Method for independently adjusting frequency and bandwidth of multi-passband filter and multi-passband filter

Abstract

The invention relates to a method for independently regulating the frequency and bandwidth of a multi-mode resonator, which includes one or several multi-mode resonators and one or several auxiliary coupling blocks, by adjusting the size of the main body and the loading part of the multi-mode resonator To change the operating frequency of the multi-passband filter, and make the parasitic passband far away from the required work passband, and change the coupling strength of the coupling path between the multimode resonators by adjusting the position and size of the auxiliary coupling block; the present invention also A multi-pass band filter is provided, in which multi-mode resonators adjust the operating frequency of the multi-pass band filter to corresponding frequencies, and an auxiliary coupling block is used to change the coupling strength of coupling paths between the multi-mode resonators. Adopting the method of the present invention simplifies the operation of independently regulating the frequency and bandwidth of the multi-passband filter, has a large degree of freedom, and can realize a high-performance high-order multi-passband filter, and its corresponding multi-passband The filter volume is smaller, and it has broad application prospects.

Description

technical field [0001] The invention relates to the field of microwave technology, in particular to the field of filter technology, in particular to a method for independently adjusting and controlling the frequency and bandwidth of a multi-passband filter and the multi-passband filter. Background technique [0002] In the field of civil communication, the rapid development of wireless communication technology has put forward higher requirements for a multi-functional radio frequency receiving front end. The dual-passband / multi-passband filter that supports multi-frequency point communication and can accurately select the multi-band signals required by the system has become a key device, and has broad application prospects in multi-mode mobile communications. In the military, high-tech warfare in complex electromagnetic environments has become commonplace. Stealth and counter-stealth, jamming and counter-jamming, suppression and counter-suppression all place ever higher dem...

AI Technical Summary

Problems solved by technology

[0008] Therefore, there is an urgent need to realize a multi-passband filter whose frequency and bandwidth can be freely and independently adjusted, but there are great design difficulties. It is even more difficult to realize a high-order multi-passband filter that meets the above requirements. more difficult

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