Transmission interconnect structure for matching terahertz waveguides to substrate-integrated waveguides

Abstract

The invention discloses a transmission interconnection structure for matching a terahertz waveguide and a substrate integrated waveguide, comprising a first rectangular feeding waveguide and a dielectric substrate, the rectangular feeding waveguide is provided with a first feeding port, the dielectric substrate and a second dielectric substrate A rectangular feeding waveguide is attached, the dielectric substrate is provided with a first stepped groove with a stepped edge profile extending along the first direction, a first metal wall is provided on one side of the first stepped groove, and the first stepped groove The part and the first metal wall are both aligned with the first feed port, and the dielectric substrate is provided with a plurality of metal columns, and each metal column is respectively arranged on both sides of the first stepped groove along the first direction. The invention can realize impedance matching and mode conversion from a rectangular terahertz waveguide to a substrate integrated waveguide; since there is no need to use a quarter-wavelength short-circuit surface, and no need to additionally process a gradient ridge structure inside the waveguide, it is easy to use PCB and other manufacturing processes. out, reducing the difficulty of processing and assembly. The invention is widely used in the field of electronic technology.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a transmission interconnection structure for matching a terahertz waveguide and a substrate integrated waveguide. Background technique [0002] Communication and radar electronic systems are developing toward greater data transmission rates and higher detection accuracy. In order to meet performance development requirements, radar communication frequencies must develop toward higher frequency bands, which have gradually developed from microwave and millimeter wave frequency bands to terahertz frequency bands. The antenna and transceiver front-end circuit of the millimeter-wave terahertz radar communication system usually use transmission lines such as waveguides, microstrips, coplanar waveguides, or substrate-integrated waveguides. Functional modules such as antennas and transceiver front-ends often use different transmission lines, which involve conversion design issues betw...

AI Technical Summary

Problems solved by technology

In the submillimeter wave, especially in the terahertz frequency band, the metal waveguide-planar transmission line conversion structure usually adopts microstrip probes, ridge waveguide conversion and other schemes. In order to achieve sufficient matching conversion bandwidth, a quarter-wavelength short-circuit surface must be used or inside the waveguide. Adding a gradient ridge structure, there are challenges such as processing and assembly difficulties

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