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Forward wave directional coupler based on microstrip lines and substrate integrated waveguide structure

A substrate-integrated waveguide and directional coupler technology, applied in waveguide devices, electrical components, connection devices, etc., to achieve the effects of low cost, high application frequency, and simple design

Active Publication Date: 2021-01-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

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Problems solved by technology

However, the research on the forward wave directional coupler reported above is focused on the microwave frequency band, and the main research is the strong coupling design of 0 dB and 3 dB. The forward wave directional coupler in the millimeter wave band has not been reported yet.

Method used

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  • Forward wave directional coupler based on microstrip lines and substrate integrated waveguide structure
  • Forward wave directional coupler based on microstrip lines and substrate integrated waveguide structure
  • Forward wave directional coupler based on microstrip lines and substrate integrated waveguide structure

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments.

[0023] A forward wave directional coupler based on a microstrip line and a substrate integrated waveguide structure, characterized in that it includes a double-sided substrate 1, and two microstrip lines 2 are arranged on the surface of the double-sided substrate 1, The two microstrip lines 2 are parallel to each other, a number of substrate integrated waveguides 3 are arranged between the two microstrip lines 2, and the ends of the substrate integrated waveguides 3 are connected to the adjacent microstrip lines 2 A triangular microstrip transition section 5 is arranged between them, and a plurality of integrated waveguide short-circuit via holes 4 are arranged on both sides of the substrate integrated waveguide 3;

[0024] The ends of the two microstrip lines 2 respectively form an input port 6.1, a through port 6.2, a coupling port ...

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Abstract

The invention relates to a forward wave directional coupler based on microstrip lines and a substrate integrated waveguide structure, which comprises a double-sided substrate, two microstrip lines arearranged on the surface of the double-sided substrate, the two microstrip lines are parallel to each other, and a plurality of substrate integrated waveguides are arranged between the two microstriplines. A triangular micro-strip transition section is arranged between the end part of the micro-strip substrate integrated waveguide and the adjacent micro-strip line; a plurality of substrate integrated waveguide short-circuit via holes are formed in the edges of the two sides of the substrate integrated waveguide; and an input port, a straight-through port, a coupling port and an isolation portare respectively formed at the end parts of the two microstrip lines. According to the forward wave directional coupler based on the microstrip line and the substrate integrated waveguide structure,millimeter wave energy coupling covering a specified frequency band can be achieved through manufacturing of a double-sided PCB, and reduction of the cost of large-scale commercial application is facilitated.

Description

technical field [0001] The invention relates to the field of electromagnetic field and microwave technology, in particular to a forward wave directional coupler based on a microstrip line and a substrate integrated waveguide structure. Background technique [0002] Directional couplers are an important class of key passive components in communications and radar front-end system designs. For the millimeter wave frequency band, there are many methods for designing and manufacturing the required directional coupler, such as designing a V-band branch line coupler in the 22nm FDSOI-CMOS process, designing a microwave guide millimeter wave coupler using the MEMS process, Even rat-race hybrid couplers are designed based on a silicon-based micro-coaxial process. However, for high-volume civilian millimeter-wave front-end designs, it is necessary to study low-cost couplers based on double-sided PCB technology. [0003] In recent years, the forward-wave directional coupler based on ...

Claims

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Application Information

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IPC IPC(8): H01P5/18
CPCH01P5/18H01P5/184
Inventor 施永荣吴启晖冯文杰于正永易鑫沈瑞亮
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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