Microstrip broadband dual-frequency combining method and combiner

Abstract

The invention discloses a microstrip broadband dual-frequency combining method. The method comprises the following steps of: preparing a metal box which comprises a cover plate and a box body; arranging a radio frequency input port A and a radio frequency input port B on one side of the box body; arranging a radio frequency output port on the other side of the box body; fixing a medium substrate in the box body; arranging a band-stop filter A and a band-stop filter B on the medium substrate; accessing a broadband signal A and a broadband signal B to be combined from the radio frequency input ports; making the broadband signal A pass through the radio frequency input port A; making the broadband signal B pass through the radio frequency input port B; performing filtering on the broadband signal A by using a microstrip transmission line A of the band-stop filter A; forming high out-band rejection on the broadband signal B in the range of the broadband signal B by using a 1 / 4 wavelength branch open-circuit line of the band-stop filter A; performing filtering on the broadband signal B by using a microstrip transmission line B of a band-stop filter B; and forming high out-band rejection on the broadband signal A in the range of the broadband signal A by using the 1 / 4 wavelength branch open-circuit line of the band-stop filter B.

Description

technical field [0001] The present invention relates to a combiner, in particular to a micro-broadband dual-frequency combiner method and a combiner for realizing the method. Background technique [0002] In the existing technology, the development of communication technology is changing with each passing day, reducing the size and weight of the module, reducing the system cost, and the signal transmission mode of the antenna feeder system shared by multiple frequency bands is becoming more and more common. Therefore, the multi-band combining and splitting technology has become Development has become an important part of the development of communication technology. [0003] The traditional combiner is generally composed of two coaxial cavity bandpass filters, the relative bandwidth of this combiner is only 20%, or even lower, and because the coaxial cavity filter is cascaded using resonant cavity coupling Realization makes the structure of the combiner realized in this way ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a micro-broadband dual-frequency combining method, which solves the problems of high difficulty in assembly and debugging of the combiner and poor controllability

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