Transition structure from dielectric suspended line circuit to rectangular waveguide

Abstract

The invention discloses a transition structure from a dielectric suspended line circuit to a rectangular waveguide, and the structure comprises a first circuit board, a second circuit board, a third circuit board, a fourth circuit board, a fifth circuit board and a sixth circuit board, wherein the first, second, third, fourth, fifth and sixth circuit boards are sequentially riveted from the top to the bottom. The hollow-out cutting of the local areas of the second and fourth circuit boards is carried out to form a hollow-out cavity A and a hollow-out cavity B. The hollow-out cavity A, a metal layer on the front surface of the third circuit board, and a metal layer on the back surface of the first circuit board form a first suspended line air cavity structure. The hollow-out cavity B, a metal layer on the back surface of the third circuit board, and a metal layer on the front surface of the fifth circuit board form a second suspended line air cavity structure. The hollow-out cutting of the local parts of the first, second, fourth and fifth circuit boards is carried out to form a hollow-out cavity C, a hollow-out cavity D, a hollow-out cavity E and a hollow-out cavity F. The structure can achieve the integration of a novel dielectric integrated suspended line circuit and an external parts and testing equipment.

Description

technical field [0001] The invention relates to the field of radio frequency circuits and microwave and millimeter circuits, in particular to a transition structure from a dielectric integrated suspension line circuit to a rectangular waveguide. Background technique [0002] With the development of radio frequency circuits and microwave and millimeter circuits, multilayer circuit structures have been extensively studied and applied in order to achieve superior circuit performance such as miniaturization and high integration of circuit structures. The multi-layer circuit structure can realize the miniaturization of the circuit structure, high integration and three-dimensional integration of active and passive circuits. In non-planar transmission lines, waveguide suspension lines (including suspended strip lines, suspended microstrip lines, etc.) circuits have been proven to be very excellent transmission line systems. Compared with other planar transmission lines, the metal l...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a transition structure from a suspension line circuit to a rectangular waveguide composed of a multilayer circuit board riveted structure, which can realize the integration of a new dielectric integrated suspension line circuit with external components and testing equipment, and solve the problem of existing microstrip and common Microwave and millimeter-wave integrated circuits such as planar waveguides are difficult to solve the problem of integrated testing with dielectric integrated suspension lines due to serious dispersion, low quality factor, and high loss at high frequencies. Measurement provides the solution

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