Microwave differential filter based on double-module dielectric resonator
A dual-mode dielectric resonance and dielectric resonator technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of large differential filters
Active Publication Date: 2017-05-31
ZHONGTIAN BROADBAND TECH +1
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However, the volume of the designed differential filter is relatively large because the dielectric resonators used are all operating in single mode
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[0027] The resonator used in the differential filter of the present invention is equivalent to two identical rectangular dielectric resonators formed orthogonally. According to the inherent electromagnetic characteristics of the rectangular dielectric resonator, the main mode of each rectangular resonator can be located by a pair of The feeding probes on both sides are differentially excited. Due to the use of a dual-mode dielectric resonator, the filter only needs one metal cavity, which has the advantage of miniaturization.
[0028] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. To illustrate, rather than limit, the technical solutions ...
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The invention discloses a microwave differential filter based on a double-module dielectric resonator. The microwave differential filter based on the double-module dielectric resonator comprises a metal cavity, two groups of differential excitation structures and a double-module dielectric resonator with the cross-shaped section which are fixedly installed in the metal cavity, and two groups of microwave connectors installed on the outer wall of the metal cavity and correspondingly connected with two groups of the differential excitation structures. The double-module dielectric resonator is formed by the orthogonality of two same rectangular dielectric resonators. Each group of the differential excitation structure is the mirror image mutually and is installed opposite to two end parts of one equivalent rectangular dielectric resonator respectively. Preferentially, a pair of the relative corner formed at the orthogonality of two rectangular dielectric resonators is provided with two infinitesimal disturbance elements for orthogonal mode separation. The filter is capable of reducing the volume of the microwave differential filter based on the dielectric resonator, and has the advantage of miniaturized size. The problem in the prior art that the volume of the microwave differential filter based on the dielectric resonator is larger can be solved.
Description
technical field [0001] The invention relates to the technical field of radio frequency communication filtering, in particular to a microwave differential filter based on a double-mode dielectric resonator. Background technique [0002] Compared with single-ended circuits, differential circuits play an extremely important role in microwave circuits and communication systems due to their high immunity to noise and crosstalk. Adapting to this trend, many differential filters with good performance have been widely explored and studied. In the early designs, many differential filters used resonators realized by printed circuit board technology, low-temperature co-fired ceramic technology and substrate-integrated waveguide technology, but they had the disadvantage of low quality factor (Q), which limited their use in Some practical engineering applications. [0003] Dielectric resonators have been widely used in modern wireless communication systems due to their advantages of hi...
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IPC IPC(8): H01P1/207
CPCH01P1/207
Inventor 陈建新李姜詹扬秦伟施金唐慧包志华
Owner ZHONGTIAN BROADBAND TECH