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Dielectric filter

A dielectric filter and cavity technology, which is applied in the field of radio frequency, can solve the problems that cannot meet the data transmission requirements of the fourth-generation mobile communication network, achieve good filtering effect, low loss, and improve the effect of Q value

Active Publication Date: 2015-05-27
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the filter market is mainly based on metal cavity filters, which cannot meet the data transmission requirements of the fourth-generation mobile communication network.

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 , shows a perspective view of Embodiment 1 of the dielectric filter of the present invention, the dielectric filter includes a cavity 10 , a resonator 1 , an input end 2 and an output end 3 . The cavity 10 is cylindrical, and the input end 2 and the output end 3 are arranged on the side wall of the cavity 10 oppositely. The output feed pin 31 in the body 10, the input feed pin 21 and the output feed pin 31 are all L-shaped, and the input feed pin 21 includes a horizontal section 212 vertically connected to the side wall of the cavity 10 and a vertical section vertically connected to the free end of the horizontal section 212 211 , the output feeder 31 includes a horizontal section 312 vertically connected to the side wall of the cavity 10 and a vertical section 311 vertically connected to the free end of the horizontal ...

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Abstract

The invention provides a dielectric filter comprising a cavity body, a harmonic oscillator arranged at the center in the cavity body as well as an input terminal and an output terminal which are arranged on the opposite side walls of the cavity body. The harmonic oscillator is provided with a plurality of first metal microstructures and a plurality of metal microstructures which are opposite to the input terminal and the output terminal respectively; and the first metal microstructures and the second metal microstructures are distributed along the axis direction respectively. The dielectric filter adopts the TM mode, and the Q value of the filter is improved through the arrangement of the metal microstructures in the harmonic oscillator, the frequency of transmission electromagnetic wave is effectively reduced, and meanwhile, the loss is low, and a good filtering effect is achieved.

Description

technical field [0001] The invention belongs to the radio frequency field, and in particular relates to a dielectric filter. Background technique [0002] A filter is a device that selects a radio frequency signal of a specific frequency in a mobile communication device. It is one of the core components of a mobile communication base station system and other wireless communication systems, and is used to filter out interference and clutter in the receiving or transmitting channel. At present, the filter market is mainly dominated by metal cavity filters, which cannot meet the data transmission requirements of the fourth-generation mobile communication network. With the rapid development of diversification, miniaturization, and high power of radio frequency and microwave systems, modern mobile base stations have higher and higher requirements for filter performance indicators. [0003] With the continuous improvement of the performance and stability of microwave dielectric c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/201H01P1/207
Inventor 刘若鹏徐冠雄刘京京徐国伟苏翠
Owner KUANG CHI INST OF ADVANCED TECH