An assembled orthogonal mode converter-filter assembly and electronic device

Abstract

The application discloses an assembled orthogonal mode converter-filter assembly and electronic equipment. The assembly comprises an orthogonal mode converter, a waveguide filter and a turning waveguide. A common port of the orthogonal mode converter is used for receiving a first electromagnetic wave transmitted by a satellite and transmitting a second electromagnetic wave input from a transmitting port to the satellite. A rectangular coupling port provided on a contact surface of the orthogonal mode converter and the waveguide filter is used for coupling a y-polarized signal in the first electromagnetic wave to the waveguide filter. The y-polarized signal in the first electromagnetic wave is transmitted to a waveguide output port of the turning waveguide after passing through the waveguide filter. A first impedance transformation structure provided between the common port and the transmitting port is used for transmitting an x-polarized signal in the second electromagnetic wave to the common port. The rectangular coupling port is also used for preventing the x-polarized signal in the second electromagnetic wave from being transmitted to the waveguide filter. The first impedance transformation structure is also used for preventing the y-polarized signal in the first electromagnetic wave from being transmitted to the transmitting port.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of satellite communication, in particular to an assembled orthomode transducer-filter assembly and electronic equipment. BACKGROUND

[0002] An orthomode transducer (OMT), also known as a dual-mode transducer or orthomode transducer, is a device for realizing the duplex transmission (i.e. separation and synthesis) of orthogonal polarized signals in an antenna feed system, and has been widely used. The orthomode transducer can identify the independent signals of two orthogonal main modes on a common port, and supply them to the base mode of a single signal port, so that all ports are matched, and there is high polarization discrimination between the two signals. Generally, the orthomode transducer only shows three physical ports, but actually it is four ports in electricity. The common port is connected with a horn antenna interface of a circular waveguide or a square waveguide, which provides two electrical ports matched to two independent orthogonal modes. The remaining two single signal ports are generally composed of standard waveguide ports or coaxial ports, and only transmit the respective base modes.

[0003] In a satellite communication, microwave transmission and other communication systems, in order to separate two signals with different frequencies and different polarizations, an orthomode transducer-filter assembly is usually needed to realize the separation. However, the conventional orthomode transducer and filter assembly are cascaded by independent connecting waveguides, so that the size of the whole assembly is large and the processing cost is high. SUMMARY

[0004] The embodiment of the present application aims to provide an assembled orthomode transducer-filter assembly and electronic equipment, which can reduce the size and processing cost of the whole assembly.

[0005] To solve the above technical problems, the embodiment of the present application provides an assembled orthogonal mode converter-filter assembly, which comprises an orthogonal mode converter, a waveguide filter and a turning waveguide, the orthogonal mode converter and the turning waveguide are respectively arranged on two sides of the waveguide filter; the upper and lower ends of the orthogonal mode converter are respectively provided with a common port and a transmitting port, the common port and the transmitting port are through from top to bottom, the common port is used for receiving a first electromagnetic wave transmitted by a satellite, and a second electromagnetic wave input from the transmitting port is transmitted to the satellite, the first electromagnetic wave and the second electromagnetic wave are both orthogonal polarization signals containing x polarization signals and y polarization signals; a rectangular coupling port is arranged on the contact surface of the orthogonal mode converter and the waveguide filter, the rectangular coupling port is used for coupling the y polarization signal in the first electromagnetic wave to the waveguide filter after the common port receives the first electromagnetic wave, so that the y polarization signal in the first electromagnetic wave is transmitted to a waveguide output port of the turning waveguide through the waveguide filter, and the receiving of the first electromagnetic wave is completed; a first impedance transformation structure is arranged between the common port and the transmitting port, the first impedance transformation structure is used for transmitting the x polarization signal in the second electromagnetic wave to the common port after the transmitting port receives the second electromagnetic wave, and the transmitting of the second electromagnetic wave is completed; wherein the rectangular coupling port is also used for preventing the x polarization signal in the second electromagnetic wave from being transmitted to the waveguide filter, and the first impedance transformation structure is also used for preventing the y polarization signal in the first electromagnetic wave from being transmitted to the transmitting port.

[0006] The embodiment of the present application also provides an electronic device comprising the above-mentioned assembled orthogonal mode converter-filter assembly.

[0007] The embodiment of the application provides an assembled orthogonal mode converter-filter assembly, wherein a rectangular coupling port is arranged on the contact surface of the orthogonal mode converter and the waveguide filter, after the common port of the orthogonal mode converter receives the first electromagnetic wave transmitted by the satellite, the rectangular coupling port can couple the y polarization signal in the first electromagnetic wave to the waveguide filter, so that the signal is transmitted to the waveguide output port of the turning waveguide through the waveguide filter, and the reception of the first electromagnetic wave is completed. The rectangular coupling port realizes the separation of the x polarization signal and the y polarization signal in the first electromagnetic wave, and simultaneously realizes the transmission of the y polarization signal in the first electromagnetic wave from the orthogonal mode converter to the waveguide filter, compared with the traditional independent structure cascade filter form, the scheme that the orthogonal mode converter and the waveguide filter are electromagnetically coupled through the rectangular coupling port to realize the reception of the first electromagnetic wave, the connecting waveguide for transmitting the y polarization signal in the first electromagnetic wave from the orthogonal mode converter to the waveguide filter is omitted, so that the size and the processing cost of the whole assembled orthogonal mode converter-filter assembly are reduced. Moreover, the rectangular coupling port is also used for preventing the x polarization signal in the second electromagnetic wave transmitted to the satellite from entering the waveguide filter, and the first impedance transformation structure is also used for preventing the y polarization signal in the first electromagnetic wave received from the satellite from being transmitted to the emission port, so that the situation that the received part of the first electromagnetic wave is output from the emission port and the first electromagnetic wave received from the satellite is lost is avoided, and the situation that part of the second electromagnetic wave is transmitted into the waveguide filter and the electromagnetic wave transmitted to the satellite is lost is avoided.

[0008] In some optional embodiments, a second impedance transformation structure is further arranged between the common port and the emission port, the first impedance transformation structure is connected with the emission port, and the second impedance transformation structure is connected with the common port; the second impedance transformation structure is used for performing impedance transformation processing on the second electromagnetic wave processed through the first impedance transformation structure, so as to reduce the reflection coefficient of the second electromagnetic wave processed through the first impedance transformation structure.

[0009] In some optional embodiments, a probe perpendicular to the y direction of the orthogonal mode converter is arranged between the first impedance transformation structure and the second impedance transformation structure, and the probe is used for resonating with the y polarization signal in the first electromagnetic wave after the common port receives the first electromagnetic wave, and coupling the y polarization signal in the first electromagnetic wave to the rectangular coupling port.

[0010] In some optional embodiments, the first impedance transformation structure is a stepped impedance transformation structure, and the size of the step gradually increases upwards along the emission port.

[0011] In some optional embodiments, the waveguide filter comprises a plurality of coupling membranes arranged along a horizontal direction of the waveguide filter, and the two outermost coupling membranes are connected to the two side walls of the waveguide filter respectively, so that a plurality of resonant cavities are formed in the waveguide filter, and the resonant cavities are used for filtering the y-polarized signal in the first electromagnetic wave.

[0012] In some optional embodiments, the distance between any two adjacent coupling membranes in the plurality of coupling membranes is half of the central frequency of the first electromagnetic wave.

[0013] In some optional embodiments, the number of the coupling membranes is 7.

[0014] In some optional embodiments, the turning waveguide is a stepped structure, and the size of the step gradually increases downward along the contact surface of the turning waveguide and the waveguide filter.

[0015] In some optional embodiments, the outer periphery of the common port and the transmitting port is provided with a flange matching the shape of the common port and the transmitting port respectively. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, and which do not limit the scope of embodiments.

[0017] Figure 1 is a structural schematic diagram of an assembled orthogonal mode converter-filter assembly according to an embodiment of the present application;

[0018] Figure 2 is a structural schematic diagram of an orthogonal mode converter according to an embodiment of the present application;

[0019] Figure 3 is a cross-sectional structural schematic diagram of an assembled orthogonal mode converter-filter assembly according to an embodiment of the present application;

[0020] Figure 4 is an appearance schematic diagram of an assembly according to an embodiment of the present application Figure 1 ;

[0021] Figure 5 is an appearance schematic diagram of an assembly according to an embodiment of the present application Figure 2 ;

[0022] Figure 6 is a return loss schematic diagram of an assembly according to an embodiment of the present application Figure 1 ;

[0023] Figure 7A return loss diagram is provided according to an embodiment of the present application. Figure 2 ;

[0024] Figure 8 This is an insertion loss parameter curve diagram provided according to an embodiment of the present application. Figure 1 ;

[0025] Figure 9 This is an insertion loss parameter curve diagram provided according to an embodiment of the present application. Figure 2 ;

[0026] Figure 10 This is a schematic diagram of port isolation provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, it will be understood by those skilled in the art that in each embodiment of the present application, many technical details are proposed to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation of the present application. The various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0028] An embodiment of the present application relates to an assembled orthogonal mode converter-filter component. The implementation details of the assembled orthogonal mode converter-filter component method of this embodiment are specifically described below. The following content is only the implementation details provided for the convenience of understanding and is not necessary for the implementation of this solution.

[0029] The specific structure of the assembled orthogonal mode converter-filter component of this embodiment can be as follows Figure 1 As shown, it includes: an orthogonal mode converter 1, a waveguide filter 2 and a turning waveguide 3, and the orthogonal mode converter 1 and the turning waveguide 3 are respectively arranged on both sides of the waveguide filter 2.

[0030] Specifically, the specific structure of the orthogonal mode converter 1 is as follows Figure 2 As shown, the upper and lower ends of the orthogonal mode converter 1 are respectively provided with a common port 11 and a transmitting port 12, the common port 11 and the transmitting port 12 are connected up and down, the common port 11 is a circular waveguide port, and the main mode of the electromagnetic wave transmitted is TE 11 Mode, the transmitting port 12 is a rectangular waveguide port, and the main mode of the electromagnetic wave transmitted is TE 10 mold.

[0031] The working mode of the orthogonal mode converter 1 is described below:

[0032] The electromagnetic wave receiving mode of the orthogonal mode transducer 1 is that the common port 11 of the orthogonal mode transducer 1 is used to receive the electromagnetic wave (i.e. the first electromagnetic wave) transmitted by the satellite, and the electromagnetic wave transmitted by the satellite is the orthogonal polarization signal containing the x polarization signal and the y polarization signal, and the orthogonal mode transducer 1 needs to separate the orthogonal polarization signal and transmit the y polarization signal in the orthogonal polarization signal to the waveguide filter 2 so that the waveguide filter 2 performs subsequent signal processing.

[0033] In order to realize the above-mentioned electromagnetic wave receiving of the orthogonal mode transducer 1, the contact surface of the orthogonal mode transducer 1 in the embodiment and the waveguide filter 2 is provided with a rectangular coupling port 13. After the first electromagnetic wave transmitted by the satellite is input from the common port 11 of the orthogonal mode transducer 1 to the orthogonal mode transducer 1, the rectangular coupling port 13 is used to couple the y polarization signal in the first electromagnetic wave to the waveguide filter 2, so that the y polarization signal in the first electromagnetic wave is transmitted to the waveguide output port 31 of the turn waveguide 3 through the waveguide filter 2, and the receiving of the first electromagnetic wave is completed. Wherein, a plurality of rectangular cavities (not marked in the figure) can be provided behind the rectangular coupling port 13, and the transmission of the y polarization signal in the first electromagnetic wave from the orthogonal mode transducer 1 to the waveguide filter 2 is realized through the rectangular cavity 14. The main mode of the electromagnetic wave transmitted by the rectangular coupling port 13 is also TE 10 mode.

[0034] After receiving the y polarization signal in the first electromagnetic wave, the waveguide filter 2 is used to filter the y polarization signal in the first electromagnetic wave, filter out the signals of the frequency bands that are not needed, and transmit the filtered signals to the turn waveguide 3 so that the signals are output from the waveguide output port 31 of the turn waveguide 3. Wherein, the waveguide filter 2 includes a waveguide input port and a waveguide output port. The waveguide input port is connected with the rectangular coupling port 13 of the orthogonal mode transducer 1 to receive the y polarization signal in the first electromagnetic wave, and the waveguide output port is connected with the turn waveguide 3 to transmit the filtered signals.

[0035] The electromagnetic wave transmitting mode of the orthogonal mode transducer 1 is that the transmitting port 12 of the orthogonal mode transducer 1 is used to receive the electromagnetic wave (i.e. the second electromagnetic wave) from the block upconverters (BUC), and the electromagnetic wave transmitted by the block upconverters is also the orthogonal polarization signal containing the x polarization signal and the y polarization signal, and the orthogonal mode transducer 1 needs to separate the y polarization signal and the x polarization signal in the electromagnetic wave and transmit the x polarization signal from the common port 11.

[0036] In order to realize the electromagnetic wave emission of the above-mentioned orthogonal mode converter 1, the first impedance transformation structure 14 is arranged between the common port 11 and the emission port 12 in the embodiment, and after the second electromagnetic wave is received by the emission port 12, the first impedance transformation structure 14 is used to transmit the x-polarized signal in the second electromagnetic wave to the common port 11, so as to complete the emission of the second electromagnetic wave. The common port 11 is a circular waveguide port, and the emission port 12 is a rectangular waveguide port. The first impedance transformation structure 14 can also be understood as a rectangle-circle transformation structure.

[0037] In the embodiment, the first impedance transformation structure 14 is a stepped impedance transformation structure, and the size of the step gradually increases along the emission port.

[0038] In the specific implementation, in order to avoid that part of the electromagnetic wave enters the waveguide filter 2 through the rectangular coupling port 13 opened on the side of the orthogonal mode converter 1 in the process of transmitting the second electromagnetic wave from the emission port 12 to the satellite through the common port 11, the rectangular coupling port 13 is also used to prevent the second electromagnetic wave from entering the waveguide filter 2, so that the loss of the electromagnetic wave emitted to the satellite can be avoided. In order to avoid that part of the electromagnetic wave is output from the emission port 12 of the orthogonal mode converter 1 in the process of transmitting the first electromagnetic wave from the common port 11 to the waveguide filter 2, the first impedance transformation structure 14 is also used to prevent the y-polarized signal in the first electromagnetic wave from being transmitted to the emission port 12, so that the loss of the electromagnetic wave received from the satellite can be avoided.

[0039] The assembled orthogonal mode converter-filter assembly provided by the embodiments of the present application is provided with a rectangular coupling port on the contact surface of the orthogonal mode converter and the waveguide filter. After the first electromagnetic wave transmitted by the satellite is received by the common port of the orthogonal mode converter, the rectangular coupling port can couple the y-polarized signal in the first electromagnetic wave to the waveguide filter, so that the signal is transmitted to the waveguide output port of the turning waveguide after passing through the waveguide filter, and the reception of the first electromagnetic wave is completed. The rectangular coupling port realizes the separation of the x-polarized signal and the y-polarized signal in the first electromagnetic wave, and simultaneously realizes the transmission of the y-polarized signal in the first electromagnetic wave from the orthogonal mode converter to the waveguide filter. Compared with the traditional independent structure of the cascaded filter, the scheme of realizing the reception of the first electromagnetic wave by the electromagnetic coupling between the orthogonal mode converter and the waveguide filter through the rectangular coupling port eliminates the connection waveguide for transmitting the y-polarized signal in the first electromagnetic wave from the orthogonal mode converter to the waveguide filter, thereby reducing the size and processing cost of the entire assembled orthogonal mode converter-filter assembly. Moreover, the rectangular coupling port is also used to prevent the x-polarized signal in the second electromagnetic wave transmitted to the satellite from entering the waveguide filter, and the first impedance transformation structure is also used to prevent the y-polarized signal in the first electromagnetic wave received from the satellite from being transmitted to the transmission port, thereby avoiding the output of the received part of the first electromagnetic wave from the transmission port, causing the loss of the first electromagnetic wave received from the satellite, and avoiding the entry of part of the transmitted second electromagnetic wave into the waveguide filter, causing the loss of the electromagnetic wave transmitted to the satellite.

[0040] In some embodiments, continuing to refer to the structure of the orthogonal mode converter 1 shown in Figure 2 The first impedance transformation structure 14 is connected with the transmission port 12 and located at the upper part of the orthogonal mode converter 1, and the second impedance transformation structure 15 is connected with the common port 11 and located at the lower part of the orthogonal mode converter 1. After the first electromagnetic wave transmitted by the satellite is input from the common port 11 of the orthogonal mode converter 1 to the orthogonal mode converter 1, the second impedance transformation structure 15 is used to perform impedance transformation processing on the second electromagnetic wave processed by the first impedance transformation structure, so as to reduce the reflection coefficient of the second electromagnetic wave processed by the first impedance transformation structure.

[0041] In some embodiments, continuing to refer to the structure of the orthogonal mode converter 1 shown in Figure 2The structure of the orthogonal mode transducer 1 is shown: between the first impedance conversion structure 14 and the second impedance conversion structure 15, a probe 16 perpendicular to the y direction of the orthogonal mode transducer 1 is arranged, which is used to resonate with the y polarized signal in the first electromagnetic wave and couple the y polarized signal in the first electromagnetic wave to the rectangular coupling port 13 after the satellite transmitted first electromagnetic wave is input from the common port 11 of the orthogonal mode transducer 1 to the orthogonal mode transducer 1. In a specific implementation, the probe 16 is used in combination with the rectangular coupling port 13 to further couple the y polarized signal in the first electromagnetic wave to the waveguide filter 2, and the main mode of the electromagnetic wave transmitted by the probe 16 is also TE 10 Thus, it is ensured that the y polarized signal in the first electromagnetic wave can be completely coupled to the waveguide filter 2, and the loss of the received satellite first electromagnetic wave is avoided.

[0042] In some embodiments, the specific structure of the waveguide filter 2 is shown in Figure 3 which includes a plurality of coupling diaphragms 21 arranged along the horizontal direction of the waveguide filter 2, and the two outermost coupling diaphragms 21 are connected with the two side walls of the waveguide filter 2 respectively, so that a plurality of resonant cavities are formed in the waveguide filter 2, which are used to filter the y polarized signal in the first electromagnetic wave transmitted by the orthogonal mode transducer 1, that is, to filter out the frequency band signals that are not needed by the subsequent device. With the increase of the number of resonant cavities, the out-of-band rejection performance of the waveguide filter 2 can be improved, thereby improving the filtering performance of the waveguide filter 2, and the number of resonant cavities depends on the number of coupling diaphragms 21, so the filtering performance of the waveguide filter 2 can be further improved by increasing the number of coupling diaphragms 21. In a specific example, the number of coupling diaphragms 21 can be 7, and the number of resonant cavities is 8.

[0043] Among the plurality of coupling diaphragms, the distance between the adjacent two coupling diaphragms 21 is half the wavelength of the center frequency of the second electromagnetic wave.

[0044] In some embodiments, the specific structure of the turning waveguide 3 can also be seen from Figure 3 which is specifically arranged as a stepped structure, and the size of the step gradually increases downward along the contact surface of the turning waveguide 3 and the waveguide filter 2. The shape of the turning waveguide 3 is to match the subsequent device of the turning waveguide 3, that is, the low noise block (LNB), so as to be connected with it. Figure 4 The receiving port 31 in the figure is the waveguide output port of the above-mentioned turning waveguide 3.

[0045] In some embodiments, flanges (including flange 15 of the common port 11 and flange 16 of the transmitting port 12) matching the shapes of the common port 11 and the transmitting port 12 are arranged on the periphery of the common port 11 and the transmitting port 12, which facilitates the installation of the assembly. Figure 4 and 5 .

[0046] To better illustrate the assembled orthogonal mode transducer-filter assembly of the embodiments of the present application, the performance of the assembled orthogonal mode transducer-filter assembly when applied to the Ku band is tested as follows: the return loss of the common port 11, the transmitting port 12, and the receiving port 31 of the assembled orthogonal mode transducer-filter assembly under the incidence of x-direction polarized electromagnetic waves, as shown in Figure 6 , the return loss of the common port 11, the transmitting port 12, and the receiving port 31 of the assembled orthogonal mode transducer-filter assembly under the incidence of y-direction polarized electromagnetic waves, as shown in Figure 7 , the insertion loss parameter curve between the common port 11 and the receiving port 31 of the assembled orthogonal mode transducer-filter assembly under x and y direction polarization, as shown in Figure 8 , the insertion loss parameter curve between the common port 11 and the transmitting port 12 of the assembled orthogonal mode transducer-filter assembly under x and y direction polarization, as shown in Figure 9 , and the isolation between the transmitting port 12 and the receiving port 31 of the assembled orthogonal mode transducer-filter assembly, as shown in Figure 10 .

[0047] The above test results show that the high-frequency (transmitting) insertion loss of the orthogonal mode transducer-filter assembly is less than 0.1 dB, the low-frequency (receiving) insertion loss is less than 0.3 dB, the high-frequency (transmitting) return loss is less than -25 dB, the low-frequency (receiving) return loss is less than 18 dB, and the transmission-reception isolation is better than 40 dB in the low-frequency band and better than 90 dB in the high-frequency band, which can meet the requirements of microwave communication under harsh conditions.

[0048] It should be noted that the orthogonal mode transducer-filter assembly of the embodiments of the present application can not only be applied to the Ku and Ka communication frequency bands, but also can be extended to other microwave communication frequency bands.

[0049] Another embodiment of the present application relates to an electronic device comprising the orthogonal mode transducer-filter assembly of any of the above embodiments.

[0050] It can be found that the embodiment is a device embodiment corresponding to the above component embodiment, and the embodiment can be implemented in cooperation with the above component embodiment. The related technical details and technical effects mentioned in the above embodiments are still valid in this embodiment. In order to reduce repetition, they will not be described here. Accordingly, the related technical details mentioned in the present embodiment can also be applied to the above embodiments.

[0051] Those skilled in the art can understand that the above embodiments are specific embodiments for implementing the present disclosure, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the embodiments of the present disclosure. Any person skilled in the art can make various modifications and modifications without departing from the spirit and scope of the embodiments of the present disclosure. Therefore, the protection scope of the embodiments of the present disclosure should be subject to the scope defined by the claims.

Claims

1. An assembled orthogonal mode converter-filter assembly, characterized in that: include: An orthogonal mode converter, a waveguide filter and a turning waveguide, wherein the orthogonal mode converter and the turning waveguide are respectively arranged on both sides of the waveguide filter; The orthogonal mode converter is provided with a common port and a transmitting port at the upper and lower ends, respectively. The common port and the transmitting port are connected vertically. The common port is used to receive a first electromagnetic wave transmitted by the satellite and transmit a second electromagnetic wave input from the transmitting port to the satellite. The first electromagnetic wave and the second electromagnetic wave are both orthogonally polarized signals including an x-polarization signal and a y-polarization signal. A rectangular coupling port is provided on the contact surface between the orthogonal mode converter and the waveguide filter. The rectangular coupling port is used to couple the y-polarized signal in the first electromagnetic wave to the waveguide filter after the common port receives the first electromagnetic wave, so that the y-polarized signal in the first electromagnetic wave is transmitted to the waveguide output port of the turn waveguide after passing through the waveguide filter, thereby completing the reception of the first electromagnetic wave. A first impedance transformation structure is provided between the common port and the transmitting port, and the first impedance transformation structure is used to transmit the x-polarization signal in the second electromagnetic wave to the common port after the transmitting port receives the second electromagnetic wave, thereby completing the transmission of the second electromagnetic wave; The rectangular coupling port is further used to prevent the x-polarized signal in the second electromagnetic wave from being transmitted to the waveguide filter, and the first impedance transformation structure is further used to prevent the y-polarized signal in the first electromagnetic wave from being transmitted to the transmitting port.

2. The assembled orthogonal mode converter-filter assembly according to claim 1, characterized in that: A second impedance transformation structure is further provided between the common port and the transmitting port, the first impedance transformation structure is connected to the transmitting port, and the second impedance transformation structure is connected to the common port; The second impedance transformation structure is used to perform impedance transformation on the second electromagnetic wave processed by the first impedance transformation structure, so as to reduce the reflection coefficient of the second electromagnetic wave processed by the first impedance transformation structure.

3. The assembled orthogonal mode converter-filter assembly according to claim 2, characterized in that: A probe perpendicular to the y direction of the orthogonal mode converter is provided between the first impedance transformation structure and the second impedance transformation structure. The probe is used to resonate with the y-polarized signal in the first electromagnetic wave after receiving the first electromagnetic wave at the common port, and couple the y-polarized signal in the first electromagnetic wave to the rectangular coupling port.

4. The assembled orthogonal mode converter-filter assembly according to claim 3, characterized in that: The first impedance transformation structure is a step-shaped impedance transformation structure, and the size of the step gradually increases upward along the transmitting port.

5. The assembled orthogonal mode converter-filter assembly according to claim 1, characterized in that: The waveguide filter includes a plurality of coupling diaphragms arranged in a horizontal direction of the waveguide filter. The two outermost coupling diaphragms are respectively connected to two side walls of the waveguide filter, so that a plurality of resonant cavities are formed in the waveguide filter. The resonant cavities are used to filter the y-polarized signal in the first electromagnetic wave.

6. The assembled orthogonal mode converter-filter assembly according to claim 5, characterized in that: Among the plurality of coupling films, a distance between two adjacent coupling films is half a wavelength of a center frequency of the first electromagnetic wave.

7. The assembled orthogonal mode converter-filter assembly according to claim 6, characterized in that: The number of the coupling diaphragms is 7.

8. The assembled orthogonal mode converter-filter assembly according to claim 1, characterized in that: The turning waveguide has a step-shaped structure, and the size of the step gradually increases downward along the contact surface between the turning waveguide and the waveguide filter.

9. The assembled orthogonal mode converter-filter assembly according to any one of claims 1 to 8, characterized in that: The outer peripheries of the common port and the emission port are provided with flanges respectively matching the shapes of the common port and the emission port.

10. An electronic device, characterized in that: The method comprises the assembled orthogonal mode converter-filter assembly according to any one of claims 1 to 9.

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