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One-cavity three-mode filter

A filter and one-cavity technology, applied in waveguide devices, electrical components, circuits, etc., can solve problems such as waste of resources, and achieve cost savings, low insertion loss, and convenience

Inactive Publication Date: 2015-02-11
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current technology generally uses one of the mode resonators, which can be said to be a waste of resources

Method used

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  • One-cavity three-mode filter
  • One-cavity three-mode filter
  • One-cavity three-mode filter

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Embodiment Construction

[0027] Such as figure 1 As shown, a cavity three-mode filter is characterized in that: it at least includes a cubic rectangular waveguide resonant cavity 3, and there are three modes of TE101, TE011, and TE110 in the cubic rectangular waveguide resonant cavity 3, and the resonant frequencies of the three modes are equal. The cavity of the cubic rectangular waveguide resonant cavity 3 is filled with a non-conductive dielectric material, six sides are conductive surfaces, and the side length is half the square root of the wavelength when the center frequency is in the dielectric material.

[0028] The cubic rectangular waveguide resonator 3 includes a coupling window 2, through the coupling window 2, the cubic rectangular waveguide resonator 3 and the waveguide 1 are coupled, the external signal energy is input through the waveguide 1, and the waveguide 1 passes through the coupling window 2 in the cubic rectangular waveguide resonator. 3. Any one of the main modes TE101, TE011 ...

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Abstract

The invention relates to the technical field of microwave filters or duplexers, in particular to a one-cavity three-mode filter based on the one-cavity three-mode technology. The one-cavity three-mode filter is characterized by at least comprising a cubic rectangular waveguide resonant cavity, three modes of TE101, TE011 and TE110 are arranged in the cubic rectangular waveguide resonant cavity and have the same resonance frequency, a non-conductive medium material is filled in the chamber of the cubic rectangular waveguide resonant cavity with six conductive surfaces, and the side length is square root of one half of the wavelength when the mid frequency is in the medium material. The one-cavity three-mode filter has the advantages of small size and low manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of microwave filters or duplexers. Especially the one-cavity three-mode filter based on one-cavity three-mode technology. technical background [0002] Multimode technology has been widely used in the design of microwave components. The electromagnetic field distribution in a microwave transmission line can have multiple modes, each of which can be used to implement a separate resonator. Due to the orthogonal independence of the modes, there exist multiple independent resonators in a physical cavity. The current technology generally uses one of the mode resonators, which can be said to be a waste of resources. Multi-mode technology is to enable the coupling of resonators independent of each mode. A physical cavity with n-mode resonators is equivalent to a physical cavity with n single-mode resonators. Contents of the invention [0003] The invention provides a one-cavity three-mode filter with small v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20H01P1/207
Inventor 詹劲松陈晓龙王家礼
Owner XIDIAN UNIV
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