Suspended mictrostrip filter and duplexer and method for designing and debugging filter

A microstrip line filter and filter technology, which is applied in waveguide-type devices, radio relay systems, diversity/multi-antenna systems, etc., can solve problems such as high machining accuracy requirements, long manufacturing cycles, and poor mass production consistency. , to achieve the effect of high production yield, shortened supply cycle, and no need for debugging

Inactive Publication Date: 2006-09-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a filter adopting a suspended microstrip line structure. The filter of this structure not only solves the problems of high machining precision, long manufacturing cycle, and poor batch production consistency, but also It also retains the low loss characteristics of the air transmission medium

Method used

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  • Suspended mictrostrip filter and duplexer and method for designing and debugging filter
  • Suspended mictrostrip filter and duplexer and method for designing and debugging filter
  • Suspended mictrostrip filter and duplexer and method for designing and debugging filter

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Embodiment Construction

[0065] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0066] see figure 1 figure 2 image 3 , the suspended microstrip line filter of the present invention, its basic structure comprises: a cavity formed by metal shell 1, a PCB double-sided board 20 is arranged in the described cavity, PCB double-sided board is fixed on the side wall of metal shell, And there is a certain air height h between the PCB double-sided board and the upper and lower inner walls of the metal shell; the front side of the PCB double-sided board is etched with a ten-byte cascaded transmission line 30 of a predetermined shape, and the ten-byte cascaded transmission line 30 consists of more than one section Such as figure 2 The ten-byte units shown are cascaded, and each level of ten-byte units is composed of ten-byte units 33 of predetermined structural size, open lines 32 and transmission lines 31, and each ten-byte unit forms a re...

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Abstract

This invention discloses a suspending strip line filter and duplexer and filter's design and adjusting method. The filter includes a cavity formed by metal hull, the inner of the cavity has a PCB double-faced board which fixed at the side wall of the metal hull, between the up and down inner wall there has a certain air height; one side of PCB double-faced board etches cross nodel line transmission line with destined type. The frequency deviation index of the filter and duplexer is decided by the PCB double-faced board etches cross nodel line transmission line graph's processing precision, so it is easy to control and it has high disposal quality.

Description

technical field [0001] The present invention relates to a radio frequency device used in the technical field of communication, in particular to a filter using a suspended microstrip line structure, and a duplexer composed of such a filter; the present invention also relates to a design method of the filter and quick debugging methods. Background technique [0002] With the rapid development of wireless communication technology, communication devices of various frequency bands and standards are emerging and put into use. In order to avoid mutual interference between various communication system signals, including the transmission and reception between the own systems, it is necessary to use radio frequency filters for filtering. Especially on wireless base stations, in order to receive and transmit signals on the same antenna, a duplexer is required. [0003] The filter and duplexer in the wireless base station system will not use the filter of the commonly used microstrip ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H01P1/20H04B7/02H04B7/14
Inventor 厉进军杨瑞泉
Owner HUAWEI TECH CO LTD
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