W-band transceiver assembly

Abstract

The application discloses a W-band transceiving assembly, comprising a frequency source unit, a transmitting unit and a receiving down-conversion unit, wherein the frequency source unit is used for receiving a reference signal and outputting an X-band sweep frequency source signal to the transmitting unit; the transmitting unit is used for converting the input X-band sweep frequency source signal into a W-band signal and outputting the W-band signal to the receiving down-conversion unit; and the receiving down-conversion unit is used for converting a received W-band signal into an intermediate frequency signal and outputting the intermediate frequency signal. When the assembly is used, the problems of low frequency band, low and unstable transmission data rate and short detection distance of the W-band transceiving assembly in the prior art are overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of frequency converter, in particular to a W-band transceiver assembly. BACKGROUND

[0002] Microwave communication is the most commonly used communication method in military and civilian communication systems. As a high-frequency front-end subsystem, the millimeter wave transceiver assembly is an important part of radar and satellite communication systems.

[0003] Due to the characteristics of extremely wide frequency band, millimeter waves can carry rich information resources, and because the wavelength is short, the millimeter wave related products are small in size and can be used in various occasions. Therefore, the W-band transceiver assembly has become one of the important devices in the microwave communication system.

[0004] The existing W-band transceiver assembly in the prior art has the problems of low frequency band, low and unstable transmission data rate, and short detection distance.

[0005] Therefore, it is an urgent problem to be solved by the present application to provide a W-band transceiver assembly which can realize high frequency band, fast and stable transmission data rate, and long detection distance, and has efficient power amplification function to ensure the range and coverage area of the transmission signal. SUMMARY

[0006] In view of the above technical problems, the purpose of the present application is to overcome the problems of low frequency band, low and unstable transmission data rate, and short detection distance of the existing W-band transceiver assembly in the prior art, so as to provide a W-band transceiver assembly which can realize high frequency band, fast and stable transmission data rate, and long detection distance, and has efficient power amplification function to ensure the range and coverage area of the transmission signal.

[0007] In order to achieve the above purpose, the present application provides a W-band transceiver assembly, which comprises a frequency source unit, a transmitting unit and a receiving down-conversion unit, wherein,

[0008] The frequency source unit is used for receiving a reference signal and outputting an X-band sweep source signal to the transmitting unit, the transmitting unit is used for converting the input X-band sweep source signal into a W-band signal and outputting it to the receiving down-conversion unit, and the receiving down-conversion unit is used for converting the received W-band signal into an intermediate frequency signal and outputting it.

[0009] Preferably, the frequency source unit comprises a DDS module, a local oscillator module and a mixing module.

[0010] The reference signal is output to the DDS module and the local oscillator module after passing through a first amplifier, a first filter and a power divider in sequence.

[0011] The DDS module is configured to convert the reference signal into a DDS signal output, and the local oscillator module is configured to convert the reference signal into a local oscillator signal output.

[0012] The mixing module is configured to receive the DDS signal and the local oscillator signal, mix them, and filter the mixed signal to obtain a mixing output signal required by the transmitting unit.

[0013] Preferably, the DDS module comprises a first frequency synthesizer, a first loop filter, a DDS, and a switch filter bank.

[0014] The first frequency synthesizer matches the point frequency source signal generated by the first loop filter to input into the DDS as a clock signal, converts it into a fast frequency hopping signal to output as a DDS signal, and the switch filter bank is configured to divide the DDS signal into at least two segments by switching, filter each segment of the fast frequency hopping signal, and output the segments.

[0015] The first loop filter adopts a passive LC low-pass filter.

[0016] Preferably, the switch filter bank comprises a first switch, a second switch, a first band-pass filter, and a second band-pass filter.

[0017] The DDS signal is divided into two segments by the first switch and input into the first band-pass filter and the second band-pass filter for filtering, and the filtered DDS signal is output by the second switch; wherein,

[0018] The first band-pass filter and the second band-pass filter both adopt a ceramic band-pass filter with an LTCC structure.

[0019] Preferably, the local oscillator module comprises a second frequency synthesizer, a second loop filter, and a second amplifier.

[0020] The second frequency synthesizer matches the reference signal generated by the second loop filter to convert it into an X-band signal to output as a local oscillator signal, and the signal is amplified by the second amplifier and input into the mixing module; the second loop filter adopts a passive LC low-pass filter.

[0021] Preferably, the mixing module comprises:

[0022] a first mixer configured to mix the DDS signal and the local oscillator signal to obtain a mixed signal; and

[0023] a second filter configured to filter the mixed signal to obtain a mixing output signal; wherein,

[0024] The second filter adopts a cavity filter.

[0025] Preferably, the transmitting unit comprises: a third amplifier, an octupler, a third filter, a fourth amplifier, an attenuator and a fifth amplifier connected in sequence; wherein,

[0026] The X-band sweep source signal output by the frequency source unit is amplified by the third amplifier and the octupler to obtain a W-band signal, and then is filtered by the third filter to suppress spurious, and then is amplified in power by the third filter, the fourth amplifier, the attenuator and the fifth amplifier in sequence, and then is transmitted to the air by the antenna.

[0027] The third filter is a microstrip hairpin filter.

[0028] Preferably, the receiving and down-converting unit comprises: a high-frequency signal receiving module, an input radio frequency signal module and a down-converting module; wherein,

[0029] The high-frequency signal receiving module is connected with the output port of the transmitting unit through an antenna and a circulator, so as to receive the W-band signal output by the transmitting unit, the input radio frequency signal module is connected with an external radio frequency signal input, and the down-converting module down-converts the output signal of the high-frequency signal receiving module and the output signal of the input radio frequency signal module to an intermediate frequency signal.

[0030] Preferably, the high-frequency signal receiving module comprises: a sixth amplifier connected with the antenna and the circulator;

[0031] The input radio frequency signal module comprises: a seventh amplifier, a second attenuator and an eighth amplifier connected in sequence;

[0032] The down-converting module comprises: a second mixer, a ninth amplifier, a digital control attenuator, a tenth amplifier and a fourth filter connected in sequence, and the second mixer is further connected with the sixth amplifier and the eighth amplifier respectively;

[0033] The high-frequency signal receiving module and the transmitting unit share the antenna.

[0034] The fourth filter is an LC low-pass filter.

[0035] Preferably, the W-band transceiver assembly further comprises: a control unit connected with the frequency source unit and the receiving and down-converting unit respectively; wherein,

[0036] The control unit is used for converting the command sent by the upper computer into a communication command to the single-chip microcomputer, and the single-chip microcomputer sends a time sequence control signal to the SLK and SDI pins of each unit to control the first frequency synthesizer and the second frequency synthesizer to output corresponding frequency points, control the on-off time of the switch filter group and the attenuation of the receiving down-conversion unit, and feed back the running state of each unit to the upper computer.

[0037] According to the technical scheme, the W-band transceiving assembly can realize output of high-frequency W-band range through frequency multiplication of low-frequency X-band input, and output of low-frequency intermediate frequency range through frequency down-conversion of high-frequency W-band input, and the intermediate frequency output gain is adjustable, and the noise coefficient and the stray output are small.

[0038] Other features and advantages of the present application will be described in detail in the following detailed description section; and the parts not involved in the present application are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and together with the following detailed description, serve to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0040] Figure 1 is a structure block diagram of the W-band transceiving assembly provided in a preferred embodiment of the present application;

[0041] Figure 2 is a structure block diagram of the frequency source unit provided in a preferred embodiment of the present application;

[0042] Figure 3 is a structure block diagram of the switch filter group provided in a preferred embodiment of the present application;

[0043] Figure 4 is a structure block diagram of the transmitting unit provided in a preferred embodiment of the present application;

[0044] Figure 5 is a structure block diagram of the receiving down-conversion unit provided in a preferred embodiment of the present application;

[0045] Figure 6 is a principle block diagram of the control unit provided in a preferred embodiment of the present application.

[0046] EXPLANATION OF REFERENCE NUMERALS

[0047] 1 frequency source unit 2 transmitting unit

[0048] 3 receiving down-conversion unit 4 control unit

[0049] 101 DDS module 102 local oscillator module

[0050] 103 mixing module 104 first amplifier

[0051] 105 first filter 106 power divider

[0052] 201 third amplifier 202 octupler

[0053] 203 third filter 204 first attenuator

[0054] 205 fifth amplifier 206 circulator

[0055] 207 antenna 301 sixth amplifier

[0056] 302 second mixer 303 ninth amplifier

[0057] 304 digitally controlled attenuator 305 tenth amplifier

[0058] 306 fourth filter 307 eighth amplifier

[0059] 308 second attenuator 309 seventh amplifier

[0060] 10101 first frequency synthesizer 10102 first loop filter

[0061] 10103 DDS 10104 switched filter bank

[0062] 10201 second loop filter 10202 second frequency synthesizer

[0063] 10203 second amplifier 10301 first mixer

[0064] 10302 second filter 101041 first switch

[0065] 101042 first band pass filter 101043 second band pass filter

[0066] 101044 second switch 401 serial port controller

[0067] 402 logic controller DETAILED DESCRIPTION

[0068] The specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0069] As Figure 1As shown, the application provides a W-band transceiver assembly, which comprises a frequency source unit 1, a transmitting unit 2 and a receiving down-conversion unit 3; wherein,

[0070] The frequency source unit 1 is used for receiving a reference signal and outputting an X-band sweep source signal to the transmitting unit 2, the transmitting unit 2 is used for converting the input X-band sweep source signal into a W-band signal output to the receiving down-conversion unit 3, and the receiving down-conversion unit 3 is used for converting the received W-band signal into an intermediate frequency signal output.

[0071] In the above scheme, when the W-band transceiver assembly is used, first, the reference signal is input into the frequency source unit 1 for processing, the frequency source unit 1 outputs an X-band sweep source signal, then the transmitting unit 2 is used to convert the X-band sweep source signal into a W-band signal to realize that the lower input frequency of the X-band is output as a high-frequency W-band range through frequency multiplication, finally, the receiving down-conversion unit 3 is used to process the signal to realize that the high input frequency of the W-band signal is output as a low-frequency intermediate frequency range through down-conversion, and the intermediate frequency output gain is adjustable, and in the process of the signal, filtering and other operations are also performed to ensure that the noise coefficient and the spurious output are small,

[0072] As Figure 2 shown, in a preferred embodiment of the application, the frequency source unit 1 comprises a DDS module 101, an oscillator module 102 and a mixing module 103;

[0073] The reference signal is output to the DDS module 101 and the oscillator module 102 after sequentially passing through the first amplifier 104, the first filter 105 and the power divider 106; the DDS module 101 is used for converting the reference signal into a DDS signal output, and the oscillator module 102 is used for converting the reference signal into an oscillator signal output; the mixing module 103 is used for receiving the DDS signal and the oscillator signal to mix them and filter the mixed signal to obtain the mixed output signal required by the transmitting unit; wherein,

[0074] In the above scheme, the frequency source unit 1 is mainly used for processing the reference signal to obtain the X-band sweep source signal, specifically: the reference signal is processed by the first amplifier 104, the first filter 105 and the power divider 106 in turn, so as to divide the reference signal into two paths, one of which is input into the DDS module 101 for processing, and the other of which is input into the local oscillator module 102 for processing; wherein the DDS module 101 processes the reference signal to obtain the DDS signal of the fast frequency hopping signal, and the local oscillator module 102 processes the signal to obtain the local oscillator signal of the X-band signal, and then outputs the two signals after mixing and fusion by the mixing module 103, so as to facilitate the subsequent signal processing work.

[0075] As shown in the preferred embodiment of the present application, Figure 1 the DDS module 101 comprises: a first frequency synthesizer 10101, a first loop filter 10102, a DDS 10103 and a switch filter bank 10104;

[0076] The first frequency synthesizer 10101 matches the point frequency source signal generated by the first loop filter 10102 to input into the DDS 10103 as a clock signal, so as to convert into a fast frequency hopping signal to output as a DDS signal, the switch filter bank 10104 is used to divide the DDS signal into at least two segments by switching, and each segment of the fast frequency hopping signal is filtered and segmented output; the first loop filter 10102 and the second loop filter 10201 both adopt a passive LC low-pass filter; the local oscillator module 102 comprises: a second frequency synthesizer 10202, a second loop filter 10201 and a second amplifier 10203; the second frequency synthesizer 10202 matches the reference signal generated by the second loop filter 10201 to convert into an X-band signal as a local oscillator signal output, and input into the mixing module 103 after amplification by the second amplifier 10203.

[0077] In the above scheme, DDS 10103 refers to a direct digital frequency synthesizer, which inputs a reference clock signal (generated by the first frequency synthesizer) to generate a fast frequency hopping signal, which is the core device of the DDS module 101, to convert into a fast frequency hopping signal to output as a DDS signal, and then the switch filter bank 10104 divides the DDS output into two segments by switching, each of which is connected to a one-level LTCC structure band-pass filter, and then outputs by switching, so as to filter out the large spurs in the band by the switching segmentation mode, thereby suppressing the in-band spur.

[0078] To achieve the lowest phase noise, the second loop filter 10201 is a passive low-pass filter, and the phase detector frequency is 100MHz. The final phase noise output of the local oscillator module is -86dBc / Hz@100Hz, -95dBc / Hz@1kHz, -100dBc / Hz@10kHz, and -106dBc / Hz@100kHz.

[0079] like Figure 3 As shown, in a preferred embodiment of the present invention, the switch filter bank 10104 includes: a first switch 101041, a second switch 101044, a first bandpass filter 101042, and a second bandpass filter 101043.

[0080] The DDS signal is divided into two segments by the first switch 10101 and then input to the first bandpass filter 101042 and the second bandpass filter 101043 for filtering. The filtered DDS signal is then output in segments by the second switch 101044. The first bandpass filter 101042 and the second bandpass filter 101043 are both ceramic bandpass filters with LTCC structure.

[0081] In the above scheme, in addition to harmonic components, the DDS output signal also has some relatively large spurious signals in its frequency band, which can be filtered out by segmentation. A switch is used to divide the DDS output signal into two segments, which are then passed through bandpass filter 1 and bandpass filter 2 respectively, and then through a single-stage switch to achieve segmented output. The switching on and off is controlled by the control unit, and the filters are LTCC ceramic bandpass filters.

[0082] like Figure 1 As shown, in a preferred embodiment of the present invention, the mixing module 103 includes: a first mixer 10301 for mixing the DDS signal with the local oscillator signal to obtain a mixed signal; and a second filter 10302 for filtering the mixed signal to obtain a mixed output signal; wherein the second filter is a cavity filter.

[0083] In the above scheme, the mixer mixes the signal generated by the DDS module with the local oscillator signal to produce the output signal required by the transmitting unit, which is then input into the second filter. The second filter is a cavity filter that filters the output signal of the mixer, primarily to suppress harmonic components generated by the local oscillator signal and reduce spurious signals.

[0084] like Figure 4 As shown, in a preferred embodiment of the present invention, the transmitting unit 2 includes: a third amplifier 201, an eighth frequency multiplier 202, a third filter 203, a fourth amplifier 204, a first attenuator 205, and a fifth amplifier 206 connected in sequence; wherein,

[0085] The X-band sweep source signal output by the frequency source unit 1 is amplified by the third amplifier 201 and the octupler 202, and then a W-band signal is obtained, and then the signal is filtered by the third filter 203 to suppress spurs, and then the signal is sequentially amplified by the fourth amplifier 204, the first attenuator 205 and the fifth amplifier 206, and then the signal is transmitted to the air through an antenna; and the third filter is a microstrip hairpin filter.

[0086] In the above scheme, the unit mainly realizes the output of the W-band by frequency multiplication of the lower frequency radio frequency input, and the signal output by the frequency source unit is octupled to the W-band after power amplification, filtered by the third filter to suppress spurs, and then transmitted to the air through an antenna after power amplification.

[0087] The third filter 203 is a microstrip hairpin filter, and the passband thereof mainly depends on the output signal of the W-band, and is mainly used to suppress the harmonics of the signal output by the frequency source unit, especially the 7th and 9th harmonics.

[0088] As shown in Figure 5 In a preferred embodiment of the present application, the receiving down-conversion unit 3 comprises a high-frequency signal receiving module, an input radio frequency signal module and a down-conversion module; wherein,

[0089] The high-frequency signal receiving module is connected to the output port of the transmitting unit through an antenna and a circulator to receive the W-band signal output by the transmitting unit, the input radio frequency signal module is connected to the external radio frequency signal input, and the down-conversion module down-converts the output signal of the high-frequency signal receiving module and the output signal of the input radio frequency signal module to an intermediate frequency signal; the high-frequency signal receiving module comprises a sixth amplifier connected to the antenna and the circulator.

[0090] The input radio frequency signal module comprises a seventh amplifier 309, a second attenuator 308 and an eighth amplifier 307 connected in sequence; the down-conversion module comprises a second mixer 302, a ninth amplifier 303, a digital control attenuator 304, a tenth amplifier 305 and a fourth filter 306 connected in sequence, and the second mixer is also electrically connected to the sixth amplifier 301 and the eighth amplifier 307; the high-frequency signal receiving module shares the antenna with the transmitting unit; and the fourth filter is an LC low-pass filter.

[0091] In the above scheme, the receiving down-conversion unit shares an antenna with the transmitting unit, so a circulator is added before the antenna to realize antenna sharing, and the fourth filter is a ceramic low-pass filter with an LTCC structure, which meets the miniaturization requirement while suppressing spurs.

[0092] In a preferred embodiment of the present invention, the W-band transceiver component further includes: a control unit 4 connected to both the frequency source unit and the receiving down-conversion unit; wherein,

[0093] The control unit is used to convert the commands issued by the host computer into communication commands and send them to the microcontroller. The microcontroller sends timing control signals to the SLK and SDI pins of each unit to control the output of the first and second frequency synthesizers at the corresponding frequency points, control the on / off time of the switching filter bank, receive the attenuation of the downconverter unit, and feed back the operating status of each unit to the host computer.

[0094] like Figure 6 As shown, in the above scheme, the control module 4 communicates with the serial port controller 401 to perform frequency control, switch on / off, attenuation control and status feedback. The lower-level machine decodes the instructions of the upper-level machine and then controls the logic controller 402 to output the corresponding timing sequence to realize the frequency control, switch on / off and attenuation control of the product and provide feedback information.

[0095] In summary, the W-band transceiver component provided by this invention can achieve high frequency, fast and stable data transmission rate, and long detection distance when in use, while also having a highly efficient power amplification function to ensure the range and coverage area of ​​the transmitted signal.

[0096] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0097] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0098] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A W-band transceiver assembly, comprising: The W-band transceiving assembly comprises a frequency source unit, a transmitting unit and a receiving down-conversion unit; wherein, the frequency source unit is configured to receive a reference signal and output an X-band sweep source signal to the transmitting unit, the transmitting unit is configured to convert the input X-band sweep source signal into a W-band signal and output the W-band signal to the receiving down-conversion unit, and the receiving down-conversion unit is configured to convert the received W-band signal into an intermediate frequency signal and output the intermediate frequency signal; the frequency source unit comprises a DDS module, a local oscillator module and a mixing module; the reference signal is sequentially output to the DDS module and the local oscillator module after passing through a first amplifier, a first filter and a power divider; the DDS module is configured to convert the reference signal into a DDS signal and output the DDS signal, and the local oscillator module is configured to convert the reference signal into a local oscillator signal and output the local oscillator signal; the mixing module is configured to receive the DDS signal and the local oscillator signal, mix the DDS signal and the local oscillator signal, and filter the mixed signal to obtain a mixing output signal required by the transmitting unit; the DDS module comprises a first frequency synthesizer, a first loop filter, a DDS and a switch filter bank; the first frequency synthesizer matches the point frequency source signal generated by the first loop filter to input into the DDS as a clock signal, converts the clock signal into a fast frequency hopping signal as a DDS signal output, and the switch filter bank is configured to divide the DDS signal into at least two segments by switching, filter each segment of the fast frequency hopping signal, and output the filtered fast frequency hopping signal; the first loop filter adopts a passive LC low-pass filter; the switch filter bank comprises a first switch, a second switch, a first band-pass filter and a second band-pass filter; the DDS signal is divided into two segments by the first switch and input into the first band-pass filter and the second band-pass filter for filtering, and the filtered DDS signal is output by the second switch; wherein, the first band-pass filter and the second band-pass filter both adopt a ceramic band-pass filter with an LTCC structure; the local oscillator module comprises a second frequency synthesizer, a second loop filter and a second amplifier; the second frequency synthesizer matches the reference signal generated by the second loop filter to convert the reference signal into an X-band signal as a local oscillator signal output, and the local oscillator signal is amplified by the second amplifier and input into the mixing module; the second loop filter adopts a passive LC low-pass filter; the mixing module comprises: a first mixer configured to mix the DDS signal and the local oscillator signal to obtain a mixed signal; and a second filter configured to filter the mixed signal to obtain a mixing output signal; wherein, the second filter adopts a cavity filter.

2. The W-band transceiver assembly of claim 1, wherein, the transmitting unit comprises a third amplifier, an eight times frequency multiplier, a third filter, a first attenuator and a fifth amplifier connected in sequence; wherein, the X-band sweep source signal output by the frequency source unit is amplified by the third amplifier and the eight times frequency multiplier to obtain a W-band signal, the W-band signal is filtered by the third filter to suppress spurious, and the filtered signal is power amplified by the first attenuator and the fifth amplifier in sequence, and then transmitted to the air through an antenna. The third filter is a microstrip hairpin filter.

3. The W-band transceiver assembly of claim 1, wherein, The receiving and down-converting unit comprises a high-frequency signal receiving module, an input radio frequency signal module and a down-converting module. The high-frequency signal receiving module is connected with the output port of the transmitting unit through an antenna and a circulator, so as to receive the W-band signal output by the transmitting unit.

4. The W-band transceiving assembly according to claim 3, wherein the high-frequency signal receiving module comprises a sixth amplifier connected with the circulator. The input radio frequency signal module comprises a seventh amplifier, a second attenuator and an eighth amplifier connected in sequence. The down-converting module comprises a second mixer, a ninth amplifier, a digital control attenuator, a tenth amplifier and a fourth filter connected in sequence. The high-frequency signal receiving module shares the antenna with the transmitting unit. The fourth filter is an LC low-pass filter. The W-band transceiving assembly further comprises a control unit connected with the frequency source unit and the receiving and down-converting unit respectively.

5. The W-band transceiver assembly of claim 1, wherein, The control unit is used to convert the command from the upper computer into a communication command for the single-chip microcomputer, and the single-chip microcomputer sends a time sequence control signal to the SLK and SDI pins of each unit, so as to control the first frequency synthesizer and the second frequency synthesizer to output corresponding frequency points, control the on-off time of the switch filter group and the attenuation of the receiving and down-converting unit, and feed back the running state of each unit to the upper computer. ​

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