Multi-frequency multiplication double stop-band filter

A filter and double-stop band technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of single stop-band filter, lack of two stop-band filter characteristics, and difficulty in realization

Inactive Publication Date: 2016-08-03
DFINE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] If a conventional stopband filter needs to have two stopbands in the same passband, two filters are required to achieve it, and it is also easy to appear that the multi-octave harmonics of the first stopband will appear in the other stopband filter In the band, it is difficult to realize the multi-frequency double stop-band filter if the conventional method is used. Some existing conventional filters mainly have the following characteristics:
[0003] 1. Some stop-band filters on the market are a single stop-band filter, and there is no characteristic of two stop-band filters in the same passband
[0004] 2. Conventional stop-band filters have a relatively narrow passband bandwidth, and it is difficult to realize multi-multiplier ultra-wideband stop-band filters

Method used

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Embodiment Construction

[0028] There are coupling rod 2, polytetrafluoroethylene medium 3, microstrip line 4, LC filter 5, and resonator 6 in the cavity 1. The coupling rod 2 is connected with four parallel resonators 6 to form the first stop band filter. The resonator 6 is a normalized frequency generator, which plays the role of generating frequency signals in the cavity 1, and the coupling rod 2 is three normalized couplers in series, and the coupling rod passes through the microstrip line 4 and the second stopband filter The second stop band filter is composed of three series LC resonators and four parallel LC resonators 5, the coupling rod 2 outputs the frequency signal to the microstrip line 4, and the polytetrafluoroethylene medium 3 fixes the coupling rod, The stopband bandwidth is realized by adjusting the distance between the coupling rod 2 and the resonator 6, the frequency can be adjusted by using the resonator 6, and finally the output of the first stopband filter is transmitted to the se...

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Abstract

The invention provides a multi-frequency multiplication double stop-band filter, solving the problem that the passband bandwidth of a normal stop-band filter is relatively narrow and a multi-frequency multiplication ultra wide band stop-band filter multi frequency multiplication is difficult to realize. The multi-frequency multiplication double stop-band filter is characterized in that a coupling rod (2) is connected with a plurality of parallel resonators (6) to form a first stop-band filter; the resonators (6) are normalized frequency generators, and are used for generating frequency signals in a cavity (1); the coupling rod (2) is a plurality of serial normalized couplers; the coupling rod (2) is connected with a second stop-band filter through a microstrip line (4); the second stop-band filter is formed by a plurality of serial and parallel LC resonators (5); and the output of the first stop-band filter is transmitted to the LC resonators (5) of the second stop-band filter again through the microstrip line (4).

Description

Technical field: [0001] The present invention relates to stopband filters. Background technique: [0002] If a conventional stopband filter needs to have two stopbands in the same passband, two filters are required to achieve it, and it is also easy to appear that the multi-octave harmonics of the first stopband will appear in the other stopband filter In the band, it is difficult to realize the multi-frequency double stop-band filter if the conventional method is used. Some existing conventional filters mainly have the following characteristics: [0003] 1. Some stop-band filters on the market are a single stop-band filter, and there is no characteristic of two stop-band filters in the same passband. [0004] 2. Conventional stop-band filters have a relatively narrow passband bandwidth, and it is difficult to realize multi-multiplier ultra-wideband stop-band filters. Invention content: [0005] The object of the present invention is to provide a multi-octave double stop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
CPCH01P1/203
Inventor 李承泽
Owner DFINE TECH
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