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Dielectric filter

A dielectric filter and dielectric technology, which is applied in the field of communication, can solve problems such as damage and poor mechanical strength, and achieve the effects of enhancing near-end suppression, improving mechanical strength, and increasing out-of-band transmission zero points

Pending Publication Date: 2021-12-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The dielectric filter coupled through the window has poor mechanical strength and is easy to be damaged during use

Method used

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Embodiment Construction

[0017] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] In the following description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only to facilitate description of the present invention and has no specific meaning by itself. Therefore, 'module', 'part' or 'unit' may be used in combination.

[0019] As mentioned in the background art above, the dielectric filter coupled through the window has poor mechanical strength and is easily damaged during use. figure 1 It is a window-coupled dielectric filter in the prior art. see figure 1 , the dielectric filter includes two dielectric filter resonant cavity main bodies 10, and the coupling of the two dielectric filter resonant cavity main bodies 10 is realized through a windowed coupling structure 20, and the windowed coupling is also called magnetic coupling. It can be seen that the format...

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Abstract

The invention discloses a dielectric filter. The dielectric filter comprises a plurality of dielectric filter resonant cavity main bodies which are arranged at intervals and at least one capacitive coupling structure, wherein each dielectric filter resonant cavity main body is provided with a coupling port; each capacitive coupling structure is provided with two coupling ends; and the coupling ports of the two dielectric filter resonant cavity main bodies are coupled with the coupling end of the same capacitance coupling structure. According to the technical scheme, the dielectric filter with good mechanical performance can be realized. The technical scheme aims to realize a dielectric filter which is good in mechanical performance.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a dielectric filter. Background technique [0002] In mobile communication, in order to ensure the normal operation of the base station, filters with various performances are required inside the base station. The function of the filter is to pass electromagnetic wave signals in a specific frequency range and suppress electromagnetic wave signals outside a specific frequency range. [0003] Dielectric filters are widely used in filters due to their advantages of high quality factor, small insertion loss, high power and convenient miniaturization. At present, the commonly used coupling method between two all-dielectric filters is window coupling. The larger the window, the greater the coupling strength. The dielectric filter coupled through the window has poor mechanical strength and is easy to be damaged during use. Contents of the invention [0004] The main purpose of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20H01P1/208
CPCH01P1/2002H01P1/208
Inventor 龚红伟卜伟成勇杜渊武增强
Owner ZTE CORP
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