Miniaturized selectable transmit receive frequency module

Abstract

This utility model relates to the field of VHF radio frequency front-end processing technology, and discloses a miniaturized selectable transceiver radio frequency module, which includes a transmitting channel, a receiving channel, a control module, and a power supply module. The transmitting channel includes a normal mode transmitting channel, a LINK16 frequency conversion transmitting channel, and a LINK16 non-frequency conversion transmitting channel. The receiving channel includes an VHF transceiver front-end receiving channel, a LINK16 fine receiving channel, and a LINK16 coarse receiving channel. The VHF transceiver front-end receiving channel is used to receive VHF transmitted by the normal mode transmitting channel; the LINK16 fine receiving channel is used to accurately receive the data link LINK16 transmitted by the LINK16 frequency conversion transmitting channel; and the LINK16 coarse receiving channel is used to coarsely receive the data link LINK16 transmitted by the LINK16 non-frequency conversion transmitting channel. This utility model enables the miniaturization of the radio frequency front-end processing module.

Description

Technical Field

[0001] This utility model relates to the field of ultra-shortwave radio frequency front-end processing technology, and in particular to a miniaturized selectable transceiver radio frequency module. Background Technology

[0002] With the continuous development of radio frequency (RF) technology, there is a need for modular RF equipment. This has led to the emergence of many RF modules, such as RF transceiver front-end modules, power amplifier modules, and frequency synthesizer modules. In the past, these products were large in size, consumed a lot of power, and had limited functionality, making them compatible with only a small number of types of communication and electronic equipment.

[0003] Existing RF front-end transceiver modules have the following defects:

[0004] 1) RF front-end transceiver modules can only be designed according to customized specifications, and general-purpose, reusable RF front-end transceiver modules cannot be established;

[0005] 2) Anti-interference technology and broadband RF scanning technology are not compatible in the same module. If the two technologies are designed in the same module, the devices cannot be shared, resulting in large size, high power consumption, and failure to meet miniaturization requirements.

[0006] 3) The same RF transceiver module cannot be compatible with the arbitrary selection function of filters with multiple bandwidths, and at the same time realize the reconnaissance function of ultra-wideband fast scanning.

[0007] It is evident that existing RF front-end modules have room for improvement. Their engineering architecture needs to be optimized to enhance their adaptability to the multi-functional requirements of a single device, reduce module size, and achieve miniaturization and cost reduction. Therefore, more reasonable technical solutions need to be proposed to address the technical problems existing in the current technology. Utility Model Content

[0008] To address the shortcomings of incorporating anti-interference technologies for key communication frequency bands such as VHF1, VHF2, UHF1, UHF2, EPLS, and LINK16, and ultra-wideband transceiver RF scanning technologies for reconnaissance and jamming equipment, into a single module, which suffers from high module design complexity, large module size, and high power consumption, this invention provides a miniaturized selectable transceiver RF module. This miniaturized multi-bandwidth multi-channel selectable transceiver RF module employs flexible frequency conversion reception and transmission methods, enabling multi-mode, multi-channel, and rapid channel mixing. It allows a single RF module to provide communication channels and reconnaissance / jamming channels with different waveforms, allowing the signal processing platform to select the appropriate channels, thus achieving miniaturization of the RF front-end processing module.

[0009] This utility model provides a miniaturized selectable transceiver radio frequency module, which includes a transmitting channel, a receiving channel, a control module, and a power supply module; the control module is used to control the transmitting channel to transmit signals to the receiving channel; the power supply module is used to supply power to the transmitting channel, the receiving channel, and the control module.

[0010] The transmitting channels include a normal mode transmitting channel, a LINK16 frequency conversion transmitting channel, and a LINK16 non-frequency conversion transmitting channel; the receiving channels include an ultra-shortwave transceiver front-end receiving channel, a LINK16 fine receiving channel, and a LINK16 coarse receiving channel; the ultra-shortwave transceiver front-end receiving channel, the LINK16 fine receiving channel, and the LINK16 coarse receiving channel all include an AGC front-end circuit.

[0011] The VHF transceiver front-end receiving channel is used to receive VHF transmitted by the normal mode transmitting channel; the LINK16 fine receiving channel is used to accurately receive the data link LINK16 transmitted by the LINK16 frequency conversion transmitting channel; the LINK16 coarse receiving channel is used to coarsely receive the data link LINK16 transmitted by the LINK16 non-frequency conversion transmitting channel.

[0012] The AGC front-end circuit is used to select different signal paths for the received signal based on the power of the signal received by the receiving channel, so that the signal enters the VHF transceiver front-end receiving channel, the LINK16 fine receiving channel, or the LINK16 coarse receiving channel.

[0013] Furthermore, in the receiving channel of the ultra-shortwave transceiver front end, the radio frequency signal enters the first filter amplifier group after the signal path is selected by the AGC front-end circuit from the radio frequency input port, and then enters the first filter amplifier group for filtering, amplification, and filtering after being selected by the first switch. After that, it enters the first mixer after being selected by the second switch. The first mixer mixes the received signal with the first local oscillator signal to obtain the first intermediate frequency signal. The first intermediate frequency signal then enters the first intermediate frequency filter amplifier group for filtering, amplification, filtering, and attenuation after being selected by the third switch, and then enters the second mixer. The second mixer mixes the received signal with the second local oscillator signal to obtain the second intermediate frequency signal. After being filtered and amplified by the first component, the second intermediate frequency signal enters the first switch filter group for filtering, and then enters the second component for amplification and filtering before being output.

[0014] Furthermore, the first filter amplifier group includes a first input switch, a first filter group, an amplifier group, a second filter group, and a first output switch; the first filter group and the second filter group have the same structure, both including a bandpass filter and a low-pass filter; the bandpass filters in the first filter group correspond one-to-one with the bandpass filters in the second filter group, and the low-pass filters in the first filter group correspond one-to-one with the low-pass filters in the second filter group; the amplifier group includes multiple amplifiers, which are respectively located between the first filter group and the second filter group.

[0015] The first intermediate frequency (IF) filter amplifier group includes a first IF filter, a first amplifier, a second IF filter, and a first programmable attenuator connected in sequence; the first component includes a third IF filter and a second amplifier connected in sequence; the first switch filter group includes a second input switch, an IF filter group, and a second output switch connected in sequence; the IF filter group includes multiple IF filters; the second component includes a third amplifier, a fourth IF filter, a second programmable attenuator, a fourth amplifier, and a low-pass filter connected in sequence.

[0016] Furthermore, in the LINK16 precision receiving channel, the radio frequency signal enters the first electrically adjustable filter amplifier group after the signal path is selected by the AGC front-end circuit from the radio frequency input port, and after being selected by the first switch, it is filtered, amplified, and filtered again before entering the first mixer through the second switch.

[0017] After the radio frequency signal is selected by the AGC front-end circuit from the radio frequency input port, it enters the first dielectric filter amplifier group for filtering, amplification and filtering after being selected by the first switch, and then enters the first mixer through the second switch.

[0018] The first mixer mixes the received signal with the first local oscillator signal to obtain the first intermediate frequency signal. The first intermediate frequency signal is selected by the third switch and then enters the intermediate frequency filter for filtering. After being filtered and amplified by the first component, it enters the first switch filter group for filtering, and then is amplified and filtered by the second component before being output.

[0019] Furthermore, the first electrically tunable filter amplifier group includes multiple branches, each branch including a third input switch, an electrically tunable filter, a sixth amplifier, an electrically tunable filter, and a third output switch.

[0020] The first dielectric filter amplifier group includes multiple branches, each branch including a fourth input switch, a first dielectric filter, a seventh amplifier, a second dielectric filter, and a fourth output switch connected in sequence.

[0021] The first component includes a third intermediate frequency filter and a second amplifier connected in sequence; the first switch filter group includes a second input switch, an intermediate frequency filter group, and a second output switch connected in sequence; the intermediate frequency filter group includes multiple intermediate frequency filters; the second component includes a third amplifier, a fourth intermediate frequency filter, a second programmable attenuator, a fourth amplifier, and a low-pass filter connected in sequence.

[0022] Furthermore, in the LINK16 coarse receiving channel, the radio frequency signal, after passing through the AGC front-end circuit to select the signal path from the radio frequency input port, is selected by the first switch, passes through the power divider, and then enters the first dielectric filter amplifier group for filtering, amplification, and filtering. Finally, it is output after passing through the first programmable filter group. The first dielectric filter amplifier group includes multiple branches, each of which includes a fourth input switch, a first dielectric filter, a seventh amplifier, a second dielectric filter, and a fourth output switch connected in sequence. The first programmable filter group includes multiple branches, each of which includes an eighth amplifier, a third programmable attenuator, a ninth amplifier, and a low-pass filter connected in sequence.

[0023] Furthermore, the AGC front-end circuit includes a first sub-switch, a low-pass filter, a second sub-switch, a resistor, and a logarithmic detector. The radio frequency signal enters the logarithmic detector through the resistor. After detection, the logarithmic detector controls the first and second sub-switches to select the radio frequency signal path according to the signal strength: one is that the radio frequency signal enters the tenth amplifier after being filtered by the low-pass filter after passing through the first sub-switch, and then enters the second sub-switch; the other is that the radio frequency signal passes through the first sub-switch and then goes directly to the second sub-switch.

[0024] Furthermore, in the normal mode transmission channel, the radio frequency signal enters the first branch through the first gating input switch, and the intermediate frequency signal enters the second branch through the first gating output switch, and is then output through the first gating output switch; in the first branch, the radio frequency signal is attenuated by the fourth programmable attenuator, filtered and amplified by the first low-pass filter amplifier group, and then filtered and amplified by the second low-pass filter amplifier group; wherein, the first low-pass filter amplifier group includes a first sub-gating switch, a low-pass filter group, a second sub-gating switch, and an eleventh amplifier connected in sequence; the structure of the second low-pass filter amplifier group is the same as the structure of the first low-pass filter amplifier.

[0025] In the second branch, the intermediate frequency (IF) signal is filtered by the fifth IF filter, attenuated by the fifth programmable attenuator, and then enters the third mixer via the second input gating switch. The third mixer mixes the received signal with the third local oscillator signal to obtain the radio frequency (RF) signal. The RF signal passes through the third input gating switch and enters the first filter attenuator group for filtering and attenuation, and then passes through the second filter attenuator group for filtering and attenuation. The first filter attenuator group includes a third sub-gating switch, a bandpass filter group, a programmable attenuator group, and a fourth sub-gating switch connected in sequence. The bandpass filter group includes multiple bandpass filters. The programmable attenuator group includes multiple programmable attenuators. The second filter attenuator group includes a twelfth amplifier, a first bandpass filter group, a programmable attenuator, and a thirteenth amplifier connected in sequence. The first bandpass filter group includes a fifth sub-gating switch, a bandpass filter group, and a sixth sub-gating switch connected in sequence. The bandpass filter group includes multiple bandpass filters.

[0026] Furthermore, in the LINK16 frequency converter transmission channel, the intermediate frequency signal enters the sixth intermediate frequency filter after being filtered by the second gating input switch, is attenuated by the programmable attenuator, and then enters the third mixer after being selected by the second output gating switch. The third mixer mixes the received signal with the third local oscillator signal to obtain the radio frequency signal. The radio frequency signal enters the programmable attenuator after being attenuated by the third input gating switch, and then enters the second dielectric filter amplifier group for filtering, amplification, and further filtering by the fourth input gating switch before entering the programmable attenuator for further attenuation. Afterward, it is amplified and filtered by the fourteenth amplifier and the third dielectric filter in sequence before being output. The second dielectric filter amplifier group includes multiple branches, and each branch includes a fourth dielectric filter, a fifteenth amplifier, and a fifth dielectric filter connected in sequence.

[0027] Furthermore, in the constant frequency transmission channel of LINK16, multiple radio frequency signals of different frequency bands pass through the first gating input switch, the second gating input switch, and the third direct channel, and then enter the programmable attenuator for attenuation via the fifth gating input switch; the radio frequency signal directly enters the programmable attenuator for attenuation via the fifth gating input switch; the attenuated signal enters the second dielectric filter amplifier group for filtering, amplification, and further filtering via the fourth input gating switch, and then enters the programmable attenuator for attenuation, and then passes through the fourteenth amplifier and the third dielectric filter in sequence for amplification and filtering before being output; wherein, the second dielectric filter amplifier group includes multiple branches, and each branch includes a fourth dielectric filter, a fifteenth amplifier, and a fifth dielectric filter connected in sequence.

[0028] Due to the adoption of the above technical solution, this utility model has the following advantages: it adopts a flexible frequency conversion receiving and frequency conversion transmitting method, multiple modes, multiple channels, and rapid channel mixing, so that communication channels and reconnaissance and interference channels of different waveforms are provided by a single radio frequency module, allowing the signal processing platform to select the channel at will, thereby realizing the miniaturization of the radio frequency front-end processing module. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 A block diagram of the receiving channel provided in an embodiment of this utility model;

[0031] Figure 2 A block diagram of the transmission channel provided in an embodiment of this utility model;

[0032] Figure 3 A block diagram of the receiving channel of the ultra-shortwave transceiver front end provided in an embodiment of this utility model;

[0033] Figure 4 A block diagram of the LINK16 fine receiver channel provided in an embodiment of this utility model;

[0034] Figure 5 A block diagram of the LINK16 coarse receiving channel provided in an embodiment of this utility model;

[0035] Figure 6 A block diagram of the receiving AGC front-end circuit provided in an embodiment of this utility model;

[0036] Figure 7 A block diagram of a normal mode transmission channel provided for an embodiment of this utility model;

[0037] Figure 8 A block diagram of the LINK16 frequency converter transmission channel provided in an embodiment of this utility model;

[0038] Figure 9 A block diagram of the LINK16 non-frequency transmission channel provided in this embodiment of the present invention. Detailed Implementation

[0039] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0041] To address the shortcomings of existing technologies, such as the incompatibility between anti-interference technology and broadband radio frequency scanning technology in the same module, where devices cannot be shared, the size is large, the power consumption is high, and miniaturization requirements cannot be met, the following optimizations and improvements are made to overcome these deficiencies.

[0042] This utility model provides an embodiment of a miniaturized selectable transceiver radio frequency module, which includes a transmitting channel, a receiving channel, a control module, and a power supply module; the control module is used to control the transmitting channel to transmit signals to the receiving channel; the power supply module is used to supply power to the transmitting channel, the receiving channel, and the control module.

[0043] The transmitting channels include a normal mode transmitting channel, a LINK16 frequency conversion transmitting channel, and a LINK16 non-frequency conversion transmitting channel; the receiving channels include an ultra-shortwave transceiver front-end receiving channel, a LINK16 fine receiving channel, and a LINK16 coarse receiving channel; the ultra-shortwave transceiver front-end receiving channel, the LINK16 fine receiving channel, and the LINK16 coarse receiving channel all include an AGC front-end circuit.

[0044] The VHF transceiver front-end receiving channel is used to receive VHF transmitted by the normal mode transmitting channel; the LINK16 fine receiving channel is used to accurately receive the data link LINK16 transmitted by the LINK16 frequency conversion transmitting channel; the LINK16 coarse receiving channel is used to coarsely receive the data link LINK16 transmitted by the LINK16 non-frequency conversion transmitting channel.

[0045] The AGC front-end circuit is used to select different signal paths for the received signal based on the power of the signal received by the receiving channel, so that the signal enters the VHF transceiver front-end receiving channel, the LINK16 fine receiving channel, or the LINK16 coarse receiving channel.

[0046] Optionally, in the receiving channel of the UHF transceiver front end, the RF signal, after passing through the RF input port and selecting the signal path via the AGC front-end circuit, enters the first filter amplifier group for filtering, amplification, and further filtering after being selected by the first switch. Then, it enters the first mixer after being selected by the second switch. The first mixer mixes the received signal with the first local oscillator signal to obtain the first intermediate frequency (IF) signal. The first IF signal then enters the first IF filter amplifier group for filtering, amplification, filtering, and attenuation after being selected by the third switch, and then enters the second mixer. The second mixer mixes the received signal with the second local oscillator signal to obtain the second IF signal. The second IF signal is filtered and amplified by the first component, then filtered by the first switch filter group, and finally amplified and filtered by the second component before being output.

[0047] Optionally, the first filter amplifier group includes a first input switch, a first filter group, an amplifier group, a second filter group, and a first output switch; the first filter group and the second filter group have the same structure, both including a bandpass filter and a low-pass filter; the bandpass filters in the first filter group correspond one-to-one with the bandpass filters in the second filter group, and the low-pass filters in the first filter group correspond one-to-one with the low-pass filters in the second filter group; the amplifier group includes multiple amplifiers, which are respectively located between the first filter group and the second filter group.

[0048] The first intermediate frequency (IF) filter amplifier group includes a first IF filter, a first amplifier, a second IF filter, and a first programmable attenuator connected in sequence; the first component includes a third IF filter and a second amplifier connected in sequence; the first switch filter group includes a second input switch, an IF filter group, and a second output switch connected in sequence; the IF filter group includes multiple IF filters; the second component includes a third amplifier, a fourth IF filter, a second programmable attenuator, a fourth amplifier, and a low-pass filter connected in sequence.

[0049] Optionally, in the LINK16 precision receiving channel, the radio frequency signal enters the first electrically adjustable filter amplifier group after the signal path is selected by the AGC front-end circuit from the radio frequency input port, and after being selected by the first switch, it is filtered, amplified, filtered again, and then enters the first mixer through the second switch.

[0050] After the radio frequency signal is selected by the AGC front-end circuit from the radio frequency input port, it enters the first dielectric filter amplifier group for filtering, amplification and filtering after being selected by the first switch, and then enters the first mixer through the second switch.

[0051] The first mixer mixes the received signal with the first local oscillator signal to obtain the first intermediate frequency signal. The first intermediate frequency signal is selected by the third switch and then enters the intermediate frequency filter for filtering. After being filtered and amplified by the first component, it enters the first switch filter group for filtering, and then is amplified and filtered by the second component before being output.

[0052] Optionally, the first electrically tunable filter amplifier group includes multiple branches, each branch including a third input switch, an electrically tunable filter, a sixth amplifier, an electrically tunable filter, and a third output switch.

[0053] The first dielectric filter amplifier group includes multiple branches, each branch including a fourth input switch, a first dielectric filter, a seventh amplifier, a second dielectric filter, and a fourth output switch connected in sequence;

[0054] The first component includes a third intermediate frequency filter and a second amplifier connected in sequence; the first switch filter group includes a second input switch, an intermediate frequency filter group, and a second output switch connected in sequence; the intermediate frequency filter group includes multiple intermediate frequency filters; the second component includes a third amplifier, a fourth intermediate frequency filter, a second programmable attenuator, a fourth amplifier, and a low-pass filter connected in sequence.

[0055] Optionally, in the LINK16 coarse receiving channel, the radio frequency signal is selected by the AGC front-end circuit from the radio frequency input port, then selected by the first switch, and then enters the first dielectric filter amplifier group for filtering, amplification, and filtering after passing through the power divider, and is output after passing through the first programmable filter group; the first dielectric filter amplifier group includes multiple branches, each branch including a fourth input switch, a first dielectric filter, a seventh amplifier, a second dielectric filter, and a fourth output switch connected in sequence; the first programmable filter group includes multiple branches, each branch including an eighth amplifier, a third programmable attenuator, a ninth amplifier, and a low-pass filter connected in sequence.

[0056] Optionally, the AGC front-end circuit includes a first sub-switch, a low-pass filter, a second sub-switch, a resistor, and a logarithmic detector. The radio frequency signal enters the logarithmic detector through the resistor. After detection, the logarithmic detector controls the first and second sub-switches to select the radio frequency signal path according to the signal strength: one is that the radio frequency signal enters the tenth amplifier after being filtered by the low-pass filter after passing through the first sub-switch, and then enters the second sub-switch; the other is that the radio frequency signal passes through the first sub-switch and then goes directly to the second sub-switch.

[0057] Optionally, in the normal mode transmission channel, the radio frequency signal enters the first branch through the first gating input switch, and the intermediate frequency signal enters the second branch through the first gating output switch, and is then output through the first gating output switch; in the first branch, the radio frequency signal is attenuated by the fourth programmable attenuator, filtered and amplified by the first low-pass filter amplifier group, and then filtered and amplified by the second low-pass filter amplifier group; wherein, the first low-pass filter amplifier group includes a first sub-gating switch, a low-pass filter group, a second sub-gating switch, and an eleventh amplifier connected in sequence; the structure of the second low-pass filter amplifier group is the same as the structure of the first low-pass filter amplifier.

[0058] In the second branch, the intermediate frequency (IF) signal is filtered by the fifth IF filter, attenuated by the fifth programmable attenuator, and then enters the third mixer via the second input gating switch. The third mixer mixes the received signal with the third local oscillator signal to obtain the radio frequency (RF) signal. The RF signal passes through the third input gating switch and enters the first filter attenuator group for filtering and attenuation, and then passes through the second filter attenuator group for filtering and attenuation. The first filter attenuator group includes a third sub-gating switch, a bandpass filter group, a programmable attenuator group, and a fourth sub-gating switch connected in sequence. The bandpass filter group includes multiple bandpass filters. The programmable attenuator group includes multiple programmable attenuators. The second filter attenuator group includes a twelfth amplifier, a first bandpass filter group, a programmable attenuator, and a thirteenth amplifier connected in sequence. The first bandpass filter group includes a fifth sub-gating switch, a bandpass filter group, and a sixth sub-gating switch connected in sequence. The bandpass filter group includes multiple bandpass filters.

[0059] Optionally, in the LINK16 frequency converter transmission channel, the intermediate frequency signal enters the sixth intermediate frequency filter after being filtered by the second gating input switch, is attenuated by the programmable attenuator, and then enters the third mixer after being passed through the second output gating switch. The third mixer mixes the received signal with the third local oscillator signal to obtain the radio frequency signal. The radio frequency signal enters the programmable attenuator after being attenuated by the third input gating switch, and then enters the second dielectric filter amplifier group for filtering, amplification, and further filtering by the fourth input gating switch before entering the programmable attenuator for further attenuation. After that, it is amplified and filtered by the fourteenth amplifier and the third dielectric filter in sequence before being output. The second dielectric filter amplifier group includes multiple branches, and each branch includes a fourth dielectric filter, a fifteenth amplifier, and a fifth dielectric filter connected in sequence.

[0060] Optionally, in the constant frequency transmission channel of LINK16, multiple radio frequency signals of different frequency bands pass through the first gating input switch, the second gating input switch, and the third direct channel, respectively, and then enter the programmable attenuator for attenuation via the fifth gating input switch; the radio frequency signal directly enters the programmable attenuator for attenuation via the fifth gating input switch; the attenuated signal enters the second dielectric filter amplifier group for filtering, amplification, and further filtering via the fourth input gating switch, and then enters the programmable attenuator for attenuation, and then passes through the fourteenth amplifier and the third dielectric filter in sequence for amplification and filtering before being output; wherein, the second dielectric filter amplifier group includes multiple branches, and each branch includes a fourth dielectric filter, a fifteenth amplifier, and a fifth dielectric filter connected in sequence.

[0061] In this embodiment, the receiving channel, transmitting channel, local oscillator section (providing the local oscillator signal), control module, and power module are located in different structural frames to shield the mutual radiation interference between the transmitting section, local oscillator section, power supply, and control section. To avoid affecting the receiving sensitivity of the transceiver front-end module in the receiving state, the receiving channel is designed on the top layer of the product and physically isolated by the structural frame at the farthest distance. At the same time, good grounding of each channel is ensured, thereby ensuring the isolation between channels in the receiving state. High-power devices are evenly distributed in the housing and fully in contact with the housing to prevent excessive local heat generation and achieve the best heat dissipation effect.

[0062] Optionally, in order to improve the speed of transmitting control commands and reduce the time wasted on communication, the control module (including the software part) uses an FPGA as the logic control chip inside the product to complete the protocol conversion function and the internal status return function.

[0063] Optionally, the power module uses high-efficiency DC-DC converters and low-dropout voltage regulators. This has several advantages: firstly, it reduces unnecessary power consumption; secondly, since the power consumed by the DC-DC converter and voltage regulator is primarily generated as heat, reducing the power consumed by these components extends their lifespan.

[0064] Preferably, in this embodiment, see Figure 1 , Figures 3 to 6In the technical solution of the receiving channel, when the UHF transceiver front end receives the signal, the 30-3000MHz RF signal passes through the AGC control circuit of the front end (selecting either direct pass or amplification by a low-noise amplifier) ​​from the RF input port, and then enters the 30-3000MHz four-segment filter group after being selected by a switch. After filtering, it is amplified in one stage, and then enters the filter group again for filtering. After being selected by a switch, it enters the first mixer, where it is mixed with the provided local oscillator signal (2290-3860MHz) to produce a 2260MHz intermediate frequency signal. After being amplified and filtered by two stages of intermediate frequency filters and amplifiers, it is sent to the second mixer, where it is mixed with the provided 2400MHz second local oscillator signal to produce a 140MHz second intermediate frequency signal. After being switched, it undergoes intermediate frequency filtering and amplification, and then the corresponding intermediate frequency filter (bandwidths include 60MHz, 6MHz, 2MHz, and 500kHz) is selected according to the signal bandwidth for filtering. After intermediate frequency amplification and filtering, it is amplified and low-pass filtered by a switch, and then the 140MHz intermediate frequency signal is output through RFout1.

[0065] During Link16 fine reception, the RF signal from the RF input port passes through the front-end AGC control circuit (selecting either direct pass or amplification by a low-noise amplifier). Signals of 30-88MHz, 108-174MHz, and 225-450MHz are selected by a switch to correspond to two stages of electrically tunable filters and amplified before being sent to the first mixer. Signals of 966-1011MHz, 1050-1068MHz, and 1110-1209MHz are selected by a switch to correspond to two stages of dielectric filters and amplified before being sent to the first mixer. This is compared with the signal provided by the local oscillator. The local oscillator signal (170-228MHz, 248-314MHz, 365-590MHz, 1106-1151MHz, 1190-1208MHz, 1250-1349MHz) is mixed to produce a 140MHz intermediate frequency signal. After passing through a switch, the signal undergoes intermediate frequency filtering and amplification. Then, an intermediate frequency filter with a corresponding bandwidth (bandwidths include 60MHz, 6MHz, 2MHz, and 500kHz) is selected according to the signal bandwidth for filtering. After intermediate frequency amplification and filtering, the signal is amplified again by a switch, low-pass filtered, and then output as a 140MHz intermediate frequency signal through RFout1.

[0066] During the coarse reception of Link16, the RF signal enters from the RF input port, passes through the front-end AGC control circuit (selecting either direct pass or amplification by a low-noise amplifier), and is then sent to the power divider via a switch. After passing through two stages of dielectric filters (966-1011MHz, 1050-1068MHz, 1110-1209MHz) and amplification, the signal is then switched again, amplified twice more, filtered by a low-pass filter, and finally output from RFout1, RFout2, and RFout3, corresponding to the 966-1011MHz, 1050-1068MHz, and 1110-1209MHz RF signals.

[0067] In all three receiving modes, a programmable attenuator is incorporated into the circuit for signal amplitude control to better distribute the gain at each stage. The module employs a well-designed RF front-end, high-performance first and second IF filters, and appropriate gain allocation. Furthermore, the front-end utilizes automatic fast AGC to ensure the module has a low noise figure, high dynamic range, and excellent anti-interference performance.

[0068] In this invention, the requirements of both broadband reception and anti-interference communication must be met simultaneously. Anti-interference communication features a low noise figure and a very large dynamic range, which, combined with automatic fast AGC, makes the module a high-performance receiving system. Such a low-noise, high-dynamic-range receiving system has extremely stringent requirements for anti-interference capability. If the anti-interference capability is poor, even with a low noise figure and a large dynamic range, the useful signal cannot be separated from numerous interference signals, rendering even the best receiving system useless. For anti-interference communication, there are three main problems in effectively filtering out these interferences. First, the interference frequency is close to the useful signal, resulting in a small relative bandwidth for the filter and making implementation difficult. Second, the interference signal power is high, requiring high stopband suppression of the filter, which increases the filter's manufacturing difficulty. Third, high stopband suppression inevitably leads to increased insertion loss, and due to the high sensitivity requirements of the entire system, filtering cannot be performed at the beginning of the system link. Based on the characteristics of each interference signal and considering the high sensitivity and large dynamic range requirements of the entire module, cross-modulation and sensitivity reduction (for the receiving branch) are employed. Since some interference signals that are close to the useful signal have high power, these signals must be filtered out at the beginning of the system. At the receiving front end, bandpass filters (1000MHz-1500MHz, 1500MHz-2200MHz, 2200MHz-3000MHz), low-pass filters (30MHz-1000MHz), electrically tunable filters (30-88MHz, 108-174MHz, 225-450MHz), and dielectric filters (966-1011MHz, 1050-1068MHz, 1110-1209MHz) are designed according to the receiving mode and signal. This ensures successful filtering of high-power interference signals near the useful signal and guarantees undistorted reception of the useful signal. Simultaneously, two intermediate frequency points are carefully designed to avoid frequency bands where image frequency and intermediate frequency suppression are difficult. Meanwhile, the 140MHz intermediate frequency is configured with multiple intermediate frequency bandwidths of 60MHz, 6MHz, 2MHz, and 500kHz to fully filter out spurious signals.

[0069] In this invention, to meet the requirement of a large dynamic range for the receiving channel, an automatic gain control mode is designed for the receiving channel, such as... Figure 1As shown, the signal input frequency range of the receiving channel is 30MHz to 3GHz. The input signal power is splittered by a 100kΩ resistor and then fed into a detector for detection and sampling. Based on the detection and sampling results, a switch is used to select between a direct path and a low-pass filter and low-noise amplifier path. When the input signal power is ≥-55dBm, the switch switches to the direct path; when the input signal power is ≤-55dBm, the switch switches to the low-pass filter and low-noise amplifier path. The switching time between the low-noise amplifier path and the direct path in this design is in the nanosecond range, supporting the switching time requirements of key AGC performance indicators.

[0070] Preferably, in this embodiment, see Figure 2 , Figures 7 to 9 The technical solution for the transmission channel requires multiple transmission modes: 30MHz~88MHz frequency conversion transmission, 88MHz~3000MHz direct amplification transmission, Link16 frequency conversion transmission, and Link16 non-frequency conversion transmission. Simultaneously, the transmitted signal covers a wide frequency range, resulting in complex harmonic and intermodulation interference. Therefore, the transmission channel technical solution employs a multi-transmission mode design. In normal mode transmission, a 310MHz intermediate frequency signal is input to RFin1 in the 30MHz~88MHz band. After being selected by a switch, it is sent to a 310MHz filter and programmable attenuation control. Then, it is sent to a mixer, where it is mixed with the provided local oscillator signal (340-398MHz) to produce a 30MHz~88MHz RF signal. This signal is then selected by a switch for two-stage segmented filtering, two-stage amplification, and programmable attenuation control. Finally, it outputs a 30MHz~88MHz RF signal (RFout). This frequency conversion scheme balances various performance indicators and minimizes the impact of intermodulation interference on the output signal quality. A segmented filter bank is designed in the output section to further suppress the negative impact of harmonics and high-order intermodulation on the transmission channel. The 88MHz~3000MHz frequency band adopts a direct-amplifier transmission scheme. In order to suppress intermediate frequency harmonics and noise to the maximum extent, the transmission channel is designed with a multi-channel filter bank. The RFin1 input 88MHz~3000MHz RF signal is selected by a switch and enters a two-stage segmented filter bank and a two-stage amplification. After that, the RFout 88MHz~3000MHz RF signal is output by a switch.

[0071] During Link16 frequency conversion transmission, a 310MHz intermediate frequency signal is input to RFin2. After being selected by a switch, it is fed into a 310MHz filter and programmable attenuation control. Then, it is fed into a mixer, where it is mixed with the provided local oscillator signal (1276-1519MHz) to produce a 966-1209MHz radio frequency signal. This signal is then selected by a switch to enter programmable attenuation control, and then further selected by a switch to enter a two-stage segmented dielectric filter (966-1086MHz, 1086-1209MHz) and amplifier for filtering and amplification. After further amplification and filtering by the dielectric filter (966-1209MHz), the signal is output as RFout (966-1209MHz). This frequency conversion scheme balances various performance indicators and minimizes the impact of mixing spurious signals on the output signal quality. The frequency conversion output incorporates a segmented filter bank to filter out local oscillator leakage and high-order intermodulation products.

[0072] When Link16 transmits at a constant frequency, RFin1 receives a 966-1011MHz RF signal, RFin2 receives a 1050-1068MHz RF signal, and RFin3 receives a 1100-1209MHz RF signal. The three signals are combined by a switch and then sent to a programmable attenuation control. After being selected by a switch, they enter a two-stage segmented dielectric filter (966-1086MHz, 1086-1209MHz) and an amplifier for filtering and amplification. After further amplification and filtering by a dielectric filter (966-1209MHz), the RFout signal (966-1209MHz) is output by a switch.

[0073] The aforementioned miniaturized selectable transceiver RF module (miniaturized multi-band, multi-bandwidth, multi-channel selectable transceiver RF module) weighs approximately 1 kg and has a size of less than 160 mm. 110mm The noise figure of the VHF transceiver front-end receiving channel is designed to be no more than 7dB in the 30MHz~450MHz band, no more than 8dB in the 450MHz~1200MHz band, and no more than 9dB in the 1200MHz~3000MHz band. The noise figure of the LINK16 fine receiving channel is no more than 7.5dB in the 966MHz~1209MHz band, and the noise figure of the LINK16 coarse receiving channel is no more than 7dB in the 966MHz~1209MHz band. The gain of all receiving channels is designed to be within the range of 40dB±3dB, and is controlled by a programmable attenuator to meet the gain requirements of the receiving channels. The gain of all transmitting channels is designed to be within the range of 20dB±2dB, and is controlled by a programmable attenuator to meet the gain requirements of the transmitting channels.

[0074] In this embodiment, the filters in the RF link of the miniaturized selectable transceiver RF module can be selectively installed according to actual usage. Filters requiring RF switch selection of frequency band or bandwidth should be designed separately (especially electrically tunable filters) for easy selective installation. The receiver-side intermediate frequency filter supports selectable bandwidths of 60MHz, 6MHz, 2MHz, and 500kHz. LINK16 data link communication is supported, with a frequency hopping rate of 76923 hop / s.

[0075] In this embodiment, the miniaturized selectable transceiver RF module mainly performs reception amplification, mixing, and frequency selection of RF signals in key frequency bands such as 30MHz~88MHz, 108MHz~174MHz, 225MHz~450MHz, and 966MHz~1209MHz; reception amplification, mixing, and frequency selection of RF signals in the full-band 30MHz~3000MHz; transmission amplification, mixing, and frequency selection of RF signals in key frequency bands such as 30MHz~88MHz and 966MHz~1209MHz; and transmission amplification and frequency selection of RF signals in the full-band 88MHz~3000MHz.

[0076] In this embodiment, the miniaturized selectable transceiver RF module's receiving channel is mainly divided into a normal receiving mode, a LINK16 coarse receiving mode, and a LINK16 fine receiving mode. When the miniaturized selectable transceiver RF module is in normal receiving mode, the receiving channel adopts superheterodyne frequency conversion to improve the receiver's sensitivity, selectivity, and anti-interference capability. The front-end RF end uses appropriate filters to suppress image frequency signals and intermediate frequency signals. The intermediate frequency is designed to be 140MHz, and the intermediate frequency bandwidth is designed to be 500KHz, 2MHz, 6MHz, and 60MHz according to requirements.

[0077] In this embodiment, the miniaturized selectable transceiver RF module's transmission channel is mainly divided into a normal transmission mode, a LINK16 frequency conversion transmission mode, and a LINK16 non-frequency conversion transmission mode. In normal transmission mode: the 30MHz–88MHz frequency band undergoes one mixing and two-stage segmented filtering, followed by amplification before outputting the transmitted RF signal; the 88MHz–3000MHz frequency band uses two-stage segmented filtering and direct amplification before outputting the transmitted RF signal. The LINK16 frequency conversion transmission mode uses one mixing and two-stage segmented dielectric filtering, followed by amplification before outputting the transmitted RF signal; the LINK16 non-frequency conversion transmission mode directly uses two-stage segmented dielectric filtering and amplification before outputting the transmitted RF signal.

[0078] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of protection of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the scope of protection of this utility model.

Claims

1. A miniaturized selectable transceiver radio frequency module, characterized in that, It includes a transmit channel, a receive channel, a control module, and a power module; the control module is used to control the transmit channel to transmit signals to the receive channel; the power module is used to supply power to the transmit channel, the receive channel, and the control module; The transmitting channels include a normal mode transmitting channel, a LINK16 frequency conversion transmitting channel, and a LINK16 non-frequency conversion transmitting channel; the receiving channels include an VHF transceiver front-end receiving channel, a LINK16 fine receiving channel, and a LINK16 coarse receiving channel. The VHF transceiver front-end receiving channel, the LINK16 fine receiving channel, and the LINK16 coarse receiving channel all include AGC front-end circuitry. The VHF transceiver front-end receiving channel is used to receive VHF transmitted by the normal mode transmitting channel; the LINK16 fine receiving channel is used to accurately receive the data link LINK16 transmitted by the LINK16 frequency conversion transmitting channel; the LINK16 coarse receiving channel is used to coarsely receive the data link LINK16 transmitted by the LINK16 non-frequency conversion transmitting channel. The AGC front-end circuit is used to select different signal paths for the received signal based on the power of the signal received by the receiving channel, so that the signal enters the VHF transceiver front-end receiving channel, the LINK16 fine receiving channel, or the LINK16 coarse receiving channel.

2. The miniaturized selectable transceiver RF module according to claim 1, characterized in that, In the receiving channel of the ultra-shortwave transceiver front end, the radio frequency signal enters the first filter amplifier group after the signal path is selected by the AGC front-end circuit from the radio frequency input port. After being selected by the first switch, it enters the first filter amplifier group for filtering, amplification, and filtering. Then, it enters the first mixer after being selected by the second switch. The first mixer mixes the received signal with the first local oscillator signal to obtain the first intermediate frequency signal. The first intermediate frequency signal then enters the first intermediate frequency filter amplifier group for filtering, amplification, filtering, and attenuation after being selected by the third switch. Then, it enters the second mixer, which mixes the received signal with the second local oscillator signal to obtain the second intermediate frequency signal. After being filtered and amplified by the first component, the second intermediate frequency signal enters the first switch filter group for filtering. After being amplified and filtered by the second component, it is output.

3. The miniaturized selectable transceiver radio frequency module according to claim 2, characterized in that, The first filter amplifier group includes a first input switch, a first filter group, an amplifier group, a second filter group, and a first output switch; the first filter group and the second filter group have the same structure, both including a bandpass filter and a low-pass filter; the bandpass filters in the first filter group correspond one-to-one with the bandpass filters in the second filter group, and the low-pass filters in the first filter group correspond one-to-one with the low-pass filters in the second filter group; the amplifier group includes multiple amplifiers, which are located between the first filter group and the second filter group respectively; The first intermediate frequency (IF) filter amplifier group includes a first IF filter, a first amplifier, a second IF filter, and a first programmable attenuator connected in sequence; the first component includes a third IF filter and a second amplifier connected in sequence; the first switch filter group includes a second input switch, an IF filter group, and a second output switch connected in sequence; the IF filter group includes multiple IF filters; the second component includes a third amplifier, a fourth IF filter, a second programmable attenuator, a fourth amplifier, and a low-pass filter connected in sequence.

4. The miniaturized selectable transceiver RF module according to claim 1, characterized in that, In the LINK16 fine receiver channel, the radio frequency signal enters the first electrically adjustable filter amplifier group after the signal path is selected by the AGC front-end circuit from the radio frequency input port, and after being selected by the first switch, it is filtered, amplified, filtered again, and then enters the first mixer through the second switch. After the radio frequency signal is selected by the AGC front-end circuit from the radio frequency input port, it enters the first dielectric filter amplifier group for filtering, amplification and filtering after being selected by the first switch, and then enters the first mixer through the second switch. The first mixer mixes the received signal with the first local oscillator signal to obtain the first intermediate frequency signal. The first intermediate frequency signal is selected by the third switch and then enters the intermediate frequency filter for filtering. After being filtered and amplified by the first component, it enters the first switch filter group for filtering, and then is amplified and filtered by the second component before being output.

5. The miniaturized selectable transceiver radio frequency module according to claim 4, characterized in that, The first electrically tunable filter amplifier group includes multiple branches, and each branch includes a third input switch, an electrically tunable filter, a sixth amplifier, an electrically tunable filter, and a third output switch; The first dielectric filter amplifier group includes multiple branches, each branch including a fourth input switch, a first dielectric filter, a seventh amplifier, a second dielectric filter, and a fourth output switch connected in sequence; The first component includes a third intermediate frequency filter and a second amplifier connected in sequence; the first switch filter group includes a second input switch, an intermediate frequency filter group, and a second output switch connected in sequence; the intermediate frequency filter group includes multiple intermediate frequency filters; the second component includes a third amplifier, a fourth intermediate frequency filter, a second programmable attenuator, a fourth amplifier, and a low-pass filter connected in sequence.

6. The miniaturized selectable transceiver radio frequency module according to claim 1, characterized in that, In the LINK16 coarse receiving channel, the radio frequency signal is selected from the radio frequency input port by the AGC front-end circuit, then selected by the first switch, then enters the first dielectric filter amplifier group for filtering, amplification and filtering after passing through the power divider, and finally outputs after passing through the first programmable filter group. The first dielectric filter amplifier group includes multiple branches, each branch including a fourth input switch, a first dielectric filter, a seventh amplifier, a second dielectric filter, and a fourth output switch connected in sequence; the first programmable filter group includes multiple branches, each branch including an eighth amplifier, a third programmable attenuator, a ninth amplifier, and a low-pass filter connected in sequence.

7. The miniaturized selectable transceiver radio frequency module according to any one of claims 1-6, characterized in that, The AGC front-end circuit includes a first sub-switch, a low-pass filter, a second sub-switch, a resistor, and a logarithmic detector. The radio frequency signal enters the logarithmic detector through the resistor. After detection, the logarithmic detector controls the first and second sub-switches to select the radio frequency signal path according to the signal strength: one is that the radio frequency signal enters the tenth amplifier after being filtered by the low-pass filter after passing through the first sub-switch, and then enters the second sub-switch; the other is that the radio frequency signal passes through the first sub-switch and then goes directly to the second sub-switch.

8. The miniaturized selectable transceiver radio frequency module according to claim 1, characterized in that, In the normal mode transmission channel, the radio frequency (RF) signal enters the first branch via the first gating input switch, and the intermediate frequency (IF) signal enters the second branch via the first gating output switch, and is then output via the first gating output switch. In the first branch, the RF signal is attenuated by the fourth programmable attenuator, filtered and amplified by the first low-pass filter amplifier group, and then filtered and amplified by the second low-pass filter amplifier group. The first low-pass filter amplifier group includes a first sub-gating switch, a low-pass filter group, a second sub-gating switch, and an eleventh amplifier connected in sequence. The structure of the second low-pass filter amplifier group is the same as that of the first low-pass filter amplifier group. In the second branch, the intermediate frequency (IF) signal is filtered by the fifth IF filter, attenuated by the fifth programmable attenuator, and then enters the third mixer via the second input gating switch. The third mixer mixes the received signal with the third local oscillator signal to obtain the radio frequency (RF) signal. The RF signal passes through the third input gating switch and enters the first filter attenuator group for filtering and attenuation, and then passes through the second filter attenuator group for filtering and attenuation. The first filter attenuator group includes a third sub-gating switch, a bandpass filter group, a programmable attenuator group, and a fourth sub-gating switch connected in sequence. The bandpass filter group includes multiple bandpass filters. The programmable attenuator group includes multiple programmable attenuators. The second filter attenuator group includes a twelfth amplifier, a first bandpass filter group, a programmable attenuator, and a thirteenth amplifier connected in sequence. The first bandpass filter group includes a fifth sub-gating switch, a bandpass filter group, and a sixth sub-gating switch connected in sequence. The bandpass filter group includes multiple bandpass filters.

9. The miniaturized selectable transceiver radio frequency module according to claim 1, characterized in that, In the LINK16 frequency converter transmission channel, the intermediate frequency signal enters the sixth intermediate frequency filter after being filtered by the second gating input switch, is attenuated by the programmable attenuator, and then enters the third mixer after being selected by the second output gating switch. The third mixer mixes the received signal with the third local oscillator signal to obtain the radio frequency signal. The radio frequency signal enters the programmable attenuator after being attenuated by the third input gating switch, and then enters the second dielectric filter amplifier group for filtering, amplification, and further filtering by the fourth input gating switch before entering the programmable attenuator for further attenuation. After that, it is amplified and filtered by the fourteenth amplifier and the third dielectric filter in sequence before being output. The second dielectric filter amplifier group includes multiple branches, and each branch includes a fourth dielectric filter, a fifteenth amplifier, and a fifth dielectric filter connected in sequence.

10. The miniaturized selectable transceiver radio frequency module according to claim 4, characterized in that, In the LINK16 constant frequency transmission channel, multiple radio frequency signals of different frequency bands pass through the first gating input switch, the second gating input switch, and the third direct channel, and then enter the programmable attenuator for attenuation via the fifth gating input switch; the radio frequency signal directly enters the programmable attenuator for attenuation via the fifth gating input switch; the attenuated signal enters the second dielectric filter amplifier group for filtering, amplification, and further filtering via the fourth input gating switch, and then enters the programmable attenuator for attenuation, and then passes through the fourteenth amplifier and the third dielectric filter for amplification and filtering before being output; wherein, the second dielectric filter amplifier group includes multiple branches, each branch including the fourth dielectric filter, the fifteenth amplifier, and the fifth dielectric filter connected in sequence.

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