Radio frequency receiving device and control method therefor

Abstract

Disclosed are a radio frequency receiving device and a control method therefor. The device comprises: a signal transmission link (10), the signal transmission link (10) comprising a radio frequency front-end chip (101) and a radio frequency transceiver chip (102) connected in series, the radio frequency front-end chip (101) being configured to convert a received wireless signal into an analog electrical signal and amplify and filter the analog electrical signal, and the radio frequency transceiver chip (102) being configured to convert the analog electrical signal into a digital electrical signal; at least two test chips (20), respectively connected to the signal transmission link, the test chip (20) being configured to test a signal parameter in a serial link; and a gain controller (30), the gain controller (30) being connected between output ends of the test chips (20) and the radio frequency front-end chip (101), and the gain controller (30) being configured to adjust a gain coefficient of the radio frequency front-end chip on the basis of the signal parameter.

Description

Wireless radio frequency receiving device and control method thereof Technical Field

[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. Background Art

[0002] In related technologies, wireless RF receivers typically perform power control based on the strength of analog signals input to the RF terminal. However, in wireless RF receivers, input signals, especially wireless signals, can contain unstable spatial interference signals. Direct power control based on these signals can result in unstable or low signal strength within the resulting effective bandwidth. This can affect other operations, such as digital signal processing after analog-to-digital conversion, and can lead to significant errors in the gain control accuracy of the output digital signal.

[0003] Summary of the Invention

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

[0005] A 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 received wireless signals into analog electrical signals, amplify and filter the analog electrical signals, and convert the analog electrical signals into digital electrical signals.

[0006] At least two detection chips, respectively connected to the above-mentioned signal transmission link, the above-mentioned detection chips are used to detect signal parameters in the above-mentioned 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 parameters.

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

[0009] In one embodiment, the signal transmission link includes a digital filter chip, which is connected to the radio frequency transceiver chip. 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 radio frequency 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 embodiment, 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, the antenna being used to receive the wireless signal;

[0021] 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 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

[0023] In the case where 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;

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

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

[0029] Controlling the detection chip to obtain 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] Controlling at least two of the above-mentioned detection chips to respectively obtain signal parameters at 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 radio frequency front-end chip and the above-mentioned radio frequency transceiver chip, the above-mentioned second signal parameter is a signal parameter between the above-mentioned radio frequency 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] generating a plurality of 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 corresponding to the first signal parameter, the second gain adjustment signal corresponding to the second signal parameter, and the third gain adjustment signal corresponding 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 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 in sequence according to the first gain adjustment signal, the second gain adjustment signal, and the third gain adjustment signal, 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 embodiment, when the wireless radio frequency receiving device includes a digital gain control chip,

[0040] The above method further includes:

[0041] Generate digital gain adjustment signals 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 embodiment of the present invention, 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 includes 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 processing and the signal parameters after digital filtering processing. BRIEF DESCRIPTION OF THE DRAWINGS

[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 structural diagram of a wireless radio frequency receiving device according to another embodiment of the present disclosure;

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

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

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

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

[0055] Signal transmission link 10, 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 received wireless signals into analog electrical signals and amplify and filter the analog electrical signals. The radio frequency transceiver chip 102 is used to convert the analog electrical signals into digital electrical signals.

[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 parameters.

[0058] For example, as shown in Figure 1, an RF front-end chip 101 and an RF transceiver chip 102 are electrically connected to form a signal transmission link 10. The RF front-end chip 101 refers to the chip located at the front end of the wireless RF receiving device and is primarily responsible for amplifying, filtering, modulating, and other operations on the RF signal. The RF transceiver chip 102 integrates RF receiving and transmitting circuits, can receive RF signals from the antenna, 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, enabling two-way communication in the wireless communication system.

[0059] At least two detection chips 20 are connected to the signal transmission link 10. The detection chips 20 are used to measure signal parameters in the transmission link. Signal parameters may include signal strength and signal amplitude. It should be noted that the at least two detection chips 20 can be connected at the same connection point (not shown in the figure) or at different connection points 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 parameters obtained by the detection chip 20 with the target threshold and generates a gain adjustment signal based on 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 requirements.

[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. By gradually adjusting the gain coefficient through multiple signal parameters, 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 is overcome, the accuracy of the gain control can be effectively improved, and an effective digital signal with more stable intensity can be output.

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

[0063] For example, 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 components 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 according to 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 embodiment, the signal transmission link 10 includes a digital filter chip 40 , which is connected to the RF transceiver chip 102 . The digital filter chip 40 is used to filter the digital electrical signal.

[0066] As an example, FIG2 is a schematic structural diagram of another RF receiving device provided by the present disclosure. The signal transmission link 10 also includes a digital filter chip 40, which is connected to the output end of the RF transceiver chip 102. The digital filter chip 40 is mainly used to filter, remove noise, or perform spectrum analysis on digital signals. The digital filter chip 40 can quickly process signals in real-time applications and has the characteristics of high speed, precision, and programmability. The digital filter chip 40 is generally 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] For example, as shown in FIG2 , the 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 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 components in the RF receiving device and prevent the analog signal power or peak value 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. The strength of the digital signal may include the power of the digital 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 the gain control can be further improved. The input end of another detection chip 20 can be connected to the output end of the digital filter chip 40. The detection chip 20 is used to detect the strength of the filtered digital signal. The signal loudness measured by the chip is more accurate. Gain control is performed based on this measurement result, and its control accuracy is more refined.

[0071] In summary, the RF receiving device proposed in the embodiments of the present disclosure measures signal strength in the signal chain 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 of the digital filter chip 40. The device then controls the gain control response priorities from high to low based on the three signal strength detections and the corresponding gain control responses. Compared to RF receiving devices in related technologies, this RF receiving device can also detect the power of valid signals after digital filtering, perform signal gain control and feedback, and output valid digital signals 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 , which is a schematic structural diagram of a wireless RF receiving device according to another embodiment of the present disclosure, the signal transmission link 10 further 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 to measure the signal strength after the digital gain chip controls the signal. 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 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 both the RF front-end chip 101 and the digital gain control chip 70. Based on 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 embodiment, the detection chip 20 is an amplitude detection chip 20 and / or a power detection chip 20 .

[0079] For example, 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 signal amplitude, 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 level of the signal. It can sample and process the input signal, calculate the signal power value, and output the corresponding power information. The combination of amplitude detection and power detection can more accurately obtain the signal strength at different nodes in the signal link.

[0080] In one embodiment, 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 . By coordinating the larger gain at the front end and the smaller gain at the back end, the accuracy of the gain control is further improved.

[0082] In one embodiment, it further includes:

[0083] Antenna 50, connected to the RF front-end chip 101, the antenna 50 is 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] Illustratively, antenna 50 is a device for transmitting and receiving electromagnetic waves. It is primarily used to convert electromagnetic waves into electrical signals in a receiving mode, or to convert electrical signals into electromagnetic waves in a transmitting mode. Antenna 50 is responsible for receiving wireless signals from a base station or other device in a wireless communication system.

[0089] The baseband chip 60 is responsible for processing baseband signals in wireless communication systems. Baseband signals are unmodulated, low-frequency signals that contain information such as audio, video, and data. The baseband chip 60 is primarily responsible for performing modulation, demodulation, encoding, decoding, and modem processing on the baseband signals, converting the filtered digital signals into different formats and interfaces.

[0090] As shown in FIG4 , when the wireless RF 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 , which is a structural 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 , this 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. At the same time, the structure does not have the digital filter chip 40, and the structure is simpler.

[0093] In one embodiment, it further includes:

[0094] The baseband chip 60 has an input terminal connected to the output terminal of the RF transceiver chip 102, and 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, and 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 processing and the signal parameters after digital filtering processing.

[0096] For example, a field-programmable gate array (FPGA) 80 is a reconfigurable integrated circuit chip. Compared to traditional fixed-function integrated circuits, FPGAs are programmable and can be configured and reconfigured according to user needs to implement specific functions and logic circuits. As shown in FIG5 , which is a structural schematic diagram of another radio frequency transceiver device proposed in the present disclosure, the field-programmable gate array 80 includes a gain association interface 801, a digital signal interface 802, and a signal parameter reading interface 803. The field-programmable 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 filtering 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 filtered digital electrical signal, 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 based on the signal parameters before and 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 the FPGA. The FPGA is connected to the front-end electronic devices through the gain correlation interface, digital signal interface and signal parameter reading interface. This structural design can simplify the structure of the RF transceiver equipment, optimize product size, reduce costs, and implement this function in the FPGA with greater flexibility and faster response.

[0098] In a second aspect of the present disclosure, a control method is provided. Please refer to FIG6 , which shows a schematic flow chart of a control method for a wireless RF receiving device according to an embodiment of the present disclosure. The method is applied to any of the wireless RF receiving devices described 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. The detection chip 20 is used to measure 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. 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 based on 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, the control method of the wireless RF receiving device proposed in the present disclosure 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. By gradually adjusting the gain coefficient through multiple signal parameters, 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 is overcome, the accuracy of the gain control can be effectively improved, and an effective digital signal with more stable intensity 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 at 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] generating a plurality of 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 corresponding to the first signal parameter, the second gain adjustment signal corresponding to the second signal parameter, and the third gain adjustment signal corresponding 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 difference between the signal strength output by the wireless RF receiving device and the target strength is within a preset range.

[0109] For example, in the RF transceiver device shown in FIG2 , the 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 analog signal strength, that is, the first signal parameter, and the analog signal strength may include 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] 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 components in the RF receiving device and prevent the analog signal power or peak 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 the 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 signal loudness measured by the chip is more accurate, and 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 embodiment 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 chain, 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 and adjustment accuracy 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 in sequence according to the first gain adjustment signal, the second gain adjustment signal, and the third gain adjustment signal, 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 a first signal parameter with a 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 components in the RF receiving device and prevent the analog signal power or peak from exceeding the RF period tolerance. A second gain adjustment signal is generated by comparing a second signal parameter with a 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 the gain control can be further improved. A third gain adjustment signal is generated by comparing a third signal parameter with a third target threshold, and the gain of the RF front-end chip 101 is adjusted according to the third gain adjustment signal. The signal loudness measured by the chip is more accurate, and gain control is performed based on this measurement result, with finer control accuracy.

[0116] In summary, the control method for 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 chain. The control is performed in descending order based on the signal strength detection at these three locations and the corresponding gain control response priorities. Compared to RF receiving devices in related technologies, this RF receiving device can also perform power detection on valid signals after digital filtering, and perform signal gain control and feedback, thereby outputting valid digital signals with more stable strength.

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

[0118] The above method further includes:

[0119] Generate digital gain adjustment signals 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 RF receiving device and the target strength is within a preset range.

[0121] For example, as shown in FIG4 , the signal transmission link 10 further 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 to measure the signal strength after the digital gain chip controls the signal. 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 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 both the RF front-end chip 101 and the digital gain control chip 70. The gain coefficients of the RF front-end chip 101 and the digital gain control chip 70 are controlled 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 embodiments, 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 . By coordinating the larger gain at the front end and the smaller gain at the back end, the accuracy of the gain control is further improved.

[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 processing and the signal parameters after digital filtering processing.

[0129] As shown in FIG5 , which is a schematic structural diagram of another RF transceiver device proposed in the present disclosure, the field programmable gate array (FPGA) 80 includes a gain association interface, a digital signal interface, and a signal parameter reading interface. The FPGA 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 of the baseband chip 60, and the signal parameter reading interface is used to connect to the detection chip 20. The digital filter module 804 of the FPGA 80 is used to filter the digital electrical signal. The power detection module 805 of the FPGA 80 is used to measure the strength of the filtered digital electrical signal. The gain control module 806 of the FPGA is used to adjust the gain coefficient of the RF front-end chip 101 based on the signal parameters before and 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 the FPGA. The FPGA is connected to the front-end electronic devices through the gain association interface, digital signal interface and signal parameter reading interface. This structural design can simplify the structure of the RF transceiver equipment, optimize product size, reduce costs, and implement this function in the FPGA with greater flexibility and faster response.

[0131] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description 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 concepts. 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 may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims of this specification and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. 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 chips are used to detect signal parameters in the series link; as well as, 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.

2. The wireless radio frequency receiving device according to claim 1, The connection points between at least two of the detection chips and the signal transmission link are different.

3. The wireless radio frequency receiving device according to claim 1, 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.

4. The wireless radio frequency receiving device according to claim 3, An input end of at least one of the detection chips is electrically connected between the RF front-end chip and the RF transceiver chip; An input terminal of at least one of the detection chips is electrically connected between the radio frequency transceiver chip and the digital filter chip; An input end of at least one of the detection chips is electrically connected to an output end of the digital filter chip.

5. 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; The output end of the gain controller is connected to the digital gain control chip. 6 . The wireless radio frequency receiving device according to claim 1 , wherein the detection chip is an amplitude detection chip and / or a power detection chip. 7 . The wireless RF receiving device according to claim 5 , wherein the gain coefficient corresponding to the digital gain control chip is smaller than the gain coefficient corresponding to the RF front-end chip.

8. The wireless radio frequency receiving device according to any one of claims 1 to 7, further comprising: An antenna, connected to the RF front-end chip, and used to receive the wireless signal; A baseband chip, when the wireless radio frequency receiving device includes a digital gain control chip, the baseband chip is connected to the digital gain control chip; or, 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, 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; The baseband chip is used to convert the format and interface of the filtered digital signal.

9. 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 RF 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.

10. A control method, used in 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; Controlling the gain controller 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 strength difference between the signal strength output by the wireless RF receiving device and the target strength is within a preset range.

11. The control method according to claim 10, wherein when the wireless radio frequency receiving device comprises a digital filter chip, The method further comprises: Control at least two of the detection chips to respectively obtain signal parameters at different positions of the correspondingly connected signal transmission links, 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 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; 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 the preset range.

12. 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.

13. The control method according to claim 11, wherein 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.

14. The control method according to claim 13, wherein the gain coefficient corresponding to the digital gain control chip is smaller than the gain coefficient corresponding to the RF front-end chip.

15. The control method according to claim 10, wherein the wireless radio frequency receiving device comprises 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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