Wireless radio frequency receiving equipment and control method thereof

Abstract

The invention discloses a wireless radio frequency receiving device and a control method thereof, the device comprises a signal transmission link (10), the signal transmission link (10) comprises a radio frequency front-end chip (101) and a radio frequency transceiver chip (102) which are connected in series, the radio frequency front-end chip (101) is used for converting a received wireless signal into an analog electric signal, and the analog electric signal is used for transmitting the analog electric signal to the radio frequency transceiver chip (102); the radio frequency transceiver chip (102) is used for receiving the analog electric signal, amplifying and filtering the analog electric signal, and converting the analog electric signal into a digital electric signal; the at least two detection chips (20) are respectively accessed to the signal transmission links, and the detection chips (20) are used for detecting signal parameters in the series links; and a gain controller (30), the gain controller (30) is connected between the output end of the detection chip (20) and the radio frequency front-end chip (101), and the gain controller (30) is used for adjusting the gain coefficient of the radio frequency front-end chip according to the signal parameter.

Description

A wireless radio frequency receiving device and a control method thereof

[0001] The present disclosure relates to the field of wireless communications, and in particular to a wireless radio frequency receiving device and a control method thereof.

[0002] In the related art, wireless RF receiving devices usually perform power control based on the strength of analog signals input from the RF end. However, in wireless RF receiving devices, input signals, especially wireless signals, have unstable spatial interference signals. When power control is performed directly based on the input signals, the final effective bandwidth signal strength obtained may be unstable or low, which affects other operations such as digital signal processing after analog signal and digital signal conversion, resulting in a large gain control accuracy error of the output digital signal.

[0003]

[0004] In order to solve the problems of unstable effective bandwidth signal strength and low signal strength of a wireless radio frequency receiving device and large digital signal gain control accuracy error, the first aspect of the present disclosure proposes a wireless radio frequency receiving device, comprising:

[0005] A signal transmission link, wherein the signal transmission link comprises a radio frequency front-end chip and a radio frequency transceiver chip connected in series, wherein the radio frequency front-end chip is used to convert the received wireless signal into an analog electrical signal, and amplify and filter the analog electrical signal, and the radio frequency transceiver chip is used to convert the analog electrical signal into a digital electrical signal;

[0006] at least two detection chips, respectively connected to the above signal transmission link, the above detection chips are used to detect signal parameters in the above series link; and,

[0007] A gain controller is connected between the output end of the detection chip and the RF front-end chip, and is used to adjust the gain coefficient of the RF front-end chip according to the signal parameter.

[0008] In one embodiment, connection points between at least two of the detection chips and the signal transmission link are different.

[0009] In one embodiment, the signal transmission link includes a digital filter chip, which is connected to the radio frequency transceiver chip, and the digital filter chip is used to filter the digital electrical signal.

[0010] In one embodiment, an input terminal of at least one of the detection chips is electrically connected between the RF front-end chip and the RF transceiver chip;

[0011] An input terminal of at least one of the detection chips is electrically connected between the RF transceiver chip and the digital filter chip;

[0012] An input terminal of at least one of the detection chips is electrically connected to an output terminal of the digital filter.

[0013] In one embodiment, it further includes:

[0014] A digital gain control chip, wherein the input end of the digital gain control chip is connected to the output end of the digital filter chip;

[0015] At least one of the detection chips is connected to the output end of the digital gain control chip;

[0016] The output end of the gain controller is connected to the digital gain control chip.

[0017] In one embodiment, the detection chip is an amplitude detection chip and / or a power detection chip.

[0018] In one implementation, the gain coefficient corresponding to the digital gain control chip is smaller than the gain coefficient corresponding to the RF front-end chip.

[0019] In one embodiment, it further includes:

[0020] An antenna, connected to the RF front-end chip, and used to receive the wireless signal;

[0021] A baseband chip, where the wireless radio frequency receiving device includes a digital gain control chip, the baseband chip is connected to the digital gain control chip; or,

[0022] In the case where the wireless radio frequency receiving device includes a digital filter chip but does not include the digital gain control chip, the baseband chip is connected to the digital filter chip; or,

[0023] In the case where the wireless radio frequency receiving device does not include the digital filter chip and the digital gain control chip, the baseband chip is connected to the radio frequency transceiver chip;

[0024] The baseband chip is used to convert the format and interface of the filtered digital signal.

[0025] In one embodiment, it further includes:

[0026] A baseband chip, the input end of the baseband chip is connected to the output end of the RF transceiver chip, and the baseband chip is used to convert the format and interface of the filtered digital signal;

[0027] A field programmable gate array, the field programmable gate array comprises a gain association interface, a digital signal interface and a signal parameter reading interface, the gain association interface is connected to the RF front-end chip, the digital signal interface is connected to the output end of the baseband chip, the signal parameter reading interface is used to connect to the detection chip, the field programmable gate array is used to filter the digital electrical signal, and the field programmable gate array is also used to adjust the gain coefficient of the RF front-end chip according to the signal parameters before digital filtering and the signal parameters after digital filtering.

[0028] A second aspect of the present disclosure provides a control method, which is used for the wireless radio frequency receiving device according to any one of the first aspects, comprising:

[0029] Controlling the detection chip to obtain the signal parameters in the signal transmission link;

[0030] controlling the gain controller to generate a gain adjustment signal according to the signal parameter and the signal target threshold,

[0031] The RF front-end chip is controlled to adjust the gain coefficient according to the gain adjustment signal so that the difference between the signal strength output by the wireless RF receiving device and the target strength is within a preset range.

[0032] In one embodiment, when the wireless radio frequency receiving device includes a digital filter chip,

[0033] The above method further includes:

[0034] Control at least two of the above-mentioned detection chips to respectively obtain signal parameters of different positions of the correspondingly connected signal transmission links, wherein the above-mentioned signal parameters include a first signal parameter, a second signal parameter and a third signal parameter, the above-mentioned first signal parameter is a signal parameter between the above-mentioned RF front-end chip and the above-mentioned RF transceiver chip, the above-mentioned second signal parameter is a signal parameter between the above-mentioned RF transceiver chip and the above-mentioned digital filter chip, and the above-mentioned third signal parameter is a signal parameter output by the above-mentioned digital filter output end;

[0035] Generate multiple gain adjustment signals according to different signal parameters and different target thresholds, wherein the gain adjustment signals include a first gain adjustment signal, a second gain adjustment signal and a third gain adjustment signal, the first gain adjustment signal corresponds to the first signal parameter, the second gain adjustment signal corresponds to the second signal parameter, and the third gain adjustment signal corresponds to the third signal parameter;

[0036] The RF front-end chip is controlled to adjust the gain coefficient according to at least one of the first gain adjustment signal, the second gain adjustment signal and the third gain adjustment signal, so that the strength difference between the signal strength output by the wireless RF receiving device and the target strength is within a preset range.

[0037] In one embodiment, the above method further comprises:

[0038] The RF front-end chip is controlled to adjust the gain coefficient according to the first gain adjustment signal, the second gain adjustment signal and the third gain adjustment signal in sequence, so that the difference between the signal strength output by the wireless RF receiving device and the target strength is within the preset range.

[0039] In one implementation, when the wireless radio frequency receiving device includes a digital gain control chip,

[0040] The above method further includes:

[0041] Generate a digital gain adjustment signal according to different signal parameters and different target thresholds;

[0042] The gain coefficient corresponding to the digital gain control chip is adjusted according to the digital gain adjustment signal so that the difference between the signal strength output by the wireless radio frequency receiving device and the target strength is within a preset range.

[0043] In an implementation method, the gain coefficient corresponding to the above-mentioned digital gain control chip is smaller than the gain coefficient corresponding to the above-mentioned RF front-end chip.

[0044] In one embodiment, when the wireless radio frequency receiving device comprises a field programmable gate array,

[0045] The above methods include:

[0046] Controlling the programmable gate array to filter the digital electrical signal;

[0047] The programmable gate array is controlled to adjust the gain coefficient of the radio frequency front-end chip according to the signal parameters before digital filtering and the signal parameters after digital filtering.

[0048] FIG1 shows a schematic structural diagram of a wireless radio frequency receiving device according to an embodiment of the present disclosure;

[0049] FIG2 shows a schematic structural diagram of a wireless radio frequency receiving device according to another embodiment of the present disclosure;

[0050] FIG3 shows a schematic structural diagram of a wireless radio frequency receiving device according to another embodiment of the present disclosure;

[0051] FIG4 shows a schematic structural diagram of a wireless radio frequency receiving device according to another embodiment of the present disclosure;

[0052] FIG5 shows a schematic structural diagram of a wireless radio frequency receiving device according to another embodiment of the present disclosure;

[0053] FIG6 is a schematic flow chart showing a control method of a wireless radio frequency receiving device according to an embodiment of the present disclosure.

[0054] The first aspect of the present disclosure provides a wireless radio frequency receiving device. Please refer to FIG1 , which is a structural schematic diagram of a wireless radio frequency receiving device according to an embodiment of the present disclosure, including:

[0055] The signal transmission link 10 includes a radio frequency front-end chip 101 and a radio frequency transceiver chip 102 connected in series. The radio frequency front-end chip 101 is used to convert the received wireless signal into an analog electrical signal, and amplify and filter the analog electrical signal. The radio frequency transceiver chip 102 is used to convert the analog electrical signal into a digital electrical signal.

[0056] At least two detection chips 20 are respectively connected to the signal transmission link 10, and the detection chips 20 are used to detect signal parameters in the series link; and

[0057] The gain controller 30 is connected between the output end of the detection chip 20 and the RF front-end chip 101. The gain controller 30 is used to adjust the gain coefficient of the RF front-end chip 101 according to the signal parameter.

[0058] Exemplarily, as shown in FIG1 , the RF front-end chip 101 and the RF transceiver chip 102 are electrically connected to form a signal transmission link 10. The RF front-end chip 101 refers to a chip located at the front end of a wireless RF receiving device, which is mainly responsible for amplifying, filtering, modulating, and other operations of the RF signal. The RF transceiver chip 102 integrates RF receiving and transmitting circuits, which can receive RF signals from the antenna and convert them into baseband signals, and then send the baseband signals to the baseband processor for further processing. At the same time, it can also convert baseband signals into RF signals and send them to the antenna to achieve two-way communication in the wireless communication system.

[0059] At least two detection chips 20 are connected in the signal transmission link 10. The detection chip 20 is used to measure the signal parameters in the transmission link. The signal parameters may include signal strength and signal amplitude. It should be noted that at least two detection chips 20 can be connected at the same connection point (this method is not shown in the figure), or connected at different connection points, so as to obtain multiple signal parameters.

[0060] The detection chip 20 is connected to the gain controller 30, and the gain controller 30 is connected to the RF front-end chip 101. The gain controller 30 compares the signal parameter obtained by the detection chip 20 with the target threshold and generates a gain adjustment signal according to the comparison result. The RF front-end chip 101 adjusts the gain coefficient according to the gain adjustment signal, thereby adjusting the signal strength output by the RF gain receiving device so that the difference between the signal strength and the target strength is within a preset range, meeting the control accuracy requirement.

[0061] In summary, the wireless RF receiving device proposed in the present invention measures multiple signal parameters by at least two detection chips 20 connected to at least one transmission link, and compares the multiple signal parameters with the target threshold value, generates multiple gain adjustment signals according to the multiple comparison results, and gradually adjusts the gain coefficient through the multiple gain adjustment signals. The gain coefficient is gradually adjusted through multiple signal parameters, which overcomes the technical problem in the related art that the bandwidth signal strength cannot meet the preset requirements when the control is directly based on the input signal, can effectively improve the accuracy of gain control, and can output an effective digital signal with more stable strength.

[0062] In one embodiment, the connection points between at least two of the detection chips 20 and the signal transmission link 10 are different.

[0063] Exemplarily, as shown in FIG1 , a detection chip 20 can be connected to the RF front-end chip 101 and the RF transceiver chip 102 to measure the analog signal strength, which may include peak value and / or power. The gain of the RF front-end chip 101 is controlled according to the analog signal strength measured by the detection chip 20, and the feedback speed is faster, which can effectively protect the electronic devices in the RF receiving device and prevent the analog signal power or peak value from exceeding the RF period tolerance. Another detection chip 20 can be connected after the RF front-end chip 101 to measure the strength of the digital signal, which may include the power of the digital signal. By measuring the power of the digital signal, the measurement result is more accurate, and the gain of the RF front-end chip 101 is adjusted by the digital signal power, which can further improve the accuracy of the gain control.

[0064] In summary, the RF receiving device provided in the embodiment of the present disclosure can measure the strength of multiple different types of signals through at least two detection chips 20 connected to different connection points in the signal transmission link 10, thereby making hierarchical control and adjustment of the gain of the RF receiving device according to the strength of different types of signals, which can effectively improve the safety of use of the RF receiving device and the accuracy of gain control.

[0065] In one implementation, the signal transmission link 10 includes a digital filter chip 40 , which is connected to the RF transceiver chip 102 , and is used to filter the digital electrical signal.

[0066] Exemplarily, as shown in FIG2 , it is a structural schematic diagram of another radio frequency receiving device provided by the present disclosure. The signal transmission link 10 also includes a digital filter chip 40, and the digital filter chip 40 is connected to the output end of the radio frequency transceiver chip 102. The digital filter chip 40 is mainly used for filtering, denoising or spectrum analysis of digital signals. The digital filter chip 40 can process signals quickly in real-time applications, and has the characteristics of high speed, precision and programmability. The digital filter chip 40 is usually composed of an analog front end, a digital signal processor (DSP) and a control interface.

[0067] In one embodiment, an input terminal of at least one of the detection chips 20 is electrically connected between the RF front-end chip 101 and the RF transceiver chip 102;

[0068] An input terminal of at least one of the detection chips 20 is electrically connected between the RF transceiver chip 102 and the digital filter chip 40;

[0069] An input terminal of at least one of the detection chips 20 is electrically connected to an output terminal of the digital filter chip 40 .

[0070] Exemplarily, as shown in FIG2 , an input end of a detection chip 20 can be connected to the RF front-end chip 101 and the RF transceiver chip 102 for measuring the strength of the analog signal, and the strength of the analog signal can include peak value and / or power. The gain of the RF front-end chip 101 is controlled according to the strength of the analog signal measured by the detection chip 20, and the feedback speed is faster, which can effectively protect the electronic devices in the RF receiving device and prevent the power or peak value of the analog signal from exceeding the RF period tolerance. The input end of another detection chip 20 can be connected after the RF front-end chip 101 to measure the strength of the digital signal, and the strength of the digital signal can include the power of the digital signal. By measuring the power of the digital signal, the measurement result is more accurate, and the gain of the RF front-end chip 101 is adjusted by the digital signal power, which can further improve the accuracy of the gain control. The input end of another detection chip 20 can be connected to the output end of the digital filter chip 40, and the detection chip 20 is used to detect the strength of the filtered digital signal. The result of the signal loudness measured by the chip is more accurate, and the gain control is performed according to this measurement result, and its control accuracy is more refined.

[0071] In summary, the RF receiving device proposed in the implementation of the present disclosure measures the signal strength between the RF front-end chip 101 and the RF transceiver chip 102, between the RF transceiver chip 102 and the digital filter chip 40, and at the output end of the digital filter chip 40 in the signal link, and controls the gain control response priorities from high to low according to the three signal strength detections and the corresponding gain control responses. Compared with the RF receiving device in the related art, the RF receiving device can also perform power detection on the effective signal after digital filtering, and perform signal gain control and feedback, and can output an effective digital signal with more stable strength.

[0072] In one embodiment, it further includes:

[0073] A digital gain control chip 70, wherein the input end of the digital gain control chip 70 is connected to the output end of the digital filter chip 40;

[0074] At least one of the detection chips 20 is connected to the output end of the digital gain control chip 70;

[0075] The output end of the gain controller 30 is connected to the digital gain control chip 70 .

[0076] As shown in FIG4 , it is a schematic structural diagram of a wireless RF receiving device according to another embodiment of the present disclosure. The signal transmission link 10 also includes a digital gain control chip 70, the input end of the digital gain control chip 70 is connected to the output end of the digital filter chip 40, and at least one detection chip 20 is connected to the output end of the digital gain control chip 70, which is used to measure the signal strength after the digital gain chip is controlled. In addition, the RF receiving device may also include two other detection chips 20, one of which is used to measure the analog signal strength after the RF front-end chip 101, and the other detection chip 20 is used to measure the digital signal strength after the RF transceiver chip 102. The output end of the gain controller 30 is connected to the RF front-end chip 101 and the digital gain control chip 70 at the same time. According to the three different types of signal strengths measured by the three detection chips 20, the gain coefficients of the RF front-end chip 101 and the digital gain control chip 70 are controlled respectively, thereby adjusting the signal strength output in the signal output link.

[0077] In summary, in the RF receiving device proposed in the embodiments of the present disclosure, the gains in the RF front-end chip 101 and the digital gain control chip 70 are controlled respectively through three different types of signal strengths, and the accuracy of gain control can be further improved through coordinated control of the larger gain at the front end and the smaller gain at the back end.

[0078] In one implementation, the detection chip 20 is an amplitude detection chip 20 and / or a power detection chip 20 .

[0079] Exemplarily, the amplitude detection chip 20 is used to measure the amplitude of the signal, that is, the amplitude of the signal. It can sample and process the input signal, calculate the amplitude of the signal, and output the corresponding amplitude information. The power detection chip 20 is mainly used to measure the power of the signal, that is, the energy of the signal. It can sample and process the input signal, calculate the power value of the signal, and output the corresponding power information. The signal strength at different nodes in the signal link can be more accurately obtained by cooperating with amplitude detection and power detection.

[0080] In one implementation, the gain coefficient corresponding to the digital gain control chip 70 is smaller than the gain coefficient corresponding to the RF front-end chip 101 .

[0081] Exemplarily, the gain coefficient corresponding to the digital gain control chip 70 is smaller than the gain coefficient corresponding to the RF front-end chip 101. The accuracy of gain control is further improved through coordinated control of a larger front-end gain and a smaller back-end gain.

[0082] In one embodiment, it further includes:

[0083] An antenna 50, connected to the RF front-end chip 101, and used to receive the wireless signal;

[0084] The baseband chip 60 is connected to the digital gain control chip 70 when the wireless radio frequency receiving device includes the digital gain control chip 70; or

[0085] In the case where the wireless RF receiving device includes the digital filter chip 40 but does not include the digital gain control chip 70, the baseband chip 60 is connected to the digital filter chip 40; or,

[0086] In the case where the wireless RF receiving device does not include the digital filter chip 40 and the digital gain control chip 70, the baseband chip 60 is connected to the RF transceiver chip 102;

[0087] The baseband chip 60 is used to convert the format and interface of the filtered digital signal.

[0088] Exemplarily, the antenna 50 is a device for transmitting and receiving electromagnetic waves, and is mainly used to convert electromagnetic waves into electrical signals in a receiving mode, or to convert electrical signals into electromagnetic waves in a transmitting mode. The antenna 50 is responsible for receiving wireless signals from a base station or other devices in a wireless communication system.

[0089] The baseband chip 60 is a chip responsible for processing baseband signals in the wireless communication system. Baseband signals refer to unmodulated low-frequency signals, which contain information such as audio, video, and data. The baseband chip 60 is mainly responsible for modulating, demodulating, encoding, decoding, and modulating the baseband signals, and converting the formats and interfaces of the filtered digital signals.

[0090] As shown in FIG. 4 , in the case where the wireless radio frequency receiving device includes a digital gain control chip 70 , the baseband chip 60 is connected to the digital gain control chip 70 ;

[0091] As shown in FIG3 , it is a structural schematic diagram of another RF receiving device proposed in the present disclosure. In the case where the wireless RF receiving device includes a digital filter chip 40 but does not include the digital gain control chip 70 , the baseband chip 60 is connected to the digital filter chip 40 ; or,

[0092] As shown in FIG1 , it is a schematic diagram of the device structure corresponding to the case where the wireless RF receiving device does not include the digital filter chip 40 and the digital gain control chip 70. In this device structure, the baseband chip 60 is connected to the RF transceiver chip 102, and the structure does not have the digital filter chip 40, and the structure is simpler.

[0093] In one embodiment, it further includes:

[0094] A baseband chip 60, the input end of the baseband chip 60 is connected to the output end of the RF transceiver chip 102, and the baseband chip 60 is used to convert the format and interface of the filtered digital signal;

[0095] The field programmable gate array 80 includes a gain association interface, a digital signal interface and a signal parameter reading interface. The gain association interface is connected to the RF front-end chip 101. The digital signal interface is connected to the output end of the baseband chip 60. The signal parameter reading interface is used to connect to the detection chip 20. The field programmable gate array 80 is used to filter the digital electrical signal. The field programmable gate array 80 is also used to adjust the gain coefficient of the RF front-end chip 101 according to the signal parameters before digital filtering and the signal parameters after digital filtering.

[0096] Exemplarily, a field programmable gate array 80 (Field-Programmable Gate Array, FPGA) is a reconfigurable integrated circuit chip. Compared with traditional fixed-function integrated circuits, FPGA has programmability and can be configured and reconfigured according to user needs to implement specific functions and logic circuits. As shown in FIG5, a structural schematic diagram of another radio frequency transceiver device proposed in the present disclosure is shown. The field programmable gate array 80 includes a gain association interface 801, a digital signal interface 802, and a signal parameter reading interface 803. At the same time, the field editable gate array 80 also includes a digital filtering module 804, a power detection module 805, and a gain control module 806. The gain association interface 801 is connected to the RF front-end chip 101, the digital signal interface 802 is connected to the output end of the baseband chip 60, the signal parameter reading interface 803 is used to connect to the detection chip 20, the digital filter module 804 of the field programmable gate array 80 is used to filter the digital electrical signal, the power detection module 805 of the field programmable gate array 80 is used to measure the strength of the digital electrical signal after filtering, and the gain control module 806 of the field programmable gate array 80 is used to adjust the gain coefficient of the RF front-end chip 101 according to the signal parameters before digital filtering and the signal parameters after digital filtering. The signal parameters before digital filtering can include one or more of the analog signal strength after the RF front-end chip 101 and the digital signal strength after the RF transceiver chip 102.

[0097] In summary, the RF receiving device proposed in the embodiment of the present disclosure implements digital filtering and signal power detection by programming in FPGA. The FPGA is connected to the front-end electronic devices through the gain association interface, the digital signal interface and the signal parameter reading interface. This structural design can simplify the structure of the RF transceiver equipment, optimize the product size, reduce the cost, and implement this function in FPGA more flexibly and with faster response.

[0098] In a second aspect of the present disclosure, a control method is proposed. Please refer to FIG. 6, which shows a flow chart of a control method of a wireless radio frequency receiving device according to an embodiment of the present disclosure, and is used for any of the wireless radio frequency receiving devices mentioned above in the first aspect, including:

[0099] S110, controlling the detection chip 20 to obtain signal parameters in the signal transmission link;

[0100] S120, controlling the gain controller 30 to generate a gain adjustment signal according to the signal parameter and the signal target threshold;

[0101] S130, controlling the RF front-end chip 101 to adjust the gain coefficient according to the gain adjustment signal, so that the difference between the signal strength output by the wireless RF receiving device and the target strength is within a preset range.

[0102] Exemplarily, as shown in FIG1 , at least two detection chips 20 are connected in the signal transmission link 10, and the detection chip 20 is used to measure the signal parameters in the transmission link, and the signal parameters may include signal strength and signal amplitude. It should be noted that at least two detection chips 20 can be connected at the same connection point (this method is not shown in the figure), or connected at different connection points, so as to obtain multiple signal parameters. The detection chip 20 is connected to the gain controller 30, and the gain controller 30 is connected to the RF front-end chip 101. The gain controller 30 compares the signal parameters obtained by the detection chip 20 with the target threshold, and generates a gain adjustment signal according to the comparison result. The RF front-end chip 101 adjusts the gain coefficient according to the gain adjustment signal, thereby adjusting the signal strength output by the RF gain receiving device so that the difference between it and the target strength is within a preset range, meeting the control accuracy requirement.

[0103] In summary, through the control method of the wireless RF receiving device proposed in the present invention, at least two detection chips 20 are connected to at least one transmission link, multiple signal parameters are measured, and comparison is made based on the multiple signal parameters and the target threshold value, and multiple gain adjustment signals are generated according to the multiple comparison results. The gain coefficient is gradually adjusted by the multiple gain adjustment signals, and the gain coefficient is gradually adjusted by the multiple signal parameters. The technical problem that the bandwidth signal strength cannot meet the preset requirements when the control is directly performed according to the input signal in the related art is overcome, the accuracy of the gain control can be effectively improved, and an effective digital signal with more stable strength can be output.

[0104] In one embodiment, when the wireless radio frequency receiving device includes a digital filter chip 40,

[0105] The above method further includes:

[0106] Control at least two of the above-mentioned detection chips 20 to respectively obtain signal parameters of different positions of the correspondingly connected signal transmission link 10, wherein the above-mentioned signal parameters include a first signal parameter, a second signal parameter and a third signal parameter, the above-mentioned first signal parameter is a signal parameter between the above-mentioned RF front-end chip 101 and the above-mentioned RF transceiver chip 102, the above-mentioned second signal parameter is a signal parameter between the above-mentioned RF transceiver chip 102 and the above-mentioned digital filter chip 40, and the above-mentioned third signal parameter is a signal parameter output by the above-mentioned digital filter output end;

[0107] Generate multiple gain adjustment signals according to different signal parameters and different target thresholds, wherein the gain adjustment signals include a first gain adjustment signal, a second gain adjustment signal and a third gain adjustment signal, the first gain adjustment signal corresponds to the first signal parameter, the second gain adjustment signal corresponds to the second signal parameter, and the third gain adjustment signal corresponds to the third signal parameter;

[0108] The RF front-end chip 101 is controlled to adjust the gain coefficient according to at least one of the first gain adjustment signal, the second gain adjustment signal and the third gain adjustment signal, so that the strength difference between the signal strength output by the wireless RF receiving device and the target strength is within a preset range.

[0109] Exemplarily, in the RF transceiver device shown in FIG2 , an input end of a detection chip 20 can be connected to the RF front-end chip 101 and the RF transceiver chip 102 to measure the analog signal strength, that is, the first signal parameter, and the analog signal strength may include a peak value and / or power. The input end of another detection chip 20 can be connected after the RF front-end chip 101 to measure the strength of the digital signal, that is, the second signal parameter, and the strength of the digital signal may include the power of the digital signal. The input end of another detection chip 20 can be connected to the output end of the digital filter chip 40, and the detection chip 20 is used to detect the strength of the filtered digital signal, that is, the third signal parameter.

[0110] By comparing the first signal parameter with the first target threshold, a first gain adjustment signal is generated. The gain of the RF front-end chip 101 is adjusted according to the first gain adjustment signal. The feedback speed is faster, which can effectively protect the electronic devices in the RF receiving device and prevent the analog signal power or peak value from exceeding the RF period tolerance. By comparing the second signal parameter with the second target threshold, a second gain adjustment signal is generated. The gain of the RF front-end chip 101 is adjusted according to the second gain adjustment signal. By measuring the power of the digital signal, the measurement result is more accurate. By adjusting the gain of the RF front-end chip 101 according to the digital signal power, the accuracy of gain control can be further improved. By comparing the third signal parameter with the third target threshold, a third gain adjustment signal is generated. The gain of the RF front-end chip 101 is adjusted according to the third gain adjustment signal. The result of the signal loudness measured by the chip is more accurate. Gain control is performed according to this measurement result, and its control accuracy is more refined.

[0111] In summary, the control method of the RF receiving device proposed in the implementation of the present disclosure measures the signal strength between the RF front-end chip 101 and the RF transceiver chip 102, between the RF transceiver chip 102 and the digital filter chip 40, and at the output end of the digital filter chip 40 in the signal link, and detects the signal strength at the three locations.

[0112] As a result, one or more types of gain coefficients are selected to control the gain coefficients, and the feedback speed, adjustment accuracy, etc. of the gain coefficient adjustment can be flexibly controlled according to different application environments and different control requirements.

[0113] In one embodiment, the above method further comprises:

[0114] The RF front-end chip is controlled to adjust the gain coefficient according to the first gain adjustment signal, the second gain adjustment signal and the third gain adjustment signal in sequence, so that the difference between the signal strength output by the wireless RF receiving device and the target strength is within the preset range.

[0115] Exemplarily, a first gain adjustment signal is generated by comparing the first signal parameter with the first target threshold, and the gain of the RF front-end chip 101 is adjusted according to the first gain adjustment signal. The feedback speed is faster, which can effectively protect the electronic devices in the RF receiving device and prevent the analog signal power or peak value from exceeding the RF period tolerance. A second gain adjustment signal is generated by comparing the second signal parameter with the second target threshold, and the gain of the RF front-end chip 101 is adjusted according to the second gain adjustment signal. By measuring the power of the digital signal, the measurement result is more accurate. By adjusting the gain of the RF front-end chip 101 according to the digital signal power, the accuracy of gain control can be further improved. A third gain adjustment signal is generated by comparing the third signal parameter with the third target threshold, and the gain of the RF front-end chip 101 is adjusted according to the third gain adjustment signal. The result of the signal loudness measured by the chip is more accurate, and the gain control is performed according to this measurement result, and its control accuracy is more refined.

[0116] In summary, the control method of the RF receiving device proposed in the implementation of this application measures the signal strength between the RF front-end chip 101 and the RF transceiver chip 102, between the RF transceiver chip 102 and the digital filter chip 40, and at the output end of the digital filter chip 40 in the signal link, and controls from high to low according to the three signal strength detections and the corresponding gain control response priorities. Compared with the RF receiving device in the related art, the RF receiving device can also perform power detection on the effective signal after digital filtering, and perform signal gain control and feedback, and can output an effective digital signal with more stable strength.

[0117] In one implementation, when the wireless radio frequency receiving device includes a digital gain control chip 70,

[0118] The above method further includes:

[0119] Generate a digital gain adjustment signal according to different signal parameters and different target thresholds;

[0120] The gain coefficient corresponding to the digital gain control chip 70 is adjusted according to the digital gain adjustment signal, so that the difference between the signal strength output by the wireless radio frequency receiving device and the target strength is within a preset range.

[0121] Exemplarily, as shown in FIG4 , the signal transmission link 10 also includes a digital gain control chip 70, the input end of the digital gain control chip 70 is connected to the output end of the digital filter chip 40, at least one detection chip 20 is connected to the output end of the digital gain control chip 70, and is used to measure the signal strength after the digital gain chip is controlled. In addition, the RF receiving device may also include other two detection chips 20, one of which is used to measure the analog signal strength after the RF front-end chip 101, and the other detection chip 20 is used to measure the digital signal strength after the RF transceiver chip 102. The output end of the gain controller 30 is connected to the RF front-end chip 101 and the digital gain control chip 70 at the same time, and the gain coefficients of the RF front-end chip 101 and the digital gain control chip 70 are controlled respectively according to the three different types of signal strengths measured by the three detection chips 20, thereby adjusting the signal strength output in the signal output link.

[0122] In some implementations, the gain coefficient corresponding to the digital gain control chip 70 is smaller than the gain coefficient corresponding to the RF front-end chip 101 .

[0123] Exemplarily, the gain coefficient corresponding to the digital gain control chip 70 is smaller than the gain coefficient corresponding to the RF front-end chip 101. The accuracy of gain control is further improved through coordinated control of a larger front-end gain and a smaller back-end gain.

[0124] In summary, the control method of the RF receiving device proposed in the embodiment of the present disclosure controls the gain in the RF front-end chip 101 and the digital gain control chip 70 respectively through three different types of signal strengths, and can further improve the accuracy of gain control through coordinated control of the larger gain at the front end and the smaller gain at the back end.

[0125] In one embodiment, when the wireless radio frequency receiving device includes a field programmable gate array 80,

[0126] The above methods include:

[0127] Controlling the programmable gate array to filter the digital electrical signal;

[0128] The programmable gate array is controlled to adjust the gain coefficient of the RF front-end chip 101 according to the signal parameters before digital filtering and the signal parameters after digital filtering.

[0129] As shown in FIG5 , it is a structural schematic diagram of another RF transceiver device proposed in the present disclosure. The field programmable gate array 80 includes a gain association interface, a digital signal interface and a signal parameter reading interface. The field programmable gate array also includes a digital filter module 804, a power detection module 805 and a gain control module 806. The gain association interface is connected to the RF front-end chip 101, the digital signal interface is connected to the output end of the baseband chip 60, the signal parameter reading interface is used to connect to the detection chip 20, the digital filter module 804 of the field programmable gate array 80 is used to filter the digital electrical signal, the power detection module 805 of the field programmable gate array 80 is used to measure the strength of the digital electrical signal after filtering, and the gain control module 806 of the field programmable gate array is used to adjust the gain coefficient of the RF front-end chip 101 according to the signal parameters before digital filtering and the signal parameters after digital filtering. The signal parameters before digital filtering can include one or more of the analog signal strength after the RF front-end chip 101 and the digital signal strength after the RF transceiver chip 102.

[0130] In summary, the control method of the RF receiving device proposed in the embodiment of the present disclosure implements digital filtering and signal power detection by programming in FPGA. The FPGA is connected to the front-end electronic devices through the gain association interface, the digital signal interface and the signal parameter reading interface. This structural design can simplify the structure of the RF transceiver equipment, optimize the product size, reduce the cost, and implement this function in FPGA more flexibly and with faster response.

[0131] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0132] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0133] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0134] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

A wireless radio frequency receiving device, comprising: A signal transmission link, the signal transmission link comprising a radio frequency front-end chip and a radio frequency transceiver chip connected in series, the radio frequency front-end chip is used to convert the received wireless signal into an analog electrical signal, and amplify and filter the analog electrical signal, and the radio frequency transceiver chip is used to convert the analog electrical signal into a digital electrical signal; at least two detection chips, respectively connected to the signal transmission link, the detection chip is used to detect the signal parameters in the series link; And, a gain controller, the gain controller is connected between the output end of the detection chip and the RF front-end chip, and the gain controller is used to adjust the gain coefficient of the RF front-end chip according to the signal parameter. According to the wireless radio frequency receiving device according to claim 1, at least two of the detection chips have different connection points with the signal transmission link. According to the wireless RF receiving device according to claim 1, the signal transmission link includes a digital filter chip, the digital filter chip is connected to the RF transceiver chip, and the digital filter chip is used to filter the digital electrical signal. According to the wireless RF receiving device of claim 3, the input end of at least one of the detection chips is electrically connected between the RF front-end chip and the RF transceiver chip; the input end of at least one of the detection chips is electrically connected between the RF transceiver chip and the digital filter chip; the input end of at least one of the detection chips is electrically connected to the output end of the digital filter chip. The wireless radio frequency receiving device according to claim 3, further comprising: A digital gain control chip, wherein the input end of the digital gain control chip is connected to the output end of the digital filter chip; At least one of the detection chips is connected to the output end of the digital gain control chip; and the output end of the gain controller is connected to the digital gain control chip. According to the wireless radio frequency receiving device according to claim 1, the detection chip is an amplitude detection chip and / or a power detection chip. According to the wireless RF receiving device of claim 5, the gain coefficient corresponding to the digital gain control chip is smaller than the gain coefficient corresponding to the RF front-end chip. The wireless radio frequency receiving device according to any one of claims 1 to 7, further comprising: An antenna is connected to the RF front-end chip, and the antenna is used to receive the wireless signal; a baseband chip is connected to the digital gain control chip when the wireless RF receiving device includes a digital gain control chip; or, when the wireless RF receiving device includes a digital filter chip but does not include the digital gain control chip, the baseband chip is connected to the digital filter chip; or, when the wireless RF receiving device does not include the digital filter chip and the digital gain control chip, the baseband chip is connected to the RF transceiver chip; the baseband chip is used to convert the format and interface of the filtered digital signal. The wireless radio frequency receiving device according to claim 1, further comprising: A baseband chip, the input end of which is connected to the output end of the radio frequency transceiver chip, and the baseband chip is used to convert the format and interface of the filtered digital signal; A field programmable gate array, the field programmable gate array comprising a gain association interface, a digital signal interface and a signal parameter reading interface, the gain association interface is connected to the RF front-end chip, the digital signal interface is connected to the output end of the baseband chip, the signal parameter reading interface is used to connect to the detection chip, the field programmable gate array is used to filter the digital electrical signal, and the field programmable gate array is also used to adjust the gain coefficient of the RF front-end chip according to the signal parameters before digital filtering processing and the signal parameters after digital filtering processing. A control method, used for the wireless radio frequency receiving device according to any one of claims 1 to 9, comprising: Controlling the detection chip to obtain signal parameters in the signal transmission link; The gain controller is controlled to generate a gain adjustment signal according to the signal parameter and the signal target threshold; the RF front-end chip is controlled to adjust the gain coefficient according to the gain adjustment signal so that the difference between the signal strength output by the wireless RF receiving device and the target strength is within a preset range. According to the control method of claim 10, when the wireless radio frequency receiving device includes a digital filter chip, the method further comprises: Control at least two of the detection chips to respectively obtain signal parameters of different positions of the correspondingly connected signal transmission link, wherein the signal parameters include a first signal parameter, a second signal parameter and a third signal parameter, the first signal parameter is a signal parameter between the RF front-end chip and the RF transceiver chip, the second signal parameter is a signal parameter between the RF transceiver chip and the digital filter chip, and the third signal parameter is a signal parameter output by the digital filter output end; generate multiple gain adjustment signals according to different signal parameters and different target thresholds, wherein the gain adjustment signal includes a first gain adjustment signal, a second gain adjustment signal and a third gain adjustment signal, the first gain adjustment signal corresponds to the first signal parameter, the second gain adjustment signal corresponds to the second signal parameter, and the third gain adjustment signal corresponds to the third signal parameter; control the RF front-end chip to adjust the gain coefficient according to at least one of the first gain adjustment signal, the second gain adjustment signal and the third gain adjustment signal, so that the strength difference between the signal strength output by the wireless RF receiving device and the target strength is within the preset range. The control method according to claim 11, further comprising: The RF front-end chip is controlled to adjust the gain coefficient according to the first gain adjustment signal, the second gain adjustment signal and the third gain adjustment signal in sequence, so that the strength difference between the signal strength output by the wireless RF receiving device and the target strength is within the preset range. According to the control method of claim 11, when the wireless radio frequency receiving device includes a digital gain control chip, the method further comprises: Generate a digital gain adjustment signal according to different signal parameters and different target thresholds; The gain coefficient corresponding to the digital gain control chip is adjusted according to the digital gain adjustment signal, so that the difference between the signal strength output by the wireless radio frequency receiving device and the target strength is within the preset range. According to the control method of claim 13, the gain coefficient corresponding to the digital gain control chip is smaller than the gain coefficient corresponding to the RF front-end chip. According to the control method of claim 10, when the wireless radio frequency receiving device includes a field programmable gate array, the method comprises: Controlling the programmable gate array to filter the digital electrical signal; The programmable gate array is controlled to adjust the gain coefficient of the radio frequency front-end chip according to the signal parameters before digital filtering processing and the signal parameters after digital filtering processing.

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