Half-duplex ultra-wideband ultra-short wave radio frequency device

Abstract

The invention discloses a half-duplex ultra-wideband ultra-short wave radio frequency device, and relates to the technical field of radio frequency communication, and the device comprises a receiving channel module, a control module, a transmitting channel module, and a transmitting-receiving change-over switch. The control module is respectively connected with the receiving channel module, the transmitting channel module and the transmitting-receiving change-over switch; the transmitting channel module is also connected with the transmitting-receiving change-over switch; the transmitting-receiving change-over switch is also connected with the receiving channel module; the receiving channel module converts a received external radio frequency input signal into an intermediate frequency signal; the control module regulates and controls processing parameters of the receiving channel module and the transmitting channel module, generates a switching signal and sends the switching signal to the receiving and transmitting change-over switch; the transmitting channel module converts a signal to be transmitted into a radio frequency output signal; and the receiving and transmitting change-over switch responds to the switching signal to switch the receiving and transmitting states. The transmitting channel module and the receiving channel module cover the ultra-wideband frequency band, and meanwhile, the signals are processed, so that the influence of interference and noise on the signals is reduced.

Description

Technical Field

[0001] The present application relates to the field of radio frequency communication technology, and more specifically, to a half-duplex ultra-wideband ultra-short wave radio frequency device. Background Art

[0002] Ultrashort wave communication technology, also known as very high frequency communication technology, is a technology that uses radio waves in the 300MHz to 3GHz frequency band for communication. Since the wavelength of radio waves in this frequency band is short, it is also called meter wave communication. Ultrashort wave communication technology is widely used in important information fields such as broadcasting, television, radar, navigation, and mobile communications. Among them, frequency hopping communication technology, spread spectrum communication technology, and communication anti-countermeasures technology are the key research directions of ultrashort wave communication technology.

[0003] In the existing ultra-short wave communication technology, the reception and transmission of signals are usually achieved through the radio frequency module. The radio frequency module is the core component of the radio frequency front end of the communication device, and mainly completes the processing of radio frequency signals, including signal frequency selection, frequency conversion, amplification, filtering and other functions. Most of the existing radio frequency modules use superheterodyne reception and transmission technology, that is, the radio frequency signal is first converted into an intermediate frequency signal by frequency conversion, and then the intermediate frequency signal is processed. In addition, in order to cope with complex electromagnetic environments, existing radio frequency modules also usually use a variety of anti-interference technologies, such as automatic gain control (AGC), frequency synthesis technology, etc.

[0004] However, the existing ultra-short wave communication technology still has some defects. First, most of the existing RF modules can only cover a limited frequency band and cannot meet the needs of ultra-wideband communication. Secondly, when processing high-speed data signals, the existing RF modules are easily affected by interference and noise, resulting in a decrease in communication quality. In addition, when implementing multi-mode and multi-band communications, the existing RF modules usually require complex circuit design and high manufacturing costs. Therefore, it is particularly important to develop a RF module that can cover the ultra-wideband frequency band, has excellent anti-interference ability and low manufacturing cost. Summary of the invention

[0005] In response to at least one defect or improvement need in the prior art, the present invention provides a half-duplex ultra-wideband ultra-short wave radio frequency device, which is used to solve the problems that most existing radio frequency modules in the prior art can only cover a limited frequency band and cannot meet the needs of ultra-wideband communication. When processing high-speed data signals, they are easily affected by interference and noise, resulting in reduced communication quality. When realizing multi-mode and multi-band communication, complex circuit design and high manufacturing costs are usually required.

[0006] To achieve the above object, according to a first aspect of the present invention, a half-duplex ultra-wideband ultra-short wave radio frequency device is provided, comprising: a receiving channel module, a control module, a transmitting channel module and a transceiver switching switch; the control module is respectively connected to the receiving channel module, the transmitting channel module and the transceiver switching switch; the transmitting channel module is also connected to the transceiver switching switch; the transceiver switching switch is also connected to the receiving channel module;

[0007] Wherein, the receiving channel module is used to convert the received external RF input signal into an intermediate frequency signal under the control of the control module;

[0008] The control module is used to adjust the processing parameters of the receiving channel module and the transmitting channel module, and generate a switching signal to send to the receiving and transmitting switching switch;

[0009] The transmitting channel module is used to convert the signal to be transmitted into a radio frequency output signal under the control of the control module;

[0010] The transmit / receive switch is used to switch between the receiving and transmitting states in response to a switching signal.

[0011] In a possible implementation, the receiving channel module further includes: an input power detection circuit, a filter group, a frequency conversion filter circuit and a LINK16 receiving circuit; the input power detection circuit is connected to the filter group and the LINK16 receiving circuit respectively; the LINK16 receiving circuit is also connected to the frequency conversion filter circuit;

[0012] Wherein, the input power detection circuit is used to detect the initial power of the RF input signal;

[0013] The filter group is used to filter the RF input signal after detection;

[0014] The frequency conversion filter circuit is used to convert and filter the filtered radio frequency input signal into a first intermediate frequency signal;

[0015] The LINK16 receiving circuit is used to convert the detected RF input signal into a second intermediate frequency signal through frequency conversion and filtering.

[0016] In a possible implementation, the input power detection circuit further includes: a limiter, a directional coupler, a logarithmic amplifier, a switch control circuit, a first low noise amplifier, a first low pass filter, a first attenuator, a first radio frequency switch, and a second radio frequency switch;

[0017] Among them, the limiter is connected to the directional coupler, the directional coupler is respectively connected to the first RF switch and the logarithmic amplifier, the logarithmic amplifier is connected to the switch switching control circuit, the switch switching control circuit is respectively connected to the first RF switch and the second RF switch, the first RF switch is respectively connected to the first low-noise amplifier and the first attenuator, the first low-noise amplifier is connected to the first low-pass filter, the first low-pass filter is connected to the second RF switch, and the first attenuator is connected to the second RF switch.

[0018] In a possible implementation, the LINK16 receiving circuit further includes: a power divider, a plurality of third radio frequency switches, a plurality of first cavity filters, a plurality of first amplifiers, a plurality of fourth radio frequency switches, and a plurality of first adjustable amplifiers;

[0019] The power dividers are respectively connected to a plurality of third RF switches, the plurality of third RF switches are connected to a plurality of first amplifiers, the plurality of first amplifiers are connected to a plurality of fourth RF switches, and the plurality of fourth RF switches are connected to a plurality of first adjustable amplifiers.

[0020] In a possible implementation, the variable frequency filter circuit further includes: a fifth radio frequency switch, a second adjustable amplifier, a mixer, a second low-pass filter, a second amplifier, a sixth radio frequency switch, a plurality of second cavity filters, and a seventh radio frequency switch;

[0021] Among them, the fifth RF switch, the second adjustable amplifier, the mixer, the second low-pass filter, the second amplifier, the sixth RF switch, a plurality of second cavity filters, and the seventh RF switch are connected in sequence.

[0022] In a possible implementation, the filter group further includes: a plurality of LC filters; and the plurality of LC filters are connected in parallel.

[0023] In a possible implementation, the transmission channel module further includes: a frequency band modulation circuit, a filter amplifier circuit and a frequency filter group; the frequency band modulation circuit, the attenuation filter circuit and the frequency filter group are connected in sequence;

[0024] Wherein, the frequency band modulation circuit is used to modulate the frequency band of the signal to be transmitted using multiple modes;

[0025] The filter amplifier circuit is used to filter and amplify the modulated signal to be transmitted;

[0026] The frequency filter group is used to filter and combine the to-be-transmitted signals after filtering and amplification at a preset frequency to obtain a radio frequency output signal.

[0027] In a possible implementation, the frequency band modulation circuit includes a plurality of modulation paths, and the modulation paths include an eighth radio frequency switch, a second mixer, a first dielectric low-pass filter, a first acoustic wave band-pass filter, a third amplifier, and a ninth radio frequency switch;

[0028] Among them, the RF switch is connected to the second mixer and the first dielectric low-pass filter respectively, the second mixer is connected to the first dielectric low-pass filter, the first dielectric low-pass filter is connected to the ninth RF switch, the second mixer is connected to the first acoustic surface bandpass filter, the first acoustic surface bandpass filter is connected to the third amplifier, and the third amplifier is connected to the ninth RF switch.

[0029] In a possible implementation, the filter amplifier circuit further includes: a fourth amplifier, a second attenuator, a second dielectric low-pass filter, a tenth radio frequency switch, and two-way power amplifiers;

[0030] Among them, the fourth amplifier, the second attenuator, the second dielectric low-pass filter, the tenth radio frequency switch, and the two power amplifiers are connected in sequence.

[0031] In a possible implementation, the control module further includes: a low-frequency interface, a voltage stabilizing circuit, a power module and an FPGA control unit; the low-frequency interface is connected to the voltage stabilizing circuit, the power module and the FPGA control unit respectively; the power module is also connected to the FPGA control unit;

[0032] Among them, the low-frequency interface is used to receive external power supply voltage and upper control instructions;

[0033] The voltage stabilizing circuit is used to stabilize the external power supply voltage and send it to the transmitting channel module;

[0034] The power supply module is used to divide the external power supply voltage to supply power to the transmitting channel module, the receiving channel module and the FPGA control unit;

[0035] The FPGA control unit is used to control the transmitting channel module and the receiving channel module according to the upper control instructions.

[0036] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0037] The invention provides a half-duplex ultra-wideband ultra-short wave radio frequency device, which realizes the coverage of the ultra-wideband frequency band through the designed transmitting channel module and receiving channel module, and can perform radio frequency communication in a wider frequency range, thereby meeting the demand of ultra-wideband communication for the frequency band width, not only improving the flexibility and adaptability of communication, but also effectively reducing the influence of interference and noise on the signal. At the same time, the gain and filtering parameters of the transmitting channel module and the receiving channel module can be adjusted, the receiving quality and anti-interference ability of the radio frequency signal are improved, the stable transmission of the high-speed data signal is ensured, and the reliability and stability of the communication are improved. In addition, the invention adopts modular design and flexible parameter control mechanism, simplifies the circuit structure, reduces the design complexity, and at the same time, the device has the characteristics of easy integration and expansion, can be conveniently connected and interoperated with other communication equipment or devices, and also realizes fast switching between receiving and transmitting states by integrating key components such as the transmitting and receiving switching switch, thereby improving the communication efficiency, not only reducing the manufacturing cost, but also improving the maintainability and scalability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A schematic structural diagram of an embodiment of a half-duplex ultra-wideband ultra-short wave radio frequency device provided by the present invention;

[0040] Figure 2 A schematic structural diagram of an embodiment of a receiving channel module provided by the present invention;

[0041] Figure 3 A schematic structural diagram of an embodiment of an input power detection circuit provided by the present invention;

[0042] Figure 4 A schematic diagram of the structure of an embodiment of the LINK16 receiving circuit provided by the present invention;

[0043] Figure 5 A schematic structural diagram of an embodiment of a variable frequency filter circuit provided by the present invention;

[0044] Figure 6 A schematic structural diagram of an embodiment of a filter group provided by the present invention;

[0045] Figure 7 A schematic diagram of the structure of an embodiment of a multiple frequency band modulation circuit provided by the present invention;

[0046] Figure 8 A schematic structural diagram of an embodiment of a filter amplifier circuit provided by the present invention;

[0047] Fig. 9 A schematic structural diagram of an embodiment of a control module provided by the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] The terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or equipment that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or equipment.

[0050] See also Figure 1 , Figure 1 A structural schematic diagram of an embodiment of a half-duplex ultra-wideband ultra-short wave radio frequency device provided by the present invention. In a specific embodiment of the present invention, a half-duplex ultra-wideband ultra-short wave radio frequency device is disclosed, including: a receiving channel module, a control module, a transmitting channel module and a transceiver switching switch; the control module is respectively connected to the receiving channel module, the transmitting channel module and the transceiver switching switch; the transmitting channel module is also connected to the transceiver switching switch; the transceiver switching switch is also connected to the receiving channel module;

[0051] Wherein, the receiving channel module is used to convert the received external RF input signal into an intermediate frequency signal under the control of the control module;

[0052] The control module is used to adjust the processing parameters of the receiving channel module and the transmitting channel module, and generate a switching signal to send to the receiving and transmitting switching switch;

[0053] The transmitting channel module is used to convert the signal to be transmitted into a radio frequency output signal under the control of the control module;

[0054] The transmit / receive switch is used to switch between the receiving and transmitting states in response to a switching signal.

[0055] In the above embodiment, the receiving channel module captures and converts the external RF input signal. The module can accurately receive the RF signals from the air and convert these RF signals into intermediate frequency signals suitable for subsequent processing through internal signal conditioning circuits and mixers and other components, which not only reduces the frequency of the signal but also improves the stability and anti-interference ability of the signal.

[0056] The control module coordinates the working status and processing parameters of each module, and dynamically adjusts the processing parameters of the receiving channel module and the transmitting channel module according to the preset algorithm and current working requirements to ensure the best signal processing effect. At the same time, the control module is also responsible for generating a switching signal and sending it to the transceiver switch to control the device to quickly switch between the receiving and transmitting states.

[0057] The transmitting channel module converts the signal to be transmitted into a radio frequency output signal. Under the control of the control module, the module converts the processed baseband signal or intermediate frequency signal into a radio frequency output signal that meets the ultra-wideband and ultra-short wave communication standards through up-conversion, power amplification and other steps, and then transmits it through the antenna to complete the transmission of information.

[0058] The transmit-receive switch responds to the switching signal sent by the control module to achieve fast and accurate switching of the device between the receiving and transmitting states. This switching mechanism ensures that the device can flexibly respond to different communication needs during the communication process, thereby improving the efficiency and reliability of communication.

[0059] Compared with the prior art, the half-duplex ultra-wideband ultra-short wave radio frequency device provided in this embodiment realizes the coverage of the ultra-wideband frequency band through the designed transmitting channel module and receiving channel module, and can perform radio frequency communication in a wider frequency range, thereby meeting the demand of ultra-wideband communication for the frequency band width, not only improving the flexibility and adaptability of communication, but also effectively reducing the influence of interference and noise on the signal. At the same time, the gain and filtering parameters of the transmitting channel module and the receiving channel module can be adjusted, the receiving quality and anti-interference ability of the radio frequency signal are improved, the stable transmission of high-speed data signals is ensured, and the reliability and stability of communication are improved. In addition, the present invention adopts modular design and flexible parameter control mechanism, simplifies the circuit structure, reduces the design complexity, and at the same time, the device has the characteristics of easy integration and expansion, can be easily connected and interoperated with other communication equipment or devices, and also realizes fast switching between receiving and transmitting states by integrating key components such as transceiver switching switches, thereby improving communication efficiency, not only reducing manufacturing costs, but also improving the maintainability and scalability of the device.

[0060] See also Figure 2 , Figure 2The schematic diagram of the structure of an embodiment of the receiving channel module provided by the present invention. In some embodiments of the present invention, the receiving channel module further includes: an input power detection circuit, a filter group, a frequency conversion filter circuit and a LINK16 receiving circuit; the input power detection circuit is connected to the filter group and the LINK16 receiving circuit respectively; the LINK16 receiving circuit is also connected to the frequency conversion filter circuit;

[0061] Wherein, the input power detection circuit is used to detect the initial power of the RF input signal;

[0062] The filter group is used to filter the RF input signal after detection;

[0063] The frequency conversion filter circuit is used to convert and filter the filtered radio frequency input signal into a first intermediate frequency signal;

[0064] The LINK16 receiving circuit is used to convert the detected RF input signal into a second intermediate frequency signal through frequency conversion and filtering.

[0065] In the above embodiment, the main task of the input power detection circuit is to detect the initial power of the RF input signal, which can help the device understand the strength of the input signal, thereby providing necessary reference information for subsequent signal conditioning and filtering. Through the detected power information, the device can dynamically adjust the gain and filtering parameters of the receiving channel to ensure the stability and accuracy of the signal in subsequent processing.

[0066] The filter group is responsible for filtering the RF input signal after detection. By adjusting the center frequency and bandwidth of the filter, the filter group can effectively filter out the interference components and noise in the signal, improve the signal purity and signal-to-noise ratio, and enable the receiving channel module to adapt to the needs of different frequency bands and communication environments, thereby improving the flexibility and adaptability of the device.

[0067] The frequency conversion filter circuit converts the filtered RF input signal into a first intermediate frequency signal by frequency conversion and filtering. By reducing the frequency of the signal, the subsequent signal processing process is simplified and the signal stability and anti-interference ability are improved. At the same time, the frequency conversion filter circuit further improves the signal purity and signal-to-noise ratio through precise filtering design.

[0068] The LINK16 receiving circuit is specially used to perform frequency conversion and filtering on the detected RF input signal and convert it into a second intermediate frequency signal. LINK16 is a high-performance communication protocol that requires the receiving end to have highly sensitive and stable signal processing capabilities. Therefore, the design of the LINK16 receiving circuit adopts signal processing technology to ensure stable reception and processing of signals in complex communication environments, which not only improves the communication performance of the device, but also provides strong hardware support for the application of the LINK16 communication protocol.

[0069] See also Figure 3 , Figure 3 A schematic diagram of the structure of an embodiment of an input power detection circuit provided by the present invention. In some embodiments of the present invention, the input power detection circuit further includes: a limiter, a directional coupler, a logarithmic amplifier, a switch switching control circuit, a first low noise amplifier, a first low pass filter, a first attenuator, a first radio frequency switch, and a second radio frequency switch;

[0070] Among them, the limiter is connected to the directional coupler, the directional coupler is respectively connected to the first RF switch and the logarithmic amplifier, the logarithmic amplifier is connected to the switch switching control circuit, the switch switching control circuit is respectively connected to the first RF switch and the second RF switch, the first RF switch is respectively connected to the first low-noise amplifier and the first attenuator, the first low-noise amplifier is connected to the first low-pass filter, the first low-pass filter is connected to the second RF switch, and the first attenuator is connected to the second RF switch.

[0071] In the above embodiment, the limiter can protect subsequent circuits from being damaged by excessive RF input signals. When the power of the RF input signal exceeds a certain threshold, the limiter will limit the amplitude of the signal to ensure that it will not damage subsequent components such as the directional coupler and logarithmic amplifier, thereby improving the reliability and stability of the entire input power detection circuit.

[0072] The directional coupler is responsible for extracting a portion of the energy from the RF input signal and transmitting it to the logarithmic amplifier for detection processing, ensuring that the input power detection circuit can accurately detect the power of the RF input signal. At the same time, the directional coupler also has a certain degree of isolation, which can prevent the detection processing from interfering with the RF input signal.

[0073] The logarithmic amplifier can convert the RF signal transmitted by the directional coupler into a voltage signal in the logarithmic domain, thereby realizing accurate detection of the RF input signal power. The logarithmic amplifier uses logarithmic conversion technology to ensure the accuracy and stability of the detection results.

[0074] The switch switching control circuit controls the switching state of the first RF switch and the second RF switch according to the output result of the logarithmic amplifier. When the power of the RF input signal is large, the switch switching control circuit will switch to the first RF switch, so that the signal is amplified by the first low noise amplifier; when the power of the RF input signal is small, it will switch to the second RF switch, so that the signal is attenuated by the first attenuator. It ensures that the input power detection circuit can flexibly adjust the signal processing path according to different RF input signal powers, thereby improving the dynamic range and adaptability of the device.

[0075] The first low noise amplifier amplifies the radio frequency signal transmitted through the first radio frequency switch and adopts a low noise design, which can effectively reduce noise interference during the amplification process and improve the signal-to-noise ratio of the signal, so that the input power detection circuit can work stably in a low signal-to-noise ratio environment.

[0076] The first low-pass filter performs filtering processing on the signal amplified by the first low-noise amplifier, and can filter out high-frequency interference components in the signal, improve the purity and stability of the signal, and further enhance the anti-interference ability of the input power detection circuit.

[0077] The first attenuator attenuates the RF signal transmitted through the second RF switch. When the power of the RF input signal is small, the first attenuator can reduce the amplitude of the signal to adapt it to the processing range of the subsequent circuit, ensuring that the input power detection circuit can process RF input signals of different power ranges.

[0078] The first RF switch and the second RF switch are respectively used to control the path of the RF signal passing through the first low noise amplifier or the first attenuator. They are switched according to the control signal of the switch switching control circuit, thereby realizing flexible adjustment of the RF input signal power and improving the flexibility and adaptability of the input power detection circuit.

[0079] See also Figure 4 , Figure 4 A schematic diagram of the structure of an embodiment of the LINK16 receiving circuit provided by the present invention. In some embodiments of the present invention, the LINK16 receiving circuit further includes: a power divider, a plurality of third radio frequency switches, a plurality of first cavity filters, a plurality of first amplifiers, a plurality of fourth radio frequency switches, and a plurality of first adjustable amplifiers;

[0080] The power dividers are respectively connected to a plurality of third RF switches, the plurality of third RF switches are connected to a plurality of first amplifiers, the plurality of first amplifiers are connected to a plurality of fourth RF switches, and the plurality of fourth RF switches are connected to a plurality of first adjustable amplifiers.

[0081] In the above embodiment, the power divider distributes the power of the received RF input signal, and can evenly distribute a single RF input signal to multiple subsequent processing channels, thereby ensuring that each channel can receive signals with the same power, thereby improving the parallel processing capability of the LINK16 receiving circuit and the stability of signal processing.

[0082] Multiple third RF switches are respectively connected to the output ends of the power divider to control the paths of RF signals entering different processing channels. Switching is performed according to the device control signal, thereby realizing flexible routing of RF signals. This enables the LINK16 receiving circuit to dynamically adjust the number and configuration of signal processing channels according to actual needs, thereby improving the flexibility and adaptability of the device.

[0083] The output end of each third RF switch is connected to a first cavity filter to filter out interference components and noise in the RF signal and improve the signal purity and signal-to-noise ratio. The first cavity filter adopts a high-performance cavity structure with excellent filtering performance and stability, ensuring that the LINK16 receiving circuit can stably receive and process signals in a complex communication environment.

[0084] The RF signal after filtering by the first cavity filter is transmitted to multiple first amplifiers for amplification processing. The first amplifier adopts a low-noise, high-gain design, which can effectively improve the signal power and signal-to-noise ratio, and provide a reliable signal source for subsequent signal processing.

[0085] The plurality of fourth RF switches are respectively connected to the output ends of the plurality of first amplifiers, and are used to control the switching of the amplified RF signals into different subsequent processing paths, thereby realizing the flexible adjustment of the signal processing path. This further enhances the flexibility and adaptability of the LINK16 receiving circuit.

[0086] Multiple first adjustable amplifiers further amplify the RF signal. The first adjustable amplifier has an adjustable gain function and can dynamically adjust the gain value according to actual needs, thereby ensuring the stability and accuracy of the output signal. The first adjustable amplifier adopts automatic adjustment technology to achieve precise control of the gain value and improve the performance and stability of the LINK16 receiving circuit.

[0087] See also Figure 5 , Figure 5 A schematic diagram of the structure of an embodiment of the variable frequency filter circuit provided by the present invention. In some embodiments of the present invention, the variable frequency filter circuit further includes: a fifth radio frequency switch, a second adjustable amplifier, a mixer, a second low-pass filter, a second amplifier, a sixth radio frequency switch, a plurality of second cavity filters, and a seventh radio frequency switch;

[0088] Among them, the fifth RF switch, the second adjustable amplifier, the mixer, the second low-pass filter, the second amplifier, the sixth RF switch, a plurality of second cavity filters, and the seventh RF switch are connected in sequence.

[0089] In the above embodiment, the fifth RF switch controls the path of the RF input signal entering the frequency conversion filter circuit, ensuring that the RF input signal can be accurately transmitted to the subsequent processing components, thereby improving the flexibility and adaptability of the frequency conversion filter circuit and enabling it to be dynamically adjusted according to different application scenarios.

[0090] The second adjustable amplifier has an adjustable gain function and can dynamically adjust the gain value according to the strength of the RF input signal, thereby ensuring that the amplified signal has appropriate power and signal-to-noise ratio, thereby improving the gain control capability and signal processing capability of the variable frequency filter circuit.

[0091] The mixer mixes the RF input signal with the local oscillator signal generated by the local oscillator to generate an intermediate frequency signal with a specific frequency difference, thereby realizing the frequency conversion of the RF input signal and facilitating subsequent signal processing.

[0092] The second low-pass filter can filter out high-frequency interference components and noise in the intermediate frequency signal, improve the purity and stability of the signal, and ensure that the intermediate frequency signal output by the frequency conversion filter circuit has high-quality spectrum characteristics.

[0093] The second amplifier has the characteristics of high gain and low noise, and can effectively improve the power and signal-to-noise ratio of the intermediate frequency signal, providing a reliable signal source for subsequent signal processing.

[0094] The sixth radio frequency switch transmits the intermediate frequency signal to different subsequent processing channels or components, thereby improving the flexibility and scalability of the frequency conversion filter circuit.

[0095] Multiple second cavity filters are used to further filter the intermediate frequency signal to remove possible interference components and noise. The second cavity filter adopts a high-performance cavity structure with excellent filtering performance and stability, ensuring that the intermediate frequency signal output by the variable frequency filter circuit has high-quality spectrum characteristics.

[0096] The seventh RF switch serves as the output end of the frequency conversion filter circuit and is responsible for transmitting the processed intermediate frequency signal to subsequent processing modules or components, completing the entire signal processing flow of the frequency conversion filter circuit and providing a stable and reliable first intermediate frequency signal output for the receiving channel module.

[0097] See also Figure 6 , Figure 6 This is a schematic structural diagram of an embodiment of a filter group provided by the present invention. In some embodiments of the present invention, the filter group further includes: a plurality of LC filters; and the plurality of LC filters are connected in parallel.

[0098] In the above embodiment, when a signal enters the filter group, it will pass through all the LC filters connected in parallel at the same time, and each filter will filter the signal according to its own filtering characteristics. Since the filters cooperate with each other, the entire filter group can achieve accurate filtering of the signal. During the processing, the filter group will dynamically adjust the parameters of the filter (such as frequency, bandwidth, etc.) according to the device control signal to adapt to the needs of different application scenarios, realize dynamic adjustment, and make the filter group have excellent adaptability and flexibility.

[0099] In some embodiments of the present invention, the transmission channel module further includes: a frequency band modulation circuit, a filter amplifier circuit and a frequency filter group; the frequency band modulation circuit, the attenuation filter circuit and the frequency filter group are connected in sequence;

[0100] Wherein, the frequency band modulation circuit is used to modulate the frequency band of the signal to be transmitted using multiple modes;

[0101] The filter amplifier circuit is used to filter and amplify the modulated signal to be transmitted;

[0102] The frequency filter group is used to filter and combine the to-be-transmitted signals after filtering and amplification at a preset frequency to obtain a radio frequency output signal.

[0103] In the above embodiments, the frequency band modulation circuit uses multiple modes to modulate the frequency band of the signal to be transmitted. The modulation process can adjust the signal to be transmitted to a specific frequency band according to the needs of the device to ensure that the signal can be stably and efficiently transmitted within the target frequency band. The frequency band modulation circuit supports multiple modulation modes. The selection of the modulation mode depends on the specific application scenario and communication protocol requirements of the device. By selecting the appropriate modulation mode, the frequency band modulation circuit can achieve precise control of the signal frequency band.

[0104] The filter amplifier circuit receives the modulated signal from the frequency band modulation circuit, and performs filtering and amplification processing on it to remove the high-frequency interference components and noise in the modulated signal, while improving the signal power and signal-to-noise ratio, providing a reliable signal source for subsequent signal processing. The filter in the filter amplifier circuit adopts a high-performance filtering design, which can accurately filter out the interference components and noise within the specified frequency range. At the same time, the amplifier part adopts a high-gain, low-noise design to ensure that the signal power and signal-to-noise ratio reach the best state.

[0105] The frequency filter group receives the filtered and amplified signal from the filter amplifier circuit, and performs filtering and combining processing on it at a preset frequency, and finally obtains a RF output signal that meets the requirements, ensuring that the spectrum characteristics of the RF output signal meet the requirements of the device, and realizing the combined output of the signal for subsequent transmission processing. The filters in the frequency filter group use high-performance filtering technology and combining design, which can accurately control the spectrum characteristics of the RF output signal. By adjusting the parameters of the filter (such as frequency, bandwidth, etc.), the frequency filter group can achieve precise control of the RF output signal to meet the different application scenarios and communication protocol requirements of the device.

[0106] See also Figure 7 , Figure 7A schematic diagram of the structure of an embodiment of a multiple frequency band modulation circuit provided by the present invention. In some embodiments of the present invention, the frequency band modulation circuit includes multiple modulation paths, and the modulation paths include an eighth radio frequency switch, a second mixer, a first dielectric low-pass filter, a first acoustic wave band-pass filter, a third amplifier, and a ninth radio frequency switch;

[0107] Among them, the RF switch is connected to the second mixer and the first dielectric low-pass filter respectively, the second mixer is connected to the first dielectric low-pass filter, the first dielectric low-pass filter is connected to the ninth RF switch, the second mixer is connected to the first acoustic surface bandpass filter, the first acoustic surface bandpass filter is connected to the third amplifier, and the third amplifier is connected to the ninth RF switch.

[0108] In the above embodiment, the eighth RF switch introduces the signal to be transmitted into the modulation path to ensure that the signal can be accurately transmitted to the subsequent modulation component. The output end of the eighth RF switch is connected to the second mixer and the first dielectric low-pass filter respectively, and the signal to be transmitted can be mixed by the second mixer or directly filtered by the first dielectric low-pass filter.

[0109] The second mixer mixes the signal to be transmitted with the local oscillator signal generated by the local oscillator to achieve frequency band modulation. The mixed signal will have a new frequency characteristic to meet the transmission requirements. The input end of the second mixer is connected to the eighth RF switch to receive the signal to be transmitted, and its output end is respectively connected to the first dielectric low-pass filter and the first SAW bandpass filter. The mixed signal can be further filtered through different filters.

[0110] The first dielectric low-pass filter is used to filter out high-frequency interference components and noise in the mixed signal to ensure the purity and stability of the signal. The input end of the first dielectric low-pass filter is connected to the eighth RF switch or the second mixer to receive the signal to be processed, and the output end is connected to the ninth RF switch to transmit the filtered signal to subsequent components.

[0111] The first SAW bandpass filter further filters out unnecessary frequency components in the mixed signal while retaining the signal within a specific frequency band. The first SAW bandpass filter usually has a narrower bandwidth and higher selectivity, which can ensure the transmission quality of the signal within the target frequency band. The input end of the first SAW bandpass filter is connected to the second mixer to receive the mixed signal, and its output end is connected to the third amplifier to amplify the filtered signal.

[0112] The third amplifier is used to amplify the filtered signal to improve the power and signal-to-noise ratio of the signal, so that the signal has sufficient power to be effectively transmitted. The input end of the third amplifier is connected to the first SAW bandpass filter to receive the filtered signal, and the output end is connected to the ninth RF switch to transmit the amplified signal to the subsequent transmission processing module.

[0113] The ninth RF switch, as the output end of the modulation path, is responsible for outputting the processed signal from the modulation path to ensure that the signal can be accurately transmitted to the subsequent transmission processing module. The input end of the ninth RF switch is respectively connected to the first dielectric low-pass filter and the third amplifier to receive the filtered and amplified signal, and its output end is connected to the subsequent transmission processing module to further transmit the processed signal.

[0114] See also Figure 8 , Figure 8 A schematic diagram of the structure of an embodiment of the filter amplifier circuit provided by the present invention. In some embodiments of the present invention, the filter amplifier circuit further includes: a fourth amplifier, a second attenuator, a second dielectric low-pass filter, a tenth radio frequency switch, and two-way power amplifiers;

[0115] Among them, the fourth amplifier, the second attenuator, the second dielectric low-pass filter, the tenth radio frequency switch, and the two power amplifiers are connected in sequence.

[0116] In the above embodiment, the fourth amplifier performs preliminary amplification processing on the signal to be transmitted, which helps to increase the power level of the signal and provide sufficient signal strength for subsequent signal processing. The input end of the fourth amplifier receives the output signal from the frequency band modulation circuit, and the output end thereof is connected to the second attenuator to transmit the amplified signal to the next component.

[0117] The second attenuator attenuates the amplified signal to control the power level of the signal, which helps prevent nonlinear distortion or equipment damage caused by excessive signal power. The input end of the second attenuator is connected to the fourth amplifier to receive the amplified signal, and the output end is connected to the second dielectric low-pass filter to transmit the attenuated signal to the next component.

[0118] The second dielectric low-pass filter is used to filter out high-frequency interference components and noise in the signal, ensure the purity and stability of the signal, and help improve the signal-to-noise ratio and transmission quality of the signal. The input end of the second dielectric low-pass filter is connected to the second attenuator to receive the attenuated signal, and the output end is connected to the tenth RF switch to transmit the filtered signal to the next component.

[0119] The tenth RF switch switches the filtered signal to one of the two power amplifiers for amplification processing, which helps to achieve signal redundancy backup and fault switching functions, and improve the reliability and stability of the device. The input end of the tenth RF switch is connected to the second dielectric low-pass filter to receive the filtered signal, and its output end is respectively connected to the two power amplifiers, and the switching selection is performed according to the device control signal.

[0120] The two-way power amplifier is used to further amplify the filtered signal to increase the signal transmission power and transmission distance, which helps to ensure that the signal has a sufficient power level during transmission to meet the communication requirements of the device. The input ends of the two-way power amplifier are respectively connected to the output end of the tenth RF switch to receive the switched signal, and the output end is connected to the subsequent transmitting antenna or transmission processing module to transmit the amplified signal.

[0121] See also Fig. 9 , Fig. 9 A schematic diagram of the structure of an embodiment of the control module provided by the present invention. In some embodiments of the present invention, the control module further includes: a low-frequency interface, a voltage stabilizing circuit, a power module and an FPGA control unit; the low-frequency interface is respectively connected to the voltage stabilizing circuit, the power module and the FPGA control unit; the power module is also connected to the FPGA control unit;

[0122] Among them, the low-frequency interface is used to receive external power supply voltage and upper control instructions;

[0123] The voltage stabilizing circuit is used to stabilize the external power supply voltage and send it to the transmitting channel module;

[0124] The power supply module is used to divide the external power supply voltage to supply power to the transmitting channel module, the receiving channel module and the FPGA control unit;

[0125] The FPGA control unit is used to control the transmitting channel module and the receiving channel module according to the upper control instructions.

[0126] In the above embodiment, the low-frequency interface is responsible for receiving the externally provided power supply voltage and the control instructions from the host computer. These instructions usually include the start, stop, parameter setting, etc. of the device, which are the basis for the control module to perform subsequent operations. The low-frequency interface is connected to the voltage stabilizing circuit, the power module and the FPGA control unit respectively. It transmits the received power supply voltage to the voltage stabilizing circuit and the power module for further processing, and transmits the control instructions to the FPGA control unit for analysis and execution.

[0127] The voltage stabilization circuit is responsible for stabilizing the external power supply voltage to ensure its stability and reliability. In wireless communication devices, voltage fluctuations may have a serious impact on the performance and stability of the device. Therefore, the existence of the voltage stabilization circuit is essential for the normal operation of the device. The input end of the voltage stabilization circuit is connected to the low-frequency interface to receive the external power supply voltage, and its output end is connected to the transmission channel module to transmit the stabilized voltage to the transmission channel module for use. At the same time, the voltage stabilization circuit may also provide a stable voltage source for other parts of the device through other connections.

[0128] The power module divides the external power supply voltage to meet the power supply requirements of different components in the device, including the transmitting channel module, receiving channel module, and FPGA control unit. Through precise voltage division, the power module can ensure that each component can obtain the appropriate power supply voltage, thereby ensuring the normal operation of the device. The input end of the power module is connected to the low-frequency interface to receive the external power supply voltage, and its output end is respectively connected to the transmitting channel module, receiving channel module, and FPGA control unit to provide them with the required power supply voltage.

[0129] The FPGA control unit is responsible for parsing and executing control instructions from the host computer, including the start, stop, parameter adjustment, etc. of the device. By parsing these instructions, the FPGA control unit can achieve precise control of key components such as the transmitting channel module and the receiving channel module. In addition, the FPGA control unit also has some additional functions, such as signal processing and data storage. The input end of the FPGA control unit is connected to the low-frequency interface to receive control instructions, and its output end is connected to the transmitting channel module and the receiving channel module respectively to control them by sending control signals. At the same time, the FPGA control unit may also be connected to components such as the power module to obtain the necessary supply voltage and status information.

[0130] It should be noted that the number of components in the present solution is for the convenience of describing the internal composition relationship of different modules. Therefore, there is no special marking of the number of components in the drawings of the present application. Through the above description of each module, circuit composition and connection relationship, technicians in this field can understand the composition and connection relationship of the present application based on the drawings and corresponding text descriptions.

[0131] In summary, the half-duplex ultra-wideband ultra-short wave radio frequency device provided by the present invention realizes the coverage of the ultra-wideband frequency band through the designed transmitting channel module and receiving channel module, and can perform radio frequency communication in a wider frequency range, thereby meeting the demand of ultra-wideband communication for the frequency band width, not only improving the flexibility and adaptability of communication, but also effectively reducing the influence of interference and noise on the signal. At the same time, the gain and filtering parameters of the transmitting channel module and the receiving channel module can be adjusted to improve the reception quality and anti-interference ability of the radio frequency signal, ensure the stable transmission of high-speed data signals, and improve the reliability and stability of communication. In addition, the present invention adopts modular design and flexible parameter control mechanism, simplifies the circuit structure, reduces the design complexity, and at the same time, the device has the characteristics of easy integration and expansion, can be easily connected and interoperated with other communication equipment or devices, and also realizes fast switching between receiving and transmitting states by integrating key components such as transceiver switching switches, thereby improving communication efficiency, not only reducing manufacturing costs, but also improving the maintainability and scalability of the device.

[0132] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0133] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0134] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0135] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0136] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of the implementation scheme of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

[0137] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0138] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A half-duplex ultra-wideband ultra-short wave radio frequency device, characterized in that: include: A receiving channel module, a control module, a transmitting channel module and a transceiver switch; the control module is connected to the receiving channel module, the transmitting channel module and the transceiver switch respectively; the transmitting channel module is also connected to the transceiver switch; the transceiver switch is also connected to the receiving channel module; Wherein, the receiving channel module is used to convert the received external RF input signal into an intermediate frequency signal under the control of the control module; The control module is used to adjust the processing parameters of the receiving channel module and the transmitting channel module, and generate a switching signal to send to the transceiver switching switch; The transmitting channel module is used to convert the signal to be transmitted into a radio frequency output signal under the control of the control module; The transmit / receive switch is used to switch between the receiving and transmitting states in response to the switching signal.

2. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 1, characterized in that: The receiving channel module also includes: an input power detection circuit, a filter group, a frequency conversion filter circuit and a LINK16 receiving circuit; the input power detection circuit is connected to the filter group and the LINK16 receiving circuit respectively; the LINK16 receiving circuit is also connected to the frequency conversion filter circuit; Wherein, the input power detection circuit is used to detect the initial power of the radio frequency input signal; The filter group is used to filter the detected radio frequency input signal; The frequency conversion filter circuit is used to convert and filter the filtered radio frequency input signal into a first intermediate frequency signal; The LINK16 receiving circuit is used to convert the frequency of the detected radio frequency input signal and filter it into a second intermediate frequency signal.

3. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 2, characterized in that: The input power detection circuit further includes: a limiter, a directional coupler, a logarithmic amplifier, a switch control circuit, a first low noise amplifier, a first low pass filter, a first attenuator, a first radio frequency switch and a second radio frequency switch; Among them, the limiter is connected to the directional coupler, the directional coupler is respectively connected to the first RF switch and the logarithmic amplifier, the logarithmic amplifier is connected to the switch switching control circuit, the switch switching control circuit is respectively connected to the first RF switch and the second RF switch, the first RF switch is respectively connected to the first low-noise amplifier and the first attenuator, the first low-noise amplifier is connected to the first low-pass filter, the first low-pass filter is connected to the second RF switch, and the first attenuator is connected to the second RF switch.

4. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 2, characterized in that: The LINK16 receiving circuit further includes: a power divider, a plurality of third radio frequency switches, a plurality of first cavity filters, a plurality of first amplifiers, a plurality of fourth radio frequency switches, and a plurality of first adjustable amplifiers; The power dividers are respectively connected to the plurality of third RF switches, the plurality of third RF switches are connected to the plurality of first amplifiers, the plurality of first amplifiers are connected to the plurality of fourth RF switches, and the plurality of fourth RF switches are connected to the plurality of first adjustable amplifiers.

5. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 2, characterized in that: The variable frequency filter circuit further includes: a fifth radio frequency switch, a second adjustable amplifier, a mixer, a second low-pass filter, a second amplifier, a sixth radio frequency switch, a plurality of second cavity filters, and a seventh radio frequency switch; Among them, the fifth RF switch, the second adjustable amplifier, the mixer, the second low-pass filter, the second amplifier, the sixth RF switch, the multiple second cavity filters, and the seventh RF switch are connected in sequence.

6. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 2, characterized in that: The filter group further includes: a plurality of LC filters; the plurality of LC filters are connected in parallel.

7. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 1, characterized in that: The transmitting channel module further includes: a frequency band modulation circuit, a filter amplifier circuit and a frequency filter group; the frequency band modulation circuit, the attenuation filter circuit and the frequency filter group are connected in sequence; Wherein, the frequency band modulation circuit is used to modulate the frequency band of the signal to be transmitted using multiple modes; The filtering and amplifying circuit is used to perform filtering and amplifying processing on the modulated signal to be transmitted; The frequency filter group is used to filter and combine the filtered and amplified signals to be transmitted using a preset frequency to obtain a radio frequency output signal.

8. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 7, characterized in that: The frequency band modulation circuit includes a plurality of modulation paths, and the modulation paths include an eighth radio frequency switch, a second mixer, a first dielectric low-pass filter, a first SAW band-pass filter, a third amplifier, and a ninth radio frequency switch; Among them, the RF switch is connected to the second mixer and the first dielectric low-pass filter respectively, the second mixer is connected to the first dielectric low-pass filter, the first dielectric low-pass filter is connected to the ninth RF switch, the second mixer is connected to the first surface acoustic bandpass filter, the first surface acoustic bandpass filter is connected to the third amplifier, and the third amplifier is connected to the ninth RF switch.

9. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 7, characterized in that: The filtering and amplifying circuit further includes: a fourth amplifier, a second attenuator, a second dielectric low-pass filter, a tenth radio frequency switch, and two-way power amplifiers; Among them, the fourth amplifier, the second attenuator, the second dielectric low-pass filter, the tenth radio frequency switch, and the two power amplifiers are connected in sequence.

10. The half-duplex ultra-wideband ultra-short wave radio frequency device according to claim 1, characterized in that: The control module further includes: a low-frequency interface, a voltage stabilizing circuit, a power module and an FPGA control unit; the low-frequency interface is connected to the voltage stabilizing circuit, the power module and the FPGA control unit respectively; the power module is also connected to the FPGA control unit; Wherein, the low-frequency interface is used to receive external power supply voltage and upper control instructions; The voltage stabilizing circuit is used to stabilize the external power supply voltage and send it to the transmitting channel module; The power supply module is used to divide the external power supply voltage to supply power to the transmitting channel module, the receiving channel module and the FPGA control unit; The FPGA control unit is used to control the transmitting channel module and the receiving channel module according to the upper control instruction.

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