving path; 341: fourth electronic attenuator; 342: fourth noise amplifier; 104: comparator module; 105: main controller; 106: second RF connection module. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0051] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. It should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] At present, cellular communication modules are often deployed in smart cars to realize information interaction between smart cars and cloud servers. With the commercialization of 5G and the retention of 2G, 3G, and 4G, MIMO technology is widely used in communication equipment. Among them, in order to be compatible with the hardware design requirements of communication equipment such as 2G, 3G, 4G, 5G, and Wifi, cellular communication modules usually include 6-8 antennas. However, this solution has the problem that the antenna cable of the cellular communication module is too long and the RF insertion loss of the cellular communication module is too large, which leads to poor RF performance of the communication equipment.

[0053] To this end, an embodiment of the present application provides a cellular antenna compensation device, which is composed of a first RF connection module, a multi-band mixer, a multi-band path module, a comparator module, a main controller and a second RF connection module. Among them, the comparator module is used to analyze the RF signal sent by the multi-band mixer, and select the target transmission channel in the transceiver path based on the analysis result, and output the analysis result to the main controller; the main controller is used to adjust the target transmission signal of the target transmission path according to the preset RF line loss, the first sampling signal of the first sampling end, the second sampling signal of the second sampling end and the analysis result, so that the gain between the input signal and the output signal of the antenna compensation device is constant. In addition, the main controller also adjusts the attenuation ratio of the multi-band path module based on the preset RF line loss and the analysis result output by the comparator module to compensate for the transmission loss of the antenna signal. In this way, the RF insertion loss of the cellular communication module can be reduced to improve the RF performance of the communication equipment.

[0054] The cellular antenna compensation device provided in the embodiment of the present application can be applied to smart cars, but is not limited to smart cars, and can also be applied to other wireless communication electronic devices, which is not specifically limited in the present application. Among them, the cellular antenna compensation device is arranged between the cellular communication module and the cloud server, and the cellular antenna compensation device is used to compensate for the radio frequency insertion loss generated when the radio frequency cable between the cellular communication module and the cloud server transmits the signal, thereby improving the signal communication quality.

[0055] The cellular antenna compensation device provided in the embodiment of the present application is explained in detail below with reference to the accompanying drawings.

[0056] Figure 1 A schematic diagram of the structure of a cellular antenna compensation device provided in this application, see Figure 1 An embodiment of the present application provides a cellular antenna compensation device 10, comprising: a first RF connection module 101, a multi-band mixer 102, a multi-band path module 103, a comparator module 104, a main controller 105 and a second RF connection module 106, wherein the multi-band path module 103 includes a transceiver path 1031.

[0057] Optionally, the first RF connection module 101 may be composed of multiple RF connectors. The first RF connection module 101 is used to connect the RF signal transmitted by the upper circuit to the cellular antenna compensation device 10. At the same time, the first RF connection module 101 can also transmit the signal received by the antenna to the upper circuit.

[0058] Optionally, the multi-band mixer 102 can divide and analyze the RF signal transmitted by the upper circuit, and the multi-band mixer 102 can divide and analyze the RF signal transmitted by the upper circuit to the cellular antenna compensation device 10, and analyze the power control signal corresponding to each frequency band signal. Figure 6 The comparator module 104 is composed of a plurality of signal comparators, each signal comparator processes a different signal frequency band. The cellular antenna compensation device 10 also includes a power supply module. The multi-band mixer 102 sends the analyzed signals of each frequency band to the comparator module 104, and sends a power supply control signal to the power supply module. The power supply module provides corresponding working voltages to each electronic device in the cellular antenna compensation device 10 based on the received power supply control signal. The comparator module 104 sends corresponding control signals to the main controller 105 and the transceiver path 1031 respectively based on the received RF signal after frequency division processing.

[0059] Optionally, the power module can be implemented by a power management chip. The power module provides corresponding voltages, such as 1.8V, 3.3V, 5V, etc., to each electronic device in the cellular antenna compensation device 10 based on the power control signal corresponding to each frequency band signal output by the multi-band mixer 102. The power module can provide multiple operating voltages for the cellular antenna compensation device 10 at the same time.

[0060] Optionally, the comparator module 104 sends a control signal to the transceiver path 1031 based on the RF signal after frequency division processing, which is used to control the on and off of each path in the transceiver path 1031 and select the transmission channel that is most suitable for the RF signal in this frequency band; the comparator module 104 also sends a control signal to the main controller 105, and the main controller 105 controls the attenuation ratio of the transceiver path 1031 and the receiving path in the multi-band path module 103 based on the received control signal, so that the input signal and the output signal of the cellular antenna compensation device 10 maintain a constant gain.

[0061] Optionally, the transceiver path 1031 can transmit the signal received by the antenna to the upper circuit, and can also compensate the RF signal sent by the upper circuit and send it through the antenna; the receiving path can only transmit the signal received by the antenna to the upper circuit.

[0062] Optionally, the second RF connection module 106 is implemented by multiple RF connectors. The second RF connection module 106 can transmit the signal received by the antenna to the cellular antenna compensation device 10, and can also transmit the RF signal emitted by the upper circuit to the antenna to realize information interaction between the cellular antenna module and the server.

[0063] The first RF connection module 101 is communicatively connected to the RF cable, the multi-band mixer 102 and the multi-band path module 103 respectively.

[0064] Optionally, the port connecting the first RF connection module 101 to the RF cable can be regarded as the first end of the first RF connection module 101. The first end of the first RF connection module 101 can transmit the RF signal transmitted by the upper circuit to the cellular antenna compensation device 10, and can also feed back the signal received by the cellular antenna compensation device 10 through the antenna to the upper circuit.

[0065] Optionally, the port where the first RF connection module 101 is connected to the multi-band mixer 102 can be regarded as the second end of the first RF connection module 101, and the port where the multi-band mixer 102 communicates with the first RF connection module 101 can be regarded as the first end of the multi-band mixer 102. The first RF connection module 101 transmits the RF signal transmitted by the upper circuit through the RF cable to the multi-band mixer 102 through the second end of the first RF connection module 101. The first end of the first RF connection module 101 acts as the first output end of the first RF connection module 101 when transmitting the RF signal emitted by the upper circuit to the cellular antenna compensation device 10; the first end of the first RF connection module 101 acts as the first input end of the first RF connection module 101 when transmitting the antenna signal received by the cellular antenna compensation device 10 to the upper circuit, and this application does not make specific limitations on this.

[0066] Optionally, the port connecting the first RF connection module 101 and the multi-band path module 103 can be regarded as the third end of the first RF connection module 101, and the port through which the multi-band path module 103 communicates with the first RF connection module 101 can be regarded as the second end of the multi-band path module 103. The third end of the first RF connection module 101 is used to access the antenna signal transmitted by the multi-band path module 103, and transmit the antenna signal received by the receiving path to the upper circuit.

[0067] The multi-band mixer 102 is respectively communicated with the input end of the comparator module 104 and the transceiver path 1031 in the multi-band path module 103, and the output end of the comparator module 104 is respectively communicated with the main controller 105 and the transceiver path 1031 in the multi-band path module 103. The comparator module 104 is used to parse the RF signal sent by the multi-band mixer 102, select the target transmission channel in the transceiver path 1031 based on the analysis result, and output the analysis result to the main controller 105.

[0068] Optionally, the multi-band mixer 102 can support the passage of multi-band RF signals and can isolate the RF signals of each frequency band. The multi-band mixer 102 can be implemented by a mixer circuit. The multi-band mixer 102 can analyze the RF signal transmitted by the first RF connection module 101 and determine the transmission channel corresponding to the RF signal of each frequency band in the RF signal. For example, the multi-band mixer 102 can support multi-band electrical signals such as 12MHz, 38MHz, 125MHz, 800Mz-5000MHz and DC signals, and determine the transmission path of the electrical signal of each frequency band according to the signal frequency. This application does not make specific limitations on this.

[0069] It is worth noting that the multi-band mixer 102 analyzes the RF signal input by the first RF connection module 101 to obtain multi-band electrical signals such as 12MHz, 38MHz, 125MHz, 800Mz-5000MHz and DC signals. Among them, 12MHz, 38MHz, and 125MHz are modulation signals corresponding to the control signal, and the comparator module 104 is used to detect whether there is a modulation signal corresponding to the control signal in the RF signal connected to the cellular antenna compensation device 10; 800Mz-5000MHz is used to indicate a useful RF signal that needs to be amplified; and the DC signal is used to indicate the voltage control signal required for the cellular antenna compensation device 10 to work.

[0070] Optionally, the port connecting the multi-band mixer 102 and the input end of the comparator module 104 can be regarded as the second end of the multi-band mixer 102. The multi-band mixer 102 outputs the parsed electrical signals of each frequency band to the comparator module 104 via the second end. The comparator module 104 is implemented by a multi-band signal comparator. The comparator module 104 is used to detect whether the upper circuit has a radio frequency signal that needs to be transmitted. For example, the comparator module 104 is used to detect whether 12MHz, 38MHz, and 125MHz exist. If so, the corresponding signal comparator in the comparator module 104 outputs a high level to control the on and off of each transmission channel in the transceiver path 1031; if not, each signal comparator in the comparator module 104 outputs a low level. It is worth noting that the comparator module 104 transmits corresponding control signals to the main controller 105 and the transceiver path 1031 based on the RF signal transmitted by the multi-band mixer 102. The control signals generated by the comparator module 104 include: GRFC0, GRFC1 and UART_DL. GRFC0 and GRFC1 are used to control the on and off of each transmission channel in the transceiver path 1031, and UART_DL is used to control the attenuation ratio of the multi-band path module 103.

[0071] Optionally, the target transmission channel is used to indicate the transmission channel that is controlled by the control signal output by the comparator module 104. There may be multiple target transmission channels in the transceiver path 1031 at the same time, that is, there may be electrical signal transmissions of multiple frequency bands in one information interaction. There may also be only one target transmission channel in the transceiver path 1031. This application does not make any specific limitations on this.

[0072] Optionally, the analysis result output by the multi-band mixer 102 to the comparator module 104 is the result of isolating the received mixed signal by frequency bands; the analysis result output by the comparator module 104 to the transceiver path 1031 and the main controller 105 is the control signal generated by the comparator module 104 based on the received RF signal detection.

[0073] It is worth noting that the comparator module 104 is used to detect the radio frequency signal to be transmitted in each frequency band signal output by the multi-band mixer 102, and generate a control signal corresponding to each frequency band signal based on the detection result. If the comparator module 104 detects that there is a 12MHz signal in each frequency band signal output by the multi-band mixer 102, the comparator module 104 outputs GRFC0=1; if the comparator module 104 detects that there is no 38MHz signal in each frequency band signal output by the multi-band mixer 102, the comparator module 104 outputs GRFC1=0, etc.

[0074] Optionally, the port connecting the multi-band mixer 102 and the multi-band path module 103 can be regarded as the third end of the multi-band mixer 102, and the third end of the multi-band mixer 102 is used to transmit the received RF signal to the transceiver path 1031 in the multi-band path module 103, and the multi-band path module 103 outputs a signal corresponding to the RF signal output by the upper circuit.

[0075] The first sampling end and the second sampling end of the multi-band path module 103 are both connected to the main controller 105, the output end of the main controller 105 is communicatively connected to the control end of the multi-band path module 103, the multi-band path module 103 is communicatively connected to the antenna via the second RF connection module 106, and the main controller 105 is used to adjust the target transmission signal of the target transmission path according to the preset RF line loss, the first sampling signal of the first sampling end, the second sampling signal of the second sampling end and the analysis result, so that the gain between the input signal and the output signal of the cellular antenna compensation device 10 is constant.

[0076] Optionally, the first sampling end of the multi-band path module 103 is used to sample the radio frequency signal received by the transceiver path 1031 from the multi-band mixer 102 or the antenna signal transmitted by the transceiver path 1031 to the upper circuit via the multi-band mixer 102, that is, the first sampling signal can be the radio frequency signal received by the multi-band mixer from the upper circuit and transmitted to the cellular antenna compensation device 10, or it can be the antenna signal received by the transceiver path 1031 via the antenna and transmitted to the upper circuit via the multi-band mixer 102.

[0077] Optionally, the second sampling end of the multi-band path module 103 is used to sample the RF signal output by the transceiver path 1031 to the antenna or the antenna signal received by the antenna and transmitted to the superior circuit via the transceiver path 1031, that is, the second sampling signal can be either the antenna signal received by the transceiver path 1031 via the antenna or the RF signal sent by the superior circuit to the antenna via the transceiver path 1031.

[0078] Optionally, the preset RF line loss refers to the line loss measurement value corresponding to each RF cable connected to the cellular antenna compensation device 10, and the line loss measurement value corresponding to each RF cable is measured in advance by relevant staff using a measuring tool, and the RF line loss corresponding to each RF cable is fixed. The relevant staff writes the measured RF line loss in advance into the main controller 105. It is worth noting that the RF line loss of each RF cable is determined by the length, material, etc. of the RF cable.

[0079] Optionally, the main controller 105 adjusts the target transmission signal of the target transmission path according to the first sampling signal, the second sampling signal, the preset RF line loss and the control signal generated by the comparator module 104, so that the input signal and the output signal of the cellular antenna compensation device 10 maintain a constant gain, and the constant gain can be 20dB, 15dB, etc.

[0080] Optionally, the main controller 105 may monitor the operating temperature of the cellular antenna compensation device 10 in real time, and adjust the value of the constant gain in real time according to the operating temperature of the cellular antenna compensation device 10 , thereby ensuring the sensitivity of the cellular antenna compensation device 10 .

[0081] In the embodiment of the present application, a cellular antenna compensation device is formed by a first RF connection module, a multi-band mixer, a multi-band path module, a comparator module, a main controller and a second RF connection module. Among them, the first RF connection module is used to input the RF signal to be output by the upper circuit into the cellular antenna compensation device and transmit the signal received by the cellular antenna compensation device through the antenna to the upper circuit; the multi-band mixer is used to divide the RF signal input by the first RF connection module, and transmit the divided frequency band signals to the comparator module, or transmit the signal connected to the transceiver path through the antenna to the first RF connection module; the comparator module monitors the frequency band signals after the multi-band mixer frequency division processing, determines whether there is a RF signal to be output in the upper circuit, and generates a corresponding analysis result, and transmits the analysis result to the transceiver path and the main controller; the transceiver path selects the target transmission channel for main signal transmission based on the analysis result sent by the comparator module; the main controller adjusts the attenuation ratio of the multi-band path module based on the first sampling signal, the second sampling signal, the preset RF line loss and the analysis result output by the comparator module of the transceiver path, so that the input signal and the output signal of the cellular antenna compensation device maintain a constant gain. In addition, the cellular antenna compensation device can also monitor the ambient temperature of the cellular antenna compensation device in real time, and adjust the constant gain of the cellular antenna compensation device according to the real-time ambient temperature. In this way, the radio frequency insertion loss of the cellular communication module can be reduced to improve the radio frequency performance of the communication device.

[0082] As an optional implementation, see Figure 2The multi-band channel module 103 provided in the embodiment of the present application further includes: a first receiving channel 1032 , a second receiving channel 1033 and a third receiving channel 1034 .

[0083] Alternatively, see Figure 6 The transceiver path 1031 is connected to the antenna 1 via the second RF connection module 106. The transceiver path 1031 can send the RF signal output by the upper circuit to the server via the antenna 1 to realize information interaction. The transceiver path 1031 can also transmit the signal received by the antenna 1 to the upper circuit; the first receiving path 1032 is connected to the antenna 2 via the second RF connection module 106. The first receiving path 1032 can transmit the signal received by the antenna 2 to the upper circuit; the second receiving path 1033 is connected to the antenna 3 via the second RF connection module 106. The second receiving path 1033 can transmit the signal received by the antenna 3 to the upper circuit; the third receiving path 1034 is connected to the antenna 4 via the second RF connection module 106. The third receiving path 1034 can transmit the signal received by the antenna 4 to the upper circuit.

[0084] The transceiver path 1031 is connected to the output end of the comparator module 104 and the multi-band mixer 102 respectively. The transceiver path 1031 is also connected to the antenna through the second RF connection module 106. The transceiver path 1031 has a first sampling end and a second sampling end.

[0085] Optionally, the transceiver path 1031 is used to transmit the main RF signal to be transmitted by the upper circuit. The transceiver path 1031 can also transmit the signal received by the antenna 1 to the upper circuit. The output end of the comparator module 104 connected to the transceiver path 1031 can be regarded as the first output end of the comparator module 104. When the transceiver path 1031 sends the RF signal transmitted by the upper circuit, the target transmission channel is selected under the action of the control signal output from the first output end of the comparator module 104.

[0086] Optionally, the main controller 105 obtains the input signal and the output signal of the transceiver path 1031 via the first sampling end and the second sampling end, and the main controller 105 adjusts the attenuation ratio of the transceiver path based on the first sampling signal, the second sampling signal, the preset RF line loss and the analysis result output by the comparator module 104.

[0087] The input end of the first receiving path 1032, the input end of the second receiving path 1033, and the input end of the third receiving path 1034 are all connected to the antenna communication via the second RF connection module 106, and the output end of the first receiving path 1032, the output end of the second receiving path 1033, and the output end of the third receiving path 1034 are all connected to the first RF connection module 101.

[0088] Optionally, the port at which the first RF connection module 101 is connected to the output end of each receiving path can be regarded as the third end of the first RF connection module 101, the first receiving path 1032 receives the signal transmitted by the antenna 2 via the second RF connection module 106, the second receiving path 1033 receives the signal transmitted by the antenna 3 via the second RF connection module 106, and the third receiving path 1034 receives the signal transmitted by the antenna 4 via the second RF connection module 106, and transmits the signal to the upper circuit via the third end of the first RF connection module 101.

[0089] As an optional implementation, Figure 3 For a structural diagram of the second cellular antenna compensation device provided in this application, see Figure 3 The transceiver path 1031 in the cellular antenna compensation device 10 provided in the embodiment of the present application includes: a first sampling circuit 311, a first RF divider 312, a first electronic attenuator 313, a first RF switch 314, an amplification module 315, a second RF switch 316, a second RF divider 317 and a second sampling circuit 318.

[0090] The input end of the first sampling circuit 311 is connected to the multi-band mixer 102 and the first RF frequency divider 312 respectively. The first RF frequency divider 312 is also connected to the first electronic attenuator 313 and the second RF frequency divider 317 .

[0091] Optionally, the first sampling circuit 311 is used to sample the radio frequency signal received by the transceiver path 1031 from the multi-band mixer 102 or the antenna signal transmitted by the transceiver path 1031 to the upper circuit via the multi-band mixer 102 .

[0092] Optionally, the first RF divider 312 is used to divide the RF signal input into the cellular antenna compensation device 10 by the upper circuit through the multi-band mixer 102 into different transmission channels based on the frequency range. The first RF divider 312 can be implemented by a divider of 800-2200MHz or 2300MHz-5000MHz.

[0093] The first RF switch 314 is connected to the first electronic attenuator 313 , the amplifying module 315 and the output end of the comparator module 104 , respectively. The second RF switch 316 is connected to the amplifying module 315 , the second RF divider 317 and the output end of the comparator module 104 , respectively.

[0094] Optionally, the first electronic attenuator 313 is used to attenuate the radio frequency signal according to the circuit requirements of the cellular antenna compensation device 10. The first electronic attenuator 313 can be implemented by an attenuator of 0.25dB-32dB, which is not specifically limited in the present application.

[0095] Optionally, the first RF switch 314 and the second RF switch 316 are used to switch transmission channels of different frequency bands. The first RF switch 314 and the second RF switch 316 switch the transmission channels under the control signal output by the comparator module 104. The transmission channels switched by the first RF switch 314 and the second RF switch 316 are the target transmission channels.

[0096] The input end of the second sampling circuit 318 is connected to the second RF frequency divider 317 and the second RF connection module 106 respectively, and the output end of the first sampling circuit 311 and the output end of the second sampling circuit 318 are both connected to the main controller 105 .

[0097] Optionally, the second sampling circuit 318 is used to sample the radio frequency signal output by the transceiver path 1031 to the antenna or the antenna signal received by the antenna and transmitted to the upper circuit via the transceiver path 1031 .

[0098] Optionally, the second RF divider 317 is used to divide the signal received by the antenna 1 into different transmission channels based on the frequency range. The second RF divider 317 can be implemented by a 800-2200MHz or 2300MHz-5000MHz divider, and this application does not make any specific limitations on this.

[0099] Optionally, the first RF frequency divider 312 and the second RF frequency divider 317 are added to the transceiver path 1031 to divide the RF signal in the 2300-5000 MHz frequency band into the first RF switch 314 and the second RF switch 316. The first RF switch 314 and the second RF switch 316 are switched to a specific amplification path under the control of GRFC0 and GRFC1 output by the comparator module 104. Among them, the first RF frequency divider 312 and the second RF frequency divider 317 can directly connect the 800-2200 MHz signal to the antenna 1 without amplification.

[0100] Optionally, the amplification module 315 is used to amplify the radio frequency signal to be transmitted by the upper circuit or the antenna signal received by the antenna 1.

[0101] The main controller 105 is also connected to the control end of the first electronic attenuator 313. The main controller 105 is specifically used to adjust the attenuation ratio of the first electronic attenuator 313 according to the preset RF line loss, the first sampling signal, the second sampling signal and the analysis result.

[0102] Optionally, the main controller 105 can modulate the attenuation ratio of the first electronic attenuator 313 according to the first sampling signal, the second sampling signal, the preset RF line loss and the analysis result output by the comparator module 104. The main controller 105 can also adjust the attenuation ratio of the first electronic attenuator 313 according to the real-time working temperature of the cellular antenna compensation device 10.

[0103] As an optional implementation, see Figure 3 The amplification module 315 of the transceiver path 1031 in the cellular antenna compensation device 10 provided in the embodiment of the present application includes: a first power amplifier 3151 , a second power amplifier 3152 , a third power amplifier 3153 and a first noise amplifier 3154 .

[0104] Optionally, the first power amplifier 3151, the second power amplifier 3152, and the third power amplifier 3153 are all used to amplify the radio frequency signal emitted by the upper circuit, and the first power amplifier 3151, the second power amplifier 3152, and the third power amplifier 3153 are used to amplify the radio frequency signals of different frequency bands in the signal output by the upper circuit.

[0105] Optionally, the first power amplifier 3151 can be a power amplifier of the n79 frequency band, used to amplify the transmission signal of the n79 frequency band in the radio frequency signal emitted by the upper circuit; the second power amplifier 3152 can be a power amplifier of the n77 frequency band, used to amplify the transmission signal of the n77 frequency band in the radio frequency signal emitted by the upper circuit; the third power amplifier 3153 can be a power amplifier of the n40 / n41 frequency band, used to amplify the transmission signal of the n40 / n41 frequency band in the radio frequency signal emitted by the upper circuit.

[0106] Optionally, the first noise amplifier 3154 is implemented by a wide-band low-noise amplifier. The first noise amplifier 3154 can be implemented by a 1700-6000MHz low-noise amplifier or a 600-6000MHz low-noise amplifier. The first noise amplifier 3154 is used to amplify the small signal received by the antenna 1.

[0107] Optionally, the first RF switch 314 and the second RF switch 316 in the transceiver path 1031 can divide the transceiver path 1031 into four paths, namely, the transmit (TX) power amplification path of n79, the transmit (TX) power amplification path of n77 / 78, the transmit (TX) power amplification path of B38 / 40 / 41 and n38 / 40 / 41, and the receive (RX) amplification path of B38 / 40 / 41 and n38 / 40 / 41 / 77 / 78 / 79. The transceiver path 1031 divides the RF signal in the 2300MHz-5000MHz frequency band into the B38 / 40 / 41 and n38 / 40 / 41 / 77 / 78 / 79 frequency bands, and controls and switches the first RF switch 314 and the second RF switch 316 on and off via GRFC0 and GRFC1 output by the comparator module 104.

[0108] Optionally, the main controller 105 can adjust the attenuation of the first electronic attenuator 313 according to the RF line loss corresponding to the RF cable, so that the power of the RF signal entering the amplification module 315 in the transceiver path 1031 is constant, and the gain of each power amplifier is also adjusted to a fixed value. The main controller 105 detects the input power and output power of the transceiver path 1031 through the output signal of the coupler in the first sampling circuit 311 and the second sampling circuit 318, and dynamically adjusts the attenuation ratio of the first electronic attenuator 313 based on this, so that the input signal and the output signal of the cellular antenna compensation device maintain a constant gain, so as to achieve the purpose of dynamic power adjustment.

[0109] The input end of the first RF switch 314 is connected to the output end of the first noise amplifier 3154 , and the output end of the first RF switch 314 is connected to the input end of the first power amplifier 3151 , the input end of the second power amplifier 3152 , and the input end of the third power amplifier 3153 .

[0110] The input end of the second RF switch 316 is connected to the output end of the first power amplifier 3151 , the output end of the second power amplifier 3152 , and the output end of the third power amplifier 3153 , respectively. The output end of the second RF switch 316 is connected to the input end of the first noise amplifier 3154 .

[0111] For example, if the output mode of the transceiver path 1031 is determined to be the n41 transmission mode, the output signal of the upper circuit is 23dBm, and the upper circuit simultaneously outputs the control signals GRFC0=1.8V and GRFC1=1.8V. The signal comparison circuit in the upper circuit outputs GRFC0=1.8V as a 12MHz signal, and outputs GRFC0=1.8V as a 38MHz signal. The mixing circuit in the upper circuit mixes the 12MHz, 38MHz, n41 transmission signal (2500MHz), and 12V voltage onto the RF cable, and transmits the signal to the cellular antenna patch through the RF cable. The cellular antenna compensation device 10 receives the 12MHz, 38MHz, and n41 transmission signals, and the multi-band mixer 102 analyzes the 12MHz, 38MHz, and 12V voltages through the internal mixing circuit. The comparator module 104 detects 12MHz and 38MHz, and pulls GRFC0 and GRFC1 to 1.8V through the corresponding signal comparator. After the first RF switch 314 and the second RF switch 316 receive GRFC0=1.8V and GRFC1=1.8V, the first RF switch 314 and the second RF switch 316 switch the transceiver path to n41. In the TX power amplification path, the transmission power of the n41 frequency band is transmitted to the third power amplifier 3153 for amplification. If the RF line loss corresponding to the RF cable 1 is 10dB, the attenuation ratio of the first electronic attenuator is 5dB, and the gain of the third power amplifier 3153 is 17dB, then the output signal of the third power amplifier 3153 is 25dBm (23dBm-10dB-5dB+17dB), minus the rear-end RF insertion loss of 2dB of the third power amplifier 3153, and the final output signal to the antenna 1 is 23dBm. After amplification by the cellular antenna compensation device, the 10dB RF line loss is eliminated.

[0112] Exemplarily, if the transceiver path 1031 is switched to the n41 receiving mode, the cellular antenna 1 outputs GRFC0=1.8V and GRFC1=0V to the cellular antenna compensation device 10, the signal comparison circuit on the cellular antenna module outputs GRFC0=1.8V as a 12MHz signal, the mixing circuit on the cellular antenna module mixes the 12MHz signal and the 12V voltage into an RF cable, and transmits the signal to the cellular antenna compensation device 10 through the RF cable. If the cellular antenna compensation device 10 does not receive the MHz signal at this time, the comparator module 104 pulls down GRFC1, the first RF switch 314 and the second RF switch 316 switch the transceiver path 1031 to the n41 RX low-noise amplification path, and amplifies the received signal of the n41 frequency band received on the antenna 1. Since the gain of the first noise amplifier 3154 is about 18dB, which is greater than the RF line loss of 10dB corresponding to the RF cable 1, it can effectively offset the increase in noise coefficient caused by the RF line loss, thereby increasing sensitivity.

[0113] As an optional implementation, see Figure 3 The first sampling circuit 311 of the transceiver path 1031 in the cellular antenna compensation device 10 provided in the embodiment of the present application includes: a first RF coupler 3111 , a first detector 3112 and a first amplifier 3113 .

[0114] The input end of the first RF coupler 3111 is connected to the multi-band mixer 102 and the first RF divider 312 respectively, and the output end of the first RF coupler 3111 is connected to the input end of the first detector 3112 .

[0115] Optionally, the first RF coupler 3111 is used to couple the RF signal transmitted by the multi-band mixer 102, so that the transceiver path 1031 outputs a RF signal corresponding to the power of the RF signal output by the upper circuit, and the main controller 105 detects the power of the RF signal input by the multi-band mixer 102 to the cellular antenna compensation device 10 based on the first RF coupler 3111.

[0116] The output end of the first detector 3112 is connected to the input end of the first amplifier 3113 , and the output end of the first amplifier 3113 is connected to the main controller 105 .

[0117] Optionally, the first detector 3112 is used to convert the RF signal output by the first RF coupler 3111 into a corresponding voltage signal, and the first amplifier 3113 is used to amplify the voltage signal output by the first detector 3112 and transmit the amplified voltage signal to the main controller 105 .

[0118] As an optional implementation, see Figure 3The second sampling circuit 318 of the transceiver path 1031 in the cellular antenna compensation device 10 provided in the embodiment of the present application includes: a second RF coupler 3181 , a second detector 3182 and a second amplifier 3183 .

[0119] An input end of the second RF coupler 3181 is connected to the second RF frequency divider 317 and the second RF connection module 106 respectively, and an output end of the second RF coupler 3181 is connected to an input end of the second detector 3182 .

[0120] Optionally, the second RF coupler 3181 is used to couple the RF signal received by the antenna 1, so that the transceiver path 1031 outputs a RF signal corresponding to the signal power received by the antenna 1 to the multi-band mixer 102, and the main controller 105 detects the power of the RF signal input by the antenna 1 to the cellular antenna compensation device 10 based on the second RF coupler 3181.

[0121] The output end of the second detector 3182 is connected to the input end of the second amplifier 3183 , and the output end of the second amplifier 3183 is connected to the main controller 105 .

[0122] Optionally, the second detector 3182 is used to convert the RF signal output by the second RF coupler 3181 into a corresponding voltage signal, and the second amplifier 3183 is used to amplify the voltage signal output by the second detector 3182 and transmit the amplified voltage signal to the main controller 105.

[0123] Optionally, the main controller 105 can be implemented by a control chip MCU. The main controller 105 is mainly used to control the attenuation ratio of the electronic attenuator in the multi-band path module 103 and process the coupling feedback signal in the transceiver path 1031 .

[0124] As an optional implementation, Figure 4 For a structural diagram of the third cellular antenna compensation device provided in this application, see Figure 4 The first RF connection module 101 in the cellular antenna compensation device 10 provided in the embodiment of the present application includes: a first RF connector 1011, a second RF connector 1012, a third RF connector 1013 and a fourth RF connector 1014.

[0125] Optionally, the first RF connection module 101 is implemented by multiple RF connectors, so that the cellular antenna compensation device 10 can simultaneously support the output of multiple RF signals. The first RF connection module 101 in the cellular antenna compensation device 10 provided in the present application is implemented by a 4-in-1 HFM connector, and the first RF connection module 101 can connect 4 RF signals at the same time.

[0126] The output ends of the first RF connector 1011 , the second RF connector 1012 , the third RF connector 1013 and the fourth RF connector 1014 are all used to connect RF cables. The first RF connector 1011 is also connected to the multi-band mixer 102 .

[0127] The input end of the second RF connector 1012 is connected to the output end of the first receiving path 1032 , the input end of the third RF connector 1013 is connected to the output end of the second receiving path 1033 , and the input end of the fourth RF connector 1014 is connected to the output end of the third receiving path 1034 .

[0128] As an optional implementation, Figure 5 For a structural diagram of the fourth cellular antenna compensation device provided in this application, see Figure 5 In the cellular antenna compensation device 10 provided in the embodiment of the present application, the first receiving path 1032 includes: a second electronic attenuator 321 and a second noise amplifier 322, the second receiving path 1033 includes: a third electronic attenuator 331 and a third noise amplifier 332, and the third receiving path 1034 includes: a fourth electronic attenuator 341 and a fourth noise amplifier 342.

[0129] The input end of the second noise amplifier 322 is connected to the second RF connection module 106, the output end of the second noise amplifier 322 is connected to the input end of the second electronic attenuator 321, the output end of the second electronic attenuator 321 is connected to the input end of the second RF connector 1012, and the control end of the second electronic attenuator 321 is connected to the main controller 105.

[0130] Optionally, the second noise amplifier 322 is implemented by a wide-band low-noise amplifier. The second noise amplifier 322 can be implemented by a 1700-6000MHz low-noise amplifier or a 600-6000MHz low-noise amplifier. The second noise amplifier 322 is used to amplify the small signal received by the antenna 2.

[0131] Optionally, the second electronic attenuator 321 is used to attenuate the RF signal amplified by the second noise amplifier 322 according to the circuit requirements of the cellular antenna compensation device 10. The second electronic attenuator 321 can be implemented using an attenuator of 0.25dB-32dB, which is not specifically limited in this application.

[0132] Optionally, the main controller 105 adjusts the attenuation ratio of the second electronic attenuator 321 according to the pre-measured RF line loss corresponding to the RF cable and the real-time working environment temperature of the cellular antenna compensation device 10 .

[0133] The input end of the third noise amplifier 332 is connected to the second RF connection module 106, the output end of the third noise amplifier 332 is connected to the input end of the third electronic attenuator 331, the output end of the third electronic attenuator 331 is connected to the input end of the third RF connector 1013, and the control end of the third electronic attenuator 331 is connected to the main controller 105.

[0134] Optionally, the third noise amplifier 332 is implemented by a wide-band low-noise amplifier. The third noise amplifier 332 can be implemented by a 1700-6000MHz low-noise amplifier or a 600-6000MHz low-noise amplifier. The third noise amplifier 332 is used to amplify the small signal received by the antenna 3.

[0135] Optionally, the third electronic attenuator 331 is used to attenuate the RF signal amplified by the third noise amplifier 332 according to the circuit requirements of the cellular antenna compensation device 10. The third electronic attenuator 331 can be implemented using an attenuator of 0.25dB-32dB, and this application does not make any specific limitations on this.

[0136] Optionally, the main controller 105 adjusts the attenuation ratio of the third electronic attenuator 331 according to the pre-measured RF line loss corresponding to the RF cable and the real-time working environment temperature of the cellular antenna compensation device 10 .

[0137] The input end of the fourth noise amplifier 342 is connected to the second RF connection module 106, the output end of the fourth noise amplifier 342 is connected to the input end of the fourth electronic attenuator 341, the output end of the fourth electronic attenuator 341 is connected to the input end of the fourth RF connector 1014, and the control end of the fourth electronic attenuator 341 is connected to the main controller 105.

[0138] Optionally, the fourth noise amplifier 342 is implemented by a wide-band low-noise amplifier. The fourth noise amplifier 342 can be implemented by a 1700-6000MHz low-noise amplifier or a 600-6000MHz low-noise amplifier. The fourth noise amplifier 342 is used to amplify the small signal received by the antenna 4.

[0139] Optionally, the fourth electronic attenuator 341 is used to attenuate the RF signal amplified by the fourth noise amplifier 342 according to the circuit requirements of the cellular antenna compensation device 10. The fourth electronic attenuator 341 can be implemented using an attenuator of 0.25dB-32dB, and this application does not make any specific limitations on this.

[0140] Optionally, the main controller 105 adjusts the attenuation ratio of the fourth electronic attenuator 341 according to the pre-measured RF line loss corresponding to the RF cable and the real-time working environment temperature of the cellular antenna compensation device 10 .

[0141] As an optional implementation, Figure 6 For a structural diagram of the fifth cellular antenna compensation device provided in this application, see Figure 6 The comparator module 104 in the cellular antenna compensation device 10 provided in the embodiment of the present application is composed of multiple signal comparators, each signal comparator has a different signal detection frequency band, and the signal comparator outputs the corresponding analysis result to the main controller 105 and the transceiver path 1031 based on the detected modulation signal.

[0142] Optionally, the second RF connection module 106 may be implemented by a plurality of RF connectors, and the cellular antenna compensation device 10 is connected to a plurality of antennas via the second RF connection module 106 .

[0143] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0144] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cellular antenna compensation device, characterized in that: include: A first RF connection module, a multi-band mixer, a multi-band path module, a comparator module, a main controller, and a second RF connection module; the multi-band path module includes a transceiver path; The first RF connection module is communicatively connected to the RF cable, the multi-band mixer and the multi-band path module respectively; The multi-band mixer is respectively connected to the input end of the comparator module and the transceiver path in the multi-band path module, and the output end of the comparator module is respectively connected to the main controller and the transceiver path in the multi-band path module, and the comparator module is used to analyze the radio frequency signal sent by the multi-band mixer, select a target transmission channel in the transceiver path based on the analysis result, and output the analysis result to the main controller; The first sampling end and the second sampling end of the multi-band path module are both communicatively connected to the main controller, the output end of the main controller is communicatively connected to the control end of the multi-band path module, the multi-band path module is communicatively connected to the antenna via the second RF connection module, and the main controller is used to adjust the target transmission signal of the target transmission channel according to the preset RF line loss, the first sampling signal of the first sampling end, the second sampling signal of the second sampling end and the analysis result, so that the gain between the input signal and the output signal of the cellular antenna compensation device is constant.

2. The cellular antenna compensation device according to claim 1, characterized in that: The multi-band channel module further includes: a first receiving channel, a second receiving channel and a third receiving channel; The transceiver path is connected to the output end of the comparator module and the multi-band mixer respectively, and the transceiver path is also connected to the antenna through the second RF connection module, and the transceiver path has the first sampling end and the second sampling end; The input end of the first receiving path, the input end of the second receiving path, and the input end of the third receiving path are all communicatively connected to the antenna via the second RF connection module, and the output end of the first receiving path, the output end of the second receiving path, and the output end of the third receiving path are all connected to the first RF connection module.

3. The cellular antenna compensation device according to claim 1, characterized in that: The transceiver path includes: a first sampling circuit, a first RF frequency divider, a first electronic attenuator, a first RF switch, an amplification module, a second RF switch, a second RF frequency divider and a second sampling circuit; The input end of the first sampling circuit is connected to the multi-band mixer and the first radio frequency divider respectively, and the first radio frequency divider is also connected to the first electronic attenuator and the second radio frequency divider; The first RF switch is connected to the output ends of the first electronic attenuator, the amplifying module and the comparator module respectively, and the second RF switch is connected to the output ends of the amplifying module, the second RF frequency divider and the comparator module respectively; The input end of the second sampling circuit is connected to the second RF frequency divider and the second RF connection module respectively, and the output end of the first sampling circuit and the output end of the second sampling circuit are both connected to the main controller; The main controller is also connected to the control end of the first electronic attenuator, and the main controller is specifically used to adjust the attenuation ratio of the first electronic attenuator according to the preset RF line loss, the first sampling signal, the second sampling signal and the analysis result.

4. The cellular antenna compensation device according to claim 3, characterized in that: The amplification module includes: a first power amplifier, a second power amplifier, a third power amplifier and a first noise amplifier; The input end of the first RF switch is connected to the output end of the first noise amplifier, and the output end of the first RF switch is respectively connected to the input end of the first power amplifier, the input end of the second power amplifier, and the input end of the third power amplifier; The input end of the second RF switch is respectively connected to the output end of the first power amplifier, the output end of the second power amplifier and the output end of the third power amplifier, and the output end of the second RF switch is connected to the input end of the first noise amplifier.

5. The cellular antenna compensation device according to claim 3, characterized in that: The first sampling circuit includes: a first radio frequency coupler, a first detector and a first amplifier; The input end of the first RF coupler is connected to the multi-band mixer and the first RF divider respectively, and the output end of the first RF coupler is connected to the input end of the first detector; The output end of the first detector is connected to the input end of the first amplifier, and the output end of the first amplifier is connected to the main controller.

6. The cellular antenna compensation device according to claim 3, characterized in that: The second sampling circuit includes: a second radio frequency coupler, a second detector and a second amplifier; The input end of the second RF coupler is connected to the second RF frequency divider and the second RF connection module respectively, and the output end of the second RF coupler is connected to the input end of the second detector; The output end of the second detector is connected to the input end of the second amplifier, and the output end of the second amplifier is connected to the main controller.

7. The cellular antenna compensation device according to claim 2, characterized in that: The first RF connection module includes: a first RF connector, a second RF connector, a third RF connector and a fourth RF connector; The output ends of the first RF connector, the second RF connector, the third RF connector and the fourth RF connector are all used to connect RF cables, and the first RF connector is also connected to the multi-band mixer; The input end of the second RF connector is connected to the output end of the first receiving path, the input end of the third RF connector is connected to the output end of the second receiving path, and the input end of the fourth RF connector is connected to the output end of the third receiving path.

8. The cellular antenna compensation device according to claim 7, characterized in that: The first receiving path includes: a second electronic attenuator and a second noise amplifier; The input end of the second noise amplifier is connected to the second RF connection module, the output end of the second noise amplifier is connected to the input end of the second electronic attenuator, the output end of the second electronic attenuator is connected to the input end of the second RF connector, and the control end of the second electronic attenuator is connected to the main controller.

9. The cellular antenna compensation device according to claim 7, characterized in that: The second receiving path includes: a third electronic attenuator and a third noise amplifier; The input end of the third noise amplifier is connected to the second RF connection module, the output end of the third noise amplifier is connected to the input end of the third electronic attenuator, the output end of the third electronic attenuator is connected to the input end of the third RF connector, and the control end of the third electronic attenuator is connected to the main controller.

10. The cellular antenna compensation device according to claim 7, characterized in that: The third receiving path includes: a fourth electronic attenuator and a fourth noise amplifier; The input end of the fourth noise amplifier is connected to the second RF connection module, the output end of the fourth noise amplifier is connected to the input end of the fourth electronic attenuator, the output end of the fourth electronic attenuator is connected to the input end of the fourth RF connector, and the control end of the fourth electronic attenuator is connected to the main controller.

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