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A Multimode Hybrid Cavity Structure Applied in Filter

A filter and cavity technology, applied in the field of multi-mode hybrid cavity structure, can solve problems such as electromagnetic field coupling difficulties

Active Publication Date: 2021-07-06
HONGKONG FINGU DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the defects in the above-mentioned prior art, the purpose of the present invention is to solve the above-mentioned background technology deficiencies, and provide a multi-mode hybrid cavity structure applied in the filter, which can realize the small size of the cavity filter. Frequency reduction requirements, while ensuring that the electromagnetic field generated by the resonant rod is not bound in the resonant rod, which is difficult to couple and is very suitable for low-frequency fields

Method used

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] A multi-mode hybrid cavity structure applied to filters shown in the accompanying drawings of the present invention, the multi-mode hybrid cavity structure is arranged in the cavity A by a cavity A and two mutually perpendicular combined resonant rods Ba, Bb The double-mode planar cross resonant rod C in the middle position of the cavity A forms a degenerate dual mode on the X and Y axes or Y and Z axes or X and Z axes of the cavity A. The combined resonant rod B is composed of a resonant rod 2 and a dielectric gasket 3 Constitute the combined resonant rod B in the cavity A, the two ends of ...

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Abstract

The invention discloses a multi-mode hybrid cavity structure applied in a filter, which comprises a resonant rod, a dielectric spacer, a cavity and a cover plate, the cover plate is installed on the cavity body, and the cavity body There is a resonant cavity that is hollowed out inside, and the resonant rod is installed in the resonant cavity. or non-metallic surface metallized material, a dielectric gasket is provided between at least one end of the resonant rod and the inner wall of the cavity, one end of the dielectric gasket is connected to the end of the resonant rod, and the other One end is connected with the inner wall of the metal cavity. The invention is simple in structure, easy to install and use, and it avoids the problem that the electromagnetic field is bound in the dielectric resonator rod and difficult to couple by changing the dielectric resonator rod in the multimode cavity dielectric resonator into a metal resonator rod or a surface metallized resonator rod .

Description

technical field [0001] The invention relates to a multimode hybrid cavity structure applied in a filter, belongs to the technical field of passive antenna feed devices in the communication field, and in particular relates to a multimode hybrid cavity structure applied in a filter. Background technique [0002] With the rapid development of the fourth-generation mobile communication to the fifth-generation mobile communication, the requirements for high performance and miniaturization of communication equipment are increasing. The traditional cavity filter mostly adopts the single metal resonant rod method. Although this method is simple in structure, But only TEM single-mode resonance can be formed. When TEM multi-mode resonance is required in some occasions, it is necessary to arrange a resonant single cavity for each resonant rod, and a single cavity forms a resonance mode; this arrangement will lead to filter The whole machine is too big and the cost is too high. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20H01P7/06H01P7/10
CPCH01P1/2002H01P7/06H01P7/105
Inventor 孟庆南
Owner HONGKONG FINGU DEV CO LTD
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