A te01 hybrid cavity filter device

Abstract

The invention relates to a TE01 mixing cavity filter device and provides an implementation method for a TE01 dielectric resonator and coaxial metal resonator mixing cavity filter. According to a mixed structure which integrates the advantages, such as high Qvalue and stable temperature coefficient of TE01 dielectric resonators as well as relatively far distance between higher-order modes and main modes of coaxial metal resonators, the TE01 dielectric resonators and the coaxial metal resonators are arranged in a mutually crossed manner, the TE01 dielectric resonators are assembled on the side surface of a cavity body, and the space between each coaxial metal resonator and each TE01 dielectric resonator is changed by moving a tuning plate so as to realize the purpose of tuning the frequencies of the TE01 dielectric resonators. The TE01 mixing cavity filter device disclosed by the invention is applicable to metal resonant cavity devices, such as a metal resonant cavity filter, a duplexer and a combiner which can satisfy out-of-band rejection, but cannot realize insertion loss under a condition of limited volume, and can be applicable to devices, such as a TE01 dielectric resonant cavity filter, a duplexer and a combiner which can satisfy out-of-band rejection and insertion loss, but cannot meet a coupling coefficient required by larger relative bandwidth.

Description

technical field [0001] The present invention relates to the design field of microwave radio frequency passive devices such as filters, duplexers and combiners, in particular to the fields of TE01 dielectric and coaxial metal resonator hybrid cavity filters, duplexers and combiners, more specifically It relates to a device for improving the harmonic wave of a TE01 dielectric resonator filter and reducing the cost. Background technique [0002] In recent years, with the rapid development of communication, the requirements for cavity passive components are getting higher and higher, especially with the large-scale construction of 3G standard WCDMA, CDMA2000, and TD-SCDMA third-generation mobile communication systems, and the fourth-generation Mobile communication LTE will also be gradually commercialized. Due to the maximum utilization of spectrum resources and the increase of downlink transmission power, especially now that the number of base station co-location constructions ...

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Problems solved by technology

[0004] The intermediate TE01 dielectric resonator has the advantage of higher Q value. At the same time, the high-order mode of the TE01 dielectric resonator is relatively close to the main mode, and the production cost is high. If all TE01 dielectric resonators are used in the design, it will bring modern high-order A series of problems such as harmonic interference, high cost, narrow bandwidth, and complex coupling structure design

However, a band-pass TE01 dielectric cavity filter and a coaxial metal cavity band-pass filter are used to suppress modern high-order harmonics, but adding a coaxial metal cavity band-pass filter will increase the volume of the device and increase the insertion loss , which will increase the production cost

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