Folding structure adjustable window dielectric filter

Abstract

The invention discloses a folding structure adjustable window dielectric filter which comprises a first dielectric module, a second dielectric module and a test board. The first dielectric module is of a cuboid structure, the center of the bottom surface of the first dielectric module is of a counter bore structure to form a first resonant cavity, and the two sides of the first dielectric module are provided with the first coupling windows which are symmetrically arranged. The two ends of the bottom surface of the first medium module are provided with an input port and an output port, the second dielectric module is attached to the top surface of the first dielectric module, and the center of the top surface of the second dielectric module is of a counter bore structure to form a second resonant cavity. The two ends of the second dielectric module are provided with the second side coupling windows, and the center of the second dielectric module is provided with a second center couplingmodule. The test board is of a rectangular plate-shaped structure and is attached to the bottom surface of the first dielectric module. The folding structure adjustable window dielectric filter is more stable in electrical performance input and output, enables the production cost to be reduced and the debugging production efficiency to be improved, is suitable for the communication equipment in an infinite base station, and is wide in application range.

Description

technical field [0001] The invention relates to the field of filters, in particular to a folded structure adjustable window dielectric filter. Background technique [0002] Dielectric filter (English Dielectric filter) is designed and manufactured by using the characteristics of low loss, high dielectric constant, frequency temperature coefficient and thermal expansion coefficient of dielectric ceramic materials, and can withstand high power. It is composed of several long resonators in vertical multi-stage series Or parallel trapezoidal lines. A dielectric filter is a microwave filter that uses a dielectric first resonant cavity to achieve frequency selection through multi-stage coupling. [0003] At present, dielectric filters have been widely used in communication equipment of wireless base stations and other electronic equipment. The general structure of this dielectric filter includes a first dielectric module, a second dielectric module and a test board. In the exis...

AI Technical Summary

Problems solved by technology

In the existing dielectric filter structure, there are following technical defects: (1) the end of the first dielectric module is provided with an input port and an output port, and the test board is generally directly inserted into the direct contact of the input port or the output port. The connection is not tight, and the signal transmission of the input port and the output port is unstable when the electrode column is outputting the signal

(2) The first media module and the second media module generally adopt the same structural form, and the matching between the first media module and the second media module is poor

The result is not only waste of material, higher production costs, but also reduced productivity

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