Bandpass Filter Based on Triangular Substrate Integrated Resonator

Abstract

The invention discloses a bandpass filter based on a triangular substrate integrated resonator, comprising a first resonant cavity, a second resonant cavity, a third resonant cavity, a first microstrip line and a second microstrip line, the first and second , and the third resonant cavity all include a top metal layer, a dielectric substrate and a bottom metal layer parallel to each other from top to bottom. Triangular, metallized through holes parallel to the three edges of the dielectric substrate are arranged on the dielectric substrate. The first, second, and third resonant cavities use the two sides of the obtuse angle as the coupling surface, and couple two to form a bandpass filter. , the first microstrip line is connected to the midpoint belonging to the boundary of the first resonant cavity in the boundary of the bandpass filter, and the second microstrip line is connected to the midpoint of the boundary belonging to the second resonant cavity in the boundary of the bandpass filter. The invention solves the contradiction between the increase of the frequency range of the filter and the difficulty of industrial processing.

Description

technical field [0001] The invention belongs to the technical field of millimeter waves, and in particular relates to a band-pass filter based on a triangular substrate integrated resonator. Background technique [0002] In modern wireless communication, the microwave frequency band communication system has a lot of services, and the frequency resources are extremely tight. Future communication technology is developing towards a higher frequency band—millimeter wave. As a part used to separate signals, a filter is one of the key parts in a wireless communication system. Triangular substrate integrated resonators have the characteristics of high quality factor, low insertion loss, compact structure, high power capacity, etc., and are widely used in modern communications. As the frequency range continues to increase, the size of millimeter wave devices will continue to shrink. When the design size of millimeter-wave devices is reduced to a certain extent, due to the limitati...

AI Technical Summary

Problems solved by technology

When the design size of millimeter wave devices is reduced to a certain extent, due to the limitations of industrial processing technology, it will not be able to be precisely processed

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