A Microwave Differential Filter Based on Dual-mode Dielectric Resonator
A dual-mode dielectric resonance and dielectric resonator technology, which can be applied to waveguide-type devices, circuits, electrical components, etc., can solve the problem of large volume of differential filters.
Active Publication Date: 2019-05-31
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 divided by a pair The feed probes on both sides are differentially excited. Due to the use of dual-mode dielectric resonators, the filter only needs a 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 with reference to the accompanying drawings and specific embodiments of the specification. The description is not intended to limit the technical solutions of the present application, and the embodiments of the present invention and the technical features in the embodiments may be combined with each other under the condition of no co...
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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 dual-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 extensively explored and studied. In the early designs, many differential filters used printed circuit board technology, low temperature co-fired ceramic technology and substrate integrated waveguide technology to realize resonators, but they have the disadvantage of low quality factor (Q), which limits their use in Some practical engineering applications. [0003] Dielectric resonators have been widely used in modern wireless communication systems due to their advantages of ...
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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