A Differential Filter Based on Dual-mode Dielectric SMD Resonator

A technology for patch resonators and filters, applied in resonators, waveguide-type devices, circuits, etc., can solve problems such as unfavorable miniaturization of filters, and achieve the effect of compact structure and flexible design

Active Publication Date: 2019-12-13
ZHONGTIAN BROADBAND TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, the latter generally uses the TE mode as the main mode, and usually works in a single mode, which is not conducive to the miniaturization of the filter

Method used

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  • A Differential Filter Based on Dual-mode Dielectric SMD Resonator
  • A Differential Filter Based on Dual-mode Dielectric SMD Resonator
  • A Differential Filter Based on Dual-mode Dielectric SMD Resonator

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Embodiment Construction

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings show typical embodiments of the invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments, and are not i...

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Abstract

A differential filter based on a bi-mode dielectric patch resonator comprises a metal cavity, two differential excitation structures fixedly arranged on the side wall of the metal cavity, and a bi-mode dielectric patch resonator arranged inside the metal cavity; the bi-mode dielectric patch resonator is a square dielectric patch arranged on the surface of a low dielectric constant dielectric substrate with the grounded bottom; the dielectric substrate is directly arranged at the bottom wall of the metal cavity, and the two opposite angles of the dielectric patch are provided with gaps for separating a pair of perpendicularly-intersecting degenerated TM11 resonant modes. The filter is compact in structure, has the advantages of being low in profile and high in Q-unloaded, by setting parameters of the dielectric substrate and the dielectric patch resonator, the TM11 mode is adopted for replacing a TE11 mode as the main mode, the bi-mode coupling work is achieved, and a differential passband is built. Due to the fact that the TM mode is controlled by the parameters of the substrate, and the TE mode is basically not affected by the substrate, the TM mode is more flexible in design compared with the TE mode.

Description

Technical field [0001] The invention relates to the technical field of communication filtering, in particular to a differential filter based on a dual-mode dielectric patch resonator. Background technique [0002] Due to the high dielectric constant dielectric resonator has an unloaded quality factor (Q u ) High, large power capacity and high temperature stability, etc., have been widely used in current wireless communication systems. At present, many high-performance microwave components and circuits based on dielectric resonators have been designed and studied, such as multiplexers, oscillators, antennas, and filters. [0003] In the filter design, the structure of the dielectric resonator can be roughly divided into two forms: (1) an independent dielectric resonator placed in a metal cavity; (2) a dielectric resonator placed on a low dielectric constant substrate with a smaller height Device. The former is generally used to design high-performance single-ended / differential fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/207H01P7/10
CPCH01P1/207H01P7/105
Inventor 陈建新朱彦源李蕴力杨汶汶包志华
Owner ZHONGTIAN BROADBAND TECH
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