Millimeter wave transceiver

Abstract

The utility model discloses a millimeter wave transceiver, comprising a first cavity, a second cavity and a third cavity which are vertically distributed; a frequency multiplication component is arranged in the first cavity, a frequency mixing component is arranged in the second cavity, and a low noise amplifier component is arranged in the third cavity; the input end of the frequency multiplication component is connected to a local oscillator, and the output end of the frequency multiplication component is connected to the frequency mixing component; when the millimeter wave transceiver is used to transmit a signal, the input end of the frequency mixing component is connected to the signal transmitting end, and the frequency mixing component can mix the intermediate frequency signal of the signal transmitting end with the local oscillator signal to generate a radio frequency signal; the output end of the frequency mixing component is connected to the low noise amplifier component; when the millimeter wave transceiver is used to receive a signal, the input end of the low noise amplifier component is connected to the signal receiving end, and the output end is connected to the frequency mixing component. In the utility model, three functional components are respectively arranged in three independent cavities which are vertically distributed, which effectively utilizes the vertical space and reduces the overall volume.

Description

Technical Field

[0001] The utility model relates to the technical field of communication and radar, in particular to a millimeter wave transceiver. Background Art

[0002] The transmitting and receiving components, commonly referred to as T / R components in the industry, are a critical part of modern radar, communication and electronic countermeasure systems. The transmitting and receiving components are not only responsible for transmitting signals, but also for receiving signals.

[0003] Specifically, the main function of the transmitting component is to realize the up-conversion of the intermediate frequency signal. In daily communication and radar applications, the intermediate frequency signal often needs to undergo a series of processing and modulation, and then be moved to the radio frequency band through the transmitting component to facilitate propagation in space. The receiving component is responsible for processing the radio frequency signal received in space and moving it to the intermediate frequency signal for subsequent signal processing and data analysis.

[0004] In modern radar and communication systems, the portability and performance requirements of the equipment are extremely high, and the performance of the T / R component, as a core component, directly affects the performance of the entire system. Therefore, the design of the T / R component often requires it to be small in size, highly integrated, and able to flexibly switch between transmit and receive modes.

[0005] However, when it comes to the W-band (75GHz~110GHz), the realization of T / R components becomes particularly difficult. This is mainly because the operating frequency of the W-band is very high, which places extremely high demands on the design, processing, technology and testing of components. At the same time, due to the lack of integrated T / R chips on the market, T / R components need to be packaged using multiple chips during the manufacturing process, which undoubtedly increases the difficulty and cost of manufacturing.

[0006] In the W band, the transmission line mostly adopts a waveguide structure. A certain amount of space needs to be left where the waveguide flange contacts to screw in order to ensure the stability of the connection. However, this also leads to the volume of the T / R component becoming relatively large when multiple chips are integrated, which is not conducive to the portability and integration of the device.

[0007] In addition, if the traditional microstrip line integration method is used, although the volume can be reduced, self-excitation is prone to occur, and problems such as poor testability and high insertion loss will also appear. These problems will seriously affect the performance and stability of the T / R components, and then affect the performance of the entire radar or communication system. Utility Model Content

[0008] The utility model provides a millimeter wave transceiver to solve the problems of large structure volume and poor testability of traditional T / R components.

[0009] The present application provides a millimeter wave transceiver, which is connected to a signal transmitting end, a signal receiving end and a local oscillator respectively, and comprises a first cavity, a second cavity and a third cavity which are vertically distributed; a frequency multiplication component is arranged in the first cavity, a frequency mixing component is arranged in the second cavity, and a low noise amplifier component is arranged in the third cavity;

[0010] The input end of the frequency multiplication component is connected to the local oscillator, and the output end of the frequency multiplication component is connected to the frequency mixing component. The frequency multiplication component is used to perform frequency multiplication processing on the local oscillator signal and transmit the multiplied local oscillator signal to the frequency mixing component;

[0011] When the millimeter wave transceiver is used to transmit a signal, the input end of the mixing component is connected to the signal transmitting end, and the mixing component can mix the intermediate frequency signal of the signal transmitting end with the local oscillator signal to generate a radio frequency signal; the output end of the mixing component is connected to the low noise amplifier component, and the low noise amplifier component is used to transmit the radio frequency signal;

[0012] When the millimeter wave transceiver is used to receive a signal, the input end of the low noise amplifier component is connected to the signal receiving end, and the output end is connected to the mixing component. The low noise amplifier component transmits the received RF signal to the mixing component, and the mixing component can mix the RF signal with the local oscillator signal to generate an intermediate frequency signal and output it.

[0013] According to the above technical means, in the utility model, the frequency doubling component, the mixing component and the low noise amplifier component are respectively arranged in three independent cavities distributed vertically, which not only ensures that each component has sufficient space for heat dissipation and electromagnetic shielding, but also effectively utilizes the vertical space and reduces the overall volume.

[0014] At the same time, since the frequency multiplication component, mixing component and low noise amplifier component are independent of each other, each component has a clear functional definition and input and output interface, the frequency multiplication component, mixing component and low noise amplifier component can be tested as an independent unit without considering the influence of other components, which significantly improves the test efficiency, accuracy and flexibility.

[0015] Furthermore, the frequency multiplication component includes a power divider, a first frequency multiplier and a second frequency multiplier, the input end of the power divider is connected to the local oscillator to divide the local oscillator signal into two signals; the output ends of the power divider are respectively connected to the input ends of the first frequency multiplier and the second frequency multiplier, and the output ends of the first frequency multiplier and the second frequency multiplier are connected to the mixing component.

[0016] According to the above technical means, the power divider in the utility model divides the local oscillator signal into two signals, which are respectively used for mixing with the receiving signal and the transmitting signal. The two signals are respectively multiplied by the first multiplier and the second multiplier to generate high-frequency signals.

[0017] Furthermore, the frequency multiplication component further includes a first filter and a second filter, wherein the first filter is arranged on a connection link between the first frequency multiplier and the frequency mixing component, and the second filter is arranged on a connection link between the second frequency multiplier and the frequency mixing component.

[0018] According to the above technical means, the first filter and the second filter are used to reduce noise and other interference components, thereby improving the purity and quality of the local oscillator signal.

[0019] Further, the mixing component includes a first mixer and a second mixer;

[0020] When the millimeter wave transceiver is used to transmit a signal, the first mixer input end is connected to the first frequency multiplier output end and the signal transmitting end respectively to generate an upper sideband signal by mixing, and the first mixer output end is connected to the low noise amplifier component;

[0021] When the millimeter wave transceiver is used to receive signals, the second mixer input end is connected to the second frequency multiplier output end and the low noise amplifier component respectively to mix and generate an intermediate frequency signal and output it.

[0022] Furthermore, the frequency mixing component further includes a third filter, and the third filter is arranged on a connection link between an output end of the first frequency mixer and the low noise amplifier component.

[0023] According to the above technical means, the third filter is used to filter other signals of the upper sideband signal except the required radio frequency signal.

[0024] Furthermore, the mixing component also includes an intermediate frequency low noise amplifier, and the intermediate frequency low noise amplifier is connected to the output end of the second mixer.

[0025] According to the above technical means, the intermediate frequency low noise amplifier amplifies the intermediate frequency signal generated by the mixer and reduces the noise in the intermediate frequency signal.

[0026] Furthermore, the low noise amplifier component includes a first low noise amplifier, and the first low noise amplifier is connected to the output end of the first mixer.

[0027] According to the above technical means, the first low noise amplifier amplifies the radio frequency signal generated by the first mixer and reduces the noise in the radio frequency signal.

[0028] Furthermore, the low noise amplifier component also includes a second low noise amplifier, the second low noise amplifier input end is connected to the signal receiving end, and the second low noise amplifier output end is connected to the second mixer input end.

[0029] According to the above technical means, the second low noise amplifier amplifies the RF signal fed from the signal receiving end, reduces the noise in the RF signal, and inputs the processed receiving end RF signal into the second mixer to generate an intermediate frequency signal.

[0030] Furthermore, the first cavity further comprises a first upper cavity and a first lower cavity spliced ​​to each other, and the frequency doubling component is arranged between the first upper cavity and the first lower cavity;

[0031] The second cavity further comprises a second upper cavity and a second lower cavity spliced ​​to each other, and the mixing component is arranged between the second upper cavity and the second lower cavity;

[0032] The third cavity further includes a third upper cavity and a third lower cavity which are spliced ​​to each other, and the low noise amplifier component is arranged between the third upper cavity and the third lower cavity.

[0033] According to the above-mentioned technical means, each cavity provides physical support for the various functional components therein to ensure that they can work stably; and by distributing different functional components in different cavity layers and adopting waveguide vertical interconnection, the miniaturization and integration of millimeter wave transceiver devices can be achieved.

[0034] Furthermore, it also includes a waveguide window, which is distributed perpendicular to the third cavity.

[0035] According to the above technical means, the radio frequency signal at the receiving end can be fed to the low noise amplifier component through the waveguide window, effectively preventing the entry of external clutter and interference signals, and improving the purity and reliability of the signal.

[0036] Beneficial effects achieved by the utility model:

[0037] In the utility model, the frequency multiplication component, the frequency mixing component and the low noise amplifier component are respectively arranged in three independent cavities distributed vertically, which not only ensures that each component has enough space for heat dissipation and electromagnetic shielding, but also effectively utilizes the vertical space and reduces the overall volume.

[0038] At the same time, since the frequency multiplication component, mixing component and low noise amplifier component are independent of each other, each component has a clear functional definition and input and output interface, the frequency multiplication component, mixing component and low noise amplifier component can be tested as an independent unit without considering the influence of other components, which significantly improves the test efficiency, accuracy and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall explosion structure of the utility model;

[0040] Figure 2 This is a schematic diagram of the structure of the frequency doubling component of the utility model;

[0041] Figure 3 This is a schematic diagram of the structure of the frequency mixing component of the utility model;

[0042] Figure 4 It is a schematic diagram of the structure of the low noise amplifier component of the utility model.

[0043] Reference numerals:

[0044] 11-frequency multiplication component, 111-power divider, 112-first frequency multiplier, 113-second frequency multiplier, 114-first filter, 115-second filter, 116-first amplifier, 12-first upper cavity, 13-first lower cavity, 14-first SMP connector, 15-first waveguide, 16-second waveguide;

[0045] 21-mixing component, 211-first mixer, 212-second mixer, 213-third filter, 214-intermediate frequency low noise amplifier, 22-second upper cavity, 23-second lower cavity, 24-second SMP connector, 25-third waveguide, 26-fourth waveguide, 27-third SMP connector;

[0046] 31- low noise amplifier component, 311- first low noise amplifier, 312- second low noise amplifier, 32- third upper cavity, 33- third lower cavity, 34- fifth waveguide, 35- second amplifier;

[0047] 4- waveguide window;

[0048] 5- first PCB board;

[0049] 6- Second PCB board.

[0050] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0051] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0053] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0054] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0055] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0056] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0057] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.

[0058] like Figure 1-Figure 4As shown, a millimeter wave transceiver is connected to a signal transmitting end, a signal receiving end and a local oscillator respectively, and the millimeter wave transceiver comprises a first cavity, a second cavity and a third cavity which are vertically distributed; a frequency multiplication component 11 is arranged in the first cavity, a frequency mixing component 21 is arranged in the second cavity, and a low noise amplifier component 31 is arranged in the third cavity;

[0059] The input end of the frequency multiplication component 11 is connected to the local oscillator, and the output end of the frequency multiplication component 11 is connected to the frequency mixing component 21. The frequency multiplication component 11 is used to perform frequency multiplication processing on the local oscillator signal and transmit the frequency multiplied local oscillator signal to the frequency mixing component 21;

[0060] When the millimeter wave transceiver is used to transmit a signal, the input end of the mixing component 21 is connected to the signal transmitting end, and the mixing component 21 can mix the intermediate frequency signal of the signal transmitting end with the local oscillator signal to generate a radio frequency signal; the output end of the mixing component 21 is connected to the low noise amplifier component 31, and the low noise amplifier component 31 is used to transmit the radio frequency signal;

[0061] When the millimeter wave transceiver is used to receive signals, the input end of the low noise amplifier component 31 is connected to the signal receiving end, and the output end is connected to the mixing component 21. The low noise amplifier component 31 transmits the received RF signal to the mixing component 21. The mixing component 21 can mix the RF signal with the local oscillator signal to generate an intermediate frequency signal and output it.

[0062] According to the above technical means, in this embodiment, the frequency doubling component 11, the mixing component 21 and the low noise amplifier component 31 are respectively arranged in three independent cavities distributed vertically, which not only ensures that each component has sufficient space for heat dissipation and electromagnetic shielding, but also effectively utilizes the vertical space and reduces the overall volume.

[0063] At the same time, since the frequency doubling component 11, the frequency mixing component 21 and the low noise amplifier component 31 are independent of each other, each component has a clear functional definition and input and output interface, the frequency doubling component 11, the frequency mixing component 21 and the low noise amplifier component 31 can be tested as an independent unit without considering the influence of other components, which significantly improves the test efficiency, accuracy and flexibility.

[0064] Furthermore, the frequency multiplication component 11 includes a power divider 111, a first frequency multiplier 112 and a second frequency multiplier 113. The input end of the power divider 111 is connected to the local oscillator to divide the local oscillator signal into two signals; the output ends of the power divider 111 are respectively connected to the input ends of the first frequency multiplier 112 and the second frequency multiplier 113, and the output ends of the first frequency multiplier 112 and the second frequency multiplier 113 are connected to the mixing component 21.

[0065] In this embodiment, the power divider 111 divides the local oscillator signal into two signals, which are respectively used for mixing with the receiving signal and the transmitting signal. The two signals are respectively multiplied by the first frequency multiplier 112 and the second frequency multiplier 113 to generate high-frequency signals.

[0066] In this embodiment, the frequency multiplication component 11 further includes a first amplifier 116. The first amplifier 116 is disposed on the connection link between the power divider 111 and the local oscillator, and is used to amplify the local oscillator signal.

[0067] Furthermore, the frequency multiplication component 11 further includes a first filter 114 and a second filter 115 . The first filter 114 is arranged on the connection link between the first frequency multiplier 112 and the frequency mixing component 21 , and the second filter 115 is arranged on the connection link between the second frequency multiplier 113 and the frequency mixing component 21 .

[0068] According to the above technical means, the first filter 114 and the second filter 115 are used to reduce noise and other interference components, thereby improving the purity and quality of the local oscillator signal.

[0069] Further, the mixing component 21 includes a first mixer 211 and a second mixer 212;

[0070] When the millimeter wave transceiver is used to transmit a signal, the input end of the first mixer 211 is connected to the output end of the first frequency multiplier 112 and the signal transmitting end respectively to generate an upper sideband signal by mixing, and the output end of the first mixer 211 is connected to the low noise amplifier component 31;

[0071] When the millimeter wave transceiver is used to receive signals, the input end of the second mixer 212 is connected to the output end of the second frequency multiplier 113 and the low noise amplifier component 31 respectively, so as to mix and generate an intermediate frequency signal and output it.

[0072] Furthermore, the frequency mixing component 21 further includes a third filter 213 , which is arranged on a connection link between an output end of the first frequency mixer 211 and the low noise amplifier component 31 .

[0073] According to the above technical means, the third filter 213 is used to filter other signals of the upper sideband signal except the required radio frequency signal.

[0074] Furthermore, the mixing component 21 further includes an intermediate frequency low noise amplifier 214 , and the intermediate frequency low noise amplifier 214 is connected to the output end of the second mixer 212 .

[0075] According to the above technical means, the intermediate frequency low noise amplifier 214 amplifies the intermediate frequency signal generated by the mixer and reduces the noise in the intermediate frequency signal.

[0076] Furthermore, the low noise amplifier component 31 includes a first low noise amplifier 311 , and the first low noise amplifier 311 is connected to the output end of the first mixer 211 .

[0077] According to the above technical means, the first low noise amplifier 311 amplifies the radio frequency signal generated by the first mixer 211 and reduces the noise in the radio frequency signal.

[0078] Furthermore, the low noise amplifier component 31 also includes a second low noise amplifier 312 , the input end of the second low noise amplifier 312 is connected to the signal receiving end, and the output end of the second low noise amplifier 312 is connected to the input end of the second mixer 212 .

[0079] According to the above technical means, the second low noise amplifier 312 amplifies the RF signal fed from the signal receiving end, reduces the noise in the RF signal, and inputs the processed receiving end RF signal into the second mixer 212 to generate an intermediate frequency signal.

[0080] Furthermore, the first cavity further includes a first upper cavity 12 and a first lower cavity 13 which are spliced ​​to each other, and the frequency doubling component 11 is arranged between the first upper cavity 12 and the first lower cavity 13;

[0081] The second cavity further includes a second upper cavity 22 and a second lower cavity 23 which are spliced ​​to each other, and the mixing component 21 is arranged between the second upper cavity 22 and the second lower cavity 23;

[0082] The third cavity further includes a third upper cavity 32 and a third lower cavity 33 which are spliced ​​to each other, and the low noise amplifier component 31 is arranged between the third upper cavity 32 and the third lower cavity 33 .

[0083] According to the above-mentioned technical means, each cavity provides physical support for the various functional components therein to ensure that they can work stably; and by distributing different functional components in different cavity layers and adopting waveguide vertical interconnection, the miniaturization and integration of millimeter wave transceiver devices can be achieved.

[0084] Furthermore, it also includes a waveguide window 4, which is distributed perpendicular to the third cavity.

[0085] According to the above technical means, the radio frequency signal at the receiving end can be fed to the low noise amplifier component 31 through the waveguide window 4, effectively preventing the entry of external clutter and interference signals, and improving the purity and reliability of the signal.

[0086] This embodiment also includes a first PCB board 5 and a second PCB board 6. The first PCB board adopts a modulation circuit to realize the switching between signal transmission and signal reception. The second PCB board is a local oscillator chain. In order to realize fast switching, the second PCB board is always in a working state during the switching between transmission and reception. Therefore, only LDO and other circuits on the second PCB board realize voltage conversion and filtering functions.

[0087] In summary, in the specific signal transmission process, the 10.5GHz local oscillator signal enters the first cavity through the first SMP connector 14, and is converted into upper and lower signals through the first amplifier 116 and the power divider 111. The upper signal enters the first frequency multiplier 112 to multiply the input signal by 8 to 84GHz, and then passes through the first filter 114 to filter out the out-of-band signal and the remaining signals except the 8-fold frequency, and then vertically transitions to the second cavity through the first waveguide 15;

[0088] The dropped signal enters the second frequency multiplier 113 to multiply the input signal by 8 to 84 GHz, then passes through the second filter 115 to filter out out-of-band signals and other signals except the 8-fold frequency multiplier, and vertically transitions to the second cavity through the second waveguide 16.

[0089] The signal passing through the first waveguide 15 enters the first mixer 211 as a local oscillator. The intermediate frequency signal of the signal transmitting end is fed into the first mixer 211 through the second SMP connector 24. After being mixed by the first mixer 211, an upper sideband signal is generated and output by the third waveguide 25. After being filtered out by the third filter 213 to remove unnecessary signals such as the local oscillator signal and the lower sideband, the signal passes through the fourth waveguide 26 and passes to the third cavity.

[0090] For the received RF signal, the signal from the second waveguide 16 enters the second mixer 212 as a local oscillator. The RF signal from the third cavity is also fed into the second mixer 212 for mixing to generate an intermediate frequency signal, which is amplified by the intermediate frequency low noise amplifier 214 and outputted from the third SMP connector 27 to the receiving end.

[0091] The signal generated by the transmitting frequency enters the first low noise amplifier 311 through the fourth waveguide 26 for amplification and is output through the fifth waveguide 34, and then enters the second amplifier 35 for further amplification and is transmitted to the output port of the third cavity for output, completing the mixing, filtering, amplification, etc. of the transmitting end. As for the signal receiving end, the receiving signal through the waveguide window 7 is fed to the second low noise amplifier 312 for amplification and then output to the second mixer 212 for down-conversion, completing the receiving work.

[0092] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A millimeter wave transceiver, wherein the millimeter wave transceiver is connected to a signal transmitting end, a signal receiving end and a local oscillator respectively, and characterized in that: The millimeter wave transceiver comprises a first cavity, a second cavity and a third cavity which are vertically distributed; a frequency multiplication component (11) is arranged in the first cavity, a frequency mixing component (21) is arranged in the second cavity, and a low noise amplifier component (31) is arranged in the third cavity; The input end of the frequency multiplication component (11) is connected to the local oscillator, and the output end of the frequency multiplication component (11) is connected to the frequency mixing component (21). The frequency multiplication component (11) is used to perform frequency multiplication processing on the local oscillator signal and transmit the frequency multiplied local oscillator signal to the frequency mixing component (21); When the millimeter wave transceiver is used to transmit a signal, the input end of the mixing component (21) is connected to the signal transmitting end, and the mixing component (21) can mix the intermediate frequency signal of the signal transmitting end with the local oscillator signal to generate a radio frequency signal; the output end of the mixing component (21) is connected to the low noise amplifier component (31), and the low noise amplifier component (31) is used to transmit the radio frequency signal; When the millimeter wave transceiver is used to receive a signal, the input end of the low noise amplifier component (31) is connected to the signal receiving end, and the output end is connected to the mixing component (21). The low noise amplifier component (31) transmits the received radio frequency signal to the mixing component (21), and the mixing component (21) can mix the radio frequency signal with the local oscillator signal to generate an intermediate frequency signal and output it.

2. A millimeter wave transceiver according to claim 1, characterized in that: The frequency multiplication component (11) comprises a power divider (111), a first frequency multiplier (112) and a second frequency multiplier (113); an input end of the power divider (111) is connected to the local oscillator to divide the local oscillator signal into two signals; each output end of the power divider (111) is connected to the input end of the first frequency multiplier (112) and the input end of the second frequency multiplier (113); and the output ends of the first frequency multiplier (112) and the second frequency multiplier (113) are connected to the frequency mixing component (21).

3. A millimeter wave transceiver according to claim 2, characterized in that: The frequency multiplication component (11) further comprises a first filter (114) and a second filter (115), wherein the first filter (114) is arranged on a connection link between the first frequency multiplier (112) and the frequency mixing component (21), and the second filter (115) is arranged on a connection link between the second frequency multiplier (113) and the frequency mixing component (21).

4. A millimeter wave transceiver according to claim 2 or 3, characterized in that: The mixing component (21) comprises a first mixer (211) and a second mixer (212); When the millimeter wave transceiver is used to transmit a signal, the input end of the first mixer (211) is connected to the output end of the first frequency multiplier (112) and the signal transmitting end respectively to generate an upper sideband signal by mixing, and the output end of the first mixer (211) is connected to the low noise amplifier component (31); When the millimeter wave transceiver is used to receive a signal, the input end of the second mixer (212) is connected to the output end of the second frequency multiplier (113) and the low noise amplifier component (31) respectively, so as to generate an intermediate frequency signal through mixing and output it.

5. A millimeter wave transceiver according to claim 4, characterized in that: The frequency mixing component (21) further comprises a third filter (213), wherein the third filter (213) is arranged on a connection link between an output end of the first frequency mixer (211) and the low noise amplifier component (31).

6. A millimeter wave transceiver according to claim 4, characterized in that: The mixing component (21) further comprises an intermediate frequency low noise amplifier (214), wherein the intermediate frequency low noise amplifier (214) is connected to an output end of the second mixer (212).

7. The millimeter wave transceiver according to claim 4, characterized in that: The low noise amplifier component (31) comprises a first low noise amplifier (311), and the first low noise amplifier (311) is connected to an output end of the first mixer (211).

8. The millimeter wave transceiver according to claim 7, characterized in that: The low noise amplifier component (31) further comprises a second low noise amplifier (312), wherein an input end of the second low noise amplifier (312) is connected to the signal receiving end, and an output end of the second low noise amplifier (312) is connected to an input end of the second mixer (212).

9. The millimeter wave transceiver according to claim 1, characterized in that: The first cavity further comprises a first upper cavity (12) and a first lower cavity (13) which are spliced ​​to each other, and the frequency doubling component (11) is arranged between the first upper cavity (12) and the first lower cavity (13); The second cavity further comprises a second upper cavity (22) and a second lower cavity (23) which are spliced ​​to each other, and the mixing component (21) is arranged between the second upper cavity (22) and the second lower cavity (23); The third cavity further comprises a third upper cavity (32) and a third lower cavity (33) which are spliced ​​to each other, and the low noise amplifier component (31) is arranged between the third upper cavity (32) and the third lower cavity (33).

10. The millimeter wave transceiver according to claim 1, characterized in that: It also comprises a waveguide window (4), wherein the waveguide window (4) is distributed perpendicular to the third cavity.

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