A waveguide - stripline conversion device and an integrated circuit

Abstract

The present application provides a waveguide - stripline conversion device and an integrated circuit, relating to the field of microwave transmission technology. The waveguide - stripline conversion device includes a stripline and a waveguide. The stripline includes an inner conductor, and a metal block is connected inside the waveguide and contacts the inner conductor. The integrated circuit includes the above - mentioned waveguide - stripline conversion device. This waveguide - stripline conversion device can directly convert the stripline into a waveguide or directly convert the waveguide into a stripline. There is only one microwave loss during the conversion process, and the microwave loss is relatively small. The integrated circuit has a high microwave conversion efficiency and low loss.

Description

Technical Field

[0001] This application relates to the field of microwave transmission technology. Specifically, it relates to a waveguide - stripline conversion device and an integrated circuit. Background Art

[0002] In the current related technologies, to convert from a stripline to a waveguide, two conversions are required. That is, first convert from the stripline to a coaxial cable, and then convert from the coaxial cable to a waveguide. Since each conversion will cause microwave loss, the microwave loss of the two conversions is relatively large. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a waveguide - stripline conversion device, which aims to improve the problem of relatively large microwave loss in two conversions in the related technologies.

[0004] The embodiments of this application provide a waveguide - stripline conversion device. The waveguide - stripline conversion device includes a stripline and a waveguide. The stripline includes an inner conductor, and a metal block is connected inside the waveguide and contacts the inner conductor. This waveguide - stripline conversion device can directly convert the stripline to a waveguide, or directly convert the waveguide to a stripline. During the conversion process, there is only one microwave loss, the microwave loss is relatively small, and the conversion efficiency is relatively high. By setting the inner conductor and the metal block, it is convenient to transmit microwaves and reduce reflection.

[0005] As an optional technical solution of the embodiments of this application, the two ends in the length direction of the waveguide are respectively a waveguide interface and a closed end, the metal block contacts the closed end, and the length direction of the stripline is perpendicular to the length direction of the waveguide. One end of the waveguide is closed to form a short - circuit wall. When microwaves are transmitted, after reflection at the closed end, the direction of the microwaves is changed, so that the microwaves entering from the stripline interface just output from the waveguide interface, or the microwaves entering from the waveguide interface just output from the stripline interface.

[0006] As an optional technical solution of the embodiments of this application, the metal block is in a stepped shape, and the inner conductor contacts the small end of the metal block. The stepped - shaped metal block changes the impedance characteristic of the waveguide, making its impedance gradually transition to facilitate reducing microwave reflection.

[0007] As an optional technical solution of the embodiments of this application, the stripline is close to the closed end. Setting the stripline close to the closed end enables microwaves to form reflection at the closed end and change direction, so that the microwaves entering from the stripline interface just output from the waveguide interface, or the microwaves entering from the waveguide interface just output from the stripline interface.

[0008] As an alternative technical solution of the embodiment of the present application, the distance from the strip line to the waveguide interface is three times the distance from the strip line to the closed end. If the length of the waveguide is set to one wavelength, the distance from the strip line to the closed end is one-quarter wavelength, and the round trip is exactly 180°, realizing the change of the microwave direction and transmitting the microwave energy to the waveguide interface or the strip line interface.

[0009] As an alternative technical solution of the embodiment of the present application, the strip line is connected to the middle of the waveguide in the width direction, and the metal block is connected to the middle of the waveguide in the width direction. The electric field is the strongest in the middle of the waveguide in the width direction, and the electromagnetic energy can be coupled to the maximum extent. Therefore, connecting the strip line and the metal block to the middle of the waveguide in the width direction has a better effect.

[0010] As an alternative technical solution of the embodiment of the present application, the inner conductor is fixedly connected to the metal block. Fixing the inner conductor to the metal block has better stability.

[0011] As an alternative technical solution of the embodiment of the present application, the inner conductor includes a probe section and an interface section, and the probe section and the interface section are connected. The probe section extends into the waveguide and contacts the metal block. The interface section extends to the strip line interface of the strip line. Setting the interface section facilitates the connection with the strip line to be converted, and setting the probe section facilitates the contact with the metal block.

[0012] As an alternative technical solution of the embodiment of the present application, the probe section is cylindrical or prismatic. Setting the probe section as cylindrical or prismatic facilitates the contact with the metal block and realizes microwave transmission.

[0013] The embodiment of the present application also provides an integrated circuit, and the integrated circuit includes the waveguide-strip line conversion device in any one of the above. The integrated circuit has high microwave conversion efficiency and low loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a cross-sectional view of the waveguide-strip line conversion device provided by the embodiment of the present application;

[0016] Figure 2 It is a schematic structural diagram of the waveguide-strip line conversion device provided by the embodiment of the present application from the first perspective.

[0017] Icons: 100 - stripline; 110 - inner conductor; 111 - probe section; 112 - interface section; 130 - stripline interface; 200 - waveguide; 210 - metal block; 220 - waveguide interface; 230 - closed end. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0020] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships when the product of the application is normally placed, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0022] In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0024] Embodiment

[0025] Please refer to Figure 1 , this embodiment provides a waveguide - stripline conversion device. The waveguide - stripline conversion device includes a stripline 100 and a waveguide 200. The stripline 100 includes an inner conductor 110. A metal block 210 is connected inside the waveguide 200, and the metal block 210 is in contact with the inner conductor 110. This waveguide - stripline conversion device can directly convert the stripline 100 into a waveguide 200, or directly convert the waveguide 200 into a stripline 100. There is only one microwave loss during the conversion process, the microwave loss is small, and the conversion efficiency is high. By arranging the inner conductor 110 and the metal block 210, it is convenient to transmit microwaves and reduce reflection.

[0026] Please refer to Figure 1 , in this embodiment, the two ends of the waveguide 200 in the length direction are a waveguide interface 220 and a closed end 230 respectively. The metal block 210 is in contact with the closed end 230, and the length direction of the stripline 100 is perpendicular to the length direction of the waveguide 200. One end of the waveguide 200 is closed to form a short - circuit wall. When microwaves are transmitted, after reflection by the closed end 230, the direction of the microwaves is changed, so that the microwaves entering from the stripline interface 130 just output from the waveguide interface 220, or the microwaves entering from the waveguide interface 220 just output from the stripline interface 130.

[0027] Please refer to Figure 1 , in this embodiment, the stripline 100 is close to the closed end 230. Setting the stripline 100 close to the closed end 230 enables microwaves to form a reflection at the closed end 230 and change direction, so that the microwaves entering from the stripline interface 130 just output from the waveguide interface 220, or the microwaves entering from the waveguide interface 220 just output from the stripline interface 130. It should be noted that, please refer to Figure 1 , the stripline 100 being close to the closed end 230 should be understood as: compared with the waveguide interface 220, the stripline 100 is closer to the closed end 230. In other words, the distance between the stripline 100 and the closed end 230 should be greater than the distance between the stripline 100 and the waveguide interface 220. Please refer to Figure 1 , in this embodiment, the distance from the stripline 100 to the waveguide interface 220 is three times the distance from the stripline 100 to the closed end 230. If the length of the waveguide 200 is set to one wavelength, the distance from the stripline 100 to the closed end 230 is one - quarter wavelength. Going there and back is exactly 180°, realizing the change of the microwave direction and transmitting the microwave energy to the waveguide interface 220 or the stripline interface 130.

[0028] Please refer to Figure 1 For reference in conjunction with Figure 2, in this embodiment, the strip line 100 is connected to the middle part in the width direction of the waveguide 200, and the metal block 210 is connected to the middle part in the width direction of the waveguide 200. The electric field is the strongest in the middle part in the width direction of the waveguide 200, and can couple electromagnetic energy to the maximum extent. Therefore, connecting the strip line 100 and the metal block 210 to the middle part in the width direction of the waveguide 200 has a better effect. It should be noted that "the strip line 100 is connected to the middle part in the width direction of the waveguide 200" should be understood as that the strip line 100 is approximately located in the middle part in the width direction of the waveguide 200, rather than necessarily requiring the strip line 100 to be absolutely located in the middle part in the width direction of the waveguide 200. Similarly, "the metal block 210 is connected to the middle part in the width direction of the waveguide 200" should be understood as that the metal block 210 is approximately located in the middle part in the width direction of the waveguide 200, rather than necessarily requiring the metal block 210 to be absolutely located in the middle part in the width direction of the waveguide 200.

[0029] Please refer to Figure 1 , in this embodiment, the metal block 210 is in a stepped shape, and the inner conductor 110 contacts the small end of the metal block 210. The stepped metal block 210 changes the impedance characteristic of the waveguide 200, making its impedance gradually transition, so as to reduce microwave reflection. Please refer to Figure 1 , in this embodiment, the left side of the metal block 210 has two levels of steps, and the step located at the lowermost layer contacts the closed end 230 of the waveguide 200. The right side of the metal block 210 has three levels of steps. The step located at the lowermost layer has the smallest thickness and has a certain interval from the waveguide interface 220. In addition, the step in the middle layer on the right side has a higher height than the step located at the lowermost layer on the left side.

[0030] Please refer to Figure 1 , in this embodiment, the inner conductor 110 includes a probe section 111 and an interface section 112, and the probe section 111 and the interface section 112 are connected. The probe section 111 extends into the waveguide 200, and the probe section 111 contacts the metal block 210. The interface section 112 extends to the strip line interface 130 of the strip line 100. Setting the interface section 112 facilitates the connection with the strip line to be transferred. By setting the probe section 111, it is convenient to contact the metal block 210. The probe section 111 is in a cylindrical or prismatic shape. Setting the probe section 111 in a cylindrical or prismatic shape facilitates the contact with the metal block 210 and realizes microwave transmission.

[0031] It should be noted that the inner conductor 110 is fixedly connected to the metal block 210. Fixing the inner conductor 110 to the metal block 210 has better stability. In this embodiment, that is, the end of the probe section 111 far from the interface section 112 is fixedly connected to the metal block 210, for example, by welding.

[0032] This embodiment provides a waveguide - stripline conversion device, which includes a stripline 100 and a waveguide 200. The stripline 100 includes an inner conductor 110. A metal block 210 is connected inside the waveguide 200, and the metal block 210 is in contact with the inner conductor 110. The two ends of the waveguide 200 in the length direction are a waveguide interface 220 and a closed end 230 respectively. The metal block 210 is in contact with the closed end 230, and the length direction of the stripline 100 is perpendicular to the length direction of the waveguide 200. The distance from the stripline 100 to the waveguide interface 220 is three times the distance from the stripline 100 to the closed end 230. The metal block 210 is in a stepped shape, and the inner conductor 110 is in contact with the small end of the metal block 210. This waveguide - stripline conversion device can directly convert the stripline 100 into the waveguide 200, or directly convert the waveguide 200 into the stripline 100. There is only one microwave loss during the conversion process, the microwave loss is small, and the conversion efficiency is high. By arranging the inner conductor 110 and the metal block 210, it is convenient to transmit microwaves and reduce reflection.

[0033] An embodiment of the present application also provides an integrated circuit, which includes the above - mentioned waveguide - stripline conversion device. The integrated circuit has a high microwave conversion efficiency and low loss.

[0034] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A waveguide - stripline conversion device, characterized in that, the waveguide - stripline conversion device includes a stripline and a waveguide. The stripline includes an inner conductor. A metal block is connected inside the waveguide, and the metal block is in contact with the inner conductor; both ends of the waveguide in the length direction are a waveguide interface and a closed end respectively. One side of the metal block along the length direction of the waveguide has two - stage steps, and the step at the lowermost layer of the two - stage steps is in contact with the closed end. The other side of the metal block along the length direction of the waveguide has three - stage steps, and the step at the lowermost layer of the three - stage steps has the smallest thickness and has a certain interval from the waveguide interface. The step at the middle layer of the three - stage steps is higher than the step at the lowermost layer of the two - stage steps. The inner conductor is in contact with the small end of the metal block, and the length direction of the stripline is perpendicular to the length direction of the waveguide.

2. The waveguide - stripline conversion device according to claim 1, characterized in that, the stripline is close to the closed end.

3. The waveguide - stripline conversion device according to claim 2, characterized in that, the distance from the stripline to the waveguide interface is three times the distance from the stripline to the closed end.

4. The waveguide - stripline conversion device according to claim 1, characterized in that, the stripline is connected to the middle part in the width direction of the waveguide, and the metal block is connected to the middle part in the width direction of the waveguide.

5. The waveguide - stripline conversion device according to claim 1, characterized in that, the inner conductor is fixedly connected to the metal block.

6. The waveguide - stripline conversion device according to claim 1, characterized in that, the inner conductor includes a probe section and an interface section. The probe section and the interface section are connected. The probe section extends into the waveguide, the probe section is in contact with the metal block, and the interface section extends to the stripline interface of the stripline.

7. The waveguide - stripline conversion device according to claim 6, characterized in that, the probe section is cylindrical or prismatic.

8. An integrated circuit, characterized in that, the integrated circuit includes the waveguide - stripline conversion device according to any one of claims 1 - 7.

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