Device for switching waveguide to substrate integrated waveguide

Abstract

The invention discloses a device for switching a waveguide to a substrate integrated waveguide. The device comprises a special waveguide and a substrate integrated waveguide; the substrate integrated waveguide consists of a top metal layer, a dielectric substrate and a bottom metal layer; the top metal layer is etched with first multi-folding fin line gaps; the bottom metal layer is etched with second multi-folding fin line gaps; the special waveguide comprises an upper metal block and a lower metal block, the upper metal block is provided with a first waveguide slot, and the lower metal block is provided with a second waveguide slot and a substrate slot; the substrate integrated waveguide is put into the substrate slot, the first multi-folding fin line gaps are matched and aligned with the first waveguide slot, and the second multi-folding fin line gaps are matched and aligned with the second waveguide slot; and the first waveguide slot and the second waveguide slot form a waveguide opening of a standard waveguide. The device has the advantages of wide band, low insertion loss, low reflection coefficient, low machining cost, low machining difficulty and small size, so the device is favorable for large-scale production and application.

Description

technical field [0001] The invention relates to a conversion device from a waveguide to a substrate integrated waveguide formed by connecting a special waveguide with a substrate integrated waveguide etched with multi-fold fin line gaps on the surface, belonging to the technical field of microwave and millimeter wave devices. Background technique [0002] In the microwave wireless communication system, the microwave circuit has always been a very important basic hardware, so it has received great attention from people. At the end of the 19th century, the development of electromagnetic field and electromagnetic wave theory gave birth to the basic concept of microwave circuits, and the guided wave structure is the basis of microwave circuits, which is related to the overall performance of microwave systems. With the development of guided wave structures until the beginning of the 21st century, researchers proposed low-loss, easy-to-integrate, and miniaturized substrate-integra...

AI Technical Summary

Problems solved by technology

However, for frequency bands above 50GHz, coaxial connectors are particularly expensive, and coaxial connectors and coaxial cables are particularly susceptible to interference in such high frequency bands, and performance degradation is very serious. Therefore, people usually use traditional metal waveguides for connection and testing

The current switching technology from substrate integrated waveguide to waveguide has too much loss, narrow working bandwidth, and great processing difficulty, which greatly limits the development of substrate integrated waveguide circuits, and has great impact on the design and testing of substrate integrated waveguide circuits. come a big obstacle

Images