Microwave low waveband TM010 module high selectivity cavity dielectric filter

A dielectric filter and microwave dielectric material technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of low loss and high selectivity, and improve temperature stability index, selectivity index, Effect of Improving Insertion Loss Specifications

Active Publication Date: 2009-05-20
庄昆杰
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to overcome the problem that existing filters cannot balance low loss and high selectivity, and provide a microwave low-band TM with a novel structure. 010 Mode High Selectivity Cavity Dielectric Filter

Method used

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  • Microwave low waveband TM010 module high selectivity cavity dielectric filter
  • Microwave low waveband TM010 module high selectivity cavity dielectric filter
  • Microwave low waveband TM010 module high selectivity cavity dielectric filter

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Embodiment Construction

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and examples. However, the invention is not limited to the examples given.

[0014] like figure 1 , figure 2 , image 3 As shown, the microwave low-band TM of the present invention 010 High modulus selective cavity dielectric filter, including a metal body 1, a cover plate 2 (which can be divided into an upper cover plate 21 and a lower cover plate 22), a resonant frequency adjustment screw 31, an intercavity coupling strength adjustment screw 41, and an input The output interface 51, 52 has at least two cylindrical cavity resonators 3 in the main body 1 (the number of cavity resonators 3 in this embodiment is 6, and they are equally divided into 2 rows parallel to each other. Theoretically, the number of cavity resonators 3 The minimum number is 2 to realize the function), there is a cylindrical microwave dielectric material 8 in the cavity resonator 3, and ...

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Abstract

The invention discloses a micro-wave low-band TM010 mode high-selectivity cavity dielectric filter, which is at least provided with two cylindrical cavity resonators, wherein cylindrical micro-wave dielectric materials are arranged in the cavity resonators and are provided with resonant frequency regulation holes, the cylindrical cavity resonators are numbered according to the sequence, a centralized coupling window is arranged between the two cavity resonators with adjacent serial numbers, resonant frequency adjustment screws and an inter-cavity coupling strength adjustment screw extend into the resonant frequency regulation holes of the cylindrical micro-wave dielectric materials of the cavity resonators and the centralized coupling window respectively, the micro-wave dielectric materials in the head and tail cavity resonators are also provided with probe holes, and probes of input / output interfaces are inserted into the corresponding probe holes respectively. The resonance mode of the metal cylindrical resonators of the filter is a TM010 mode, the electromagnetic field has a simple structure as well as axially symmetrical and even distribution, and the filter has high quality factor, small loss, large power capacity, and small volume, thereby satisfying the need of the development of communication products toward miniaturized and high integration directions.

Description

technical field [0001] The invention relates to a microwave low-band TM 010 High-mode selectivity cavity dielectric filter is suitable for filtering devices for radio frequency signal transmission in the field of radio communication. Background technique [0002] In various modern wireless communication devices, filters, as a commonly used, necessary and widely used component, play an increasingly important role in wireless information transmission technology. At present, microwave filters used in various wireless communication frequency bands are generally realized by coaxial transmission. It is usually composed of a resonant cavity, an inner conductor and corresponding tuning screws, etc., while performance indicators require low loss and high power. , the volume of the resonant cavity will increase correspondingly, which will not only consume a large amount of raw materials, but also put forward higher requirements for its production and processing technology. Cost requ...

Claims

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Application Information

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IPC IPC(8): H01P1/207H01P1/208
Inventor 郑德典吕斌
Owner 庄昆杰
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