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Novel band elimination filter

A filter, a new type of technology, applied in the field of filters, can solve the problems of affecting filter performance, complex structure, high processing and design costs, etc., and achieve the effect of simple structure, low cost and reduced loss

Inactive Publication Date: 2017-05-31
王帅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the band-stop filter based on the cavity structure has a high Q value and low loss, its structure is complex, the processing and design costs are high, and the assembly and debugging errors of the filter will affect the performance of the filter

Method used

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Embodiment Construction

[0022] The following will be further described in conjunction with the accompanying drawings, not to limit the scope of the present invention.

[0023] see Figure 1 to Figure 6 shown, see Figure 1 to Figure 4 As shown, the present invention includes a dielectric substrate 3, a housing 1 and a connector 6. The dielectric substrate 3 is rectangular, and a main transmission line is arranged on the upper part of the dielectric substrate 3, and a main transmission line guide strip 2 is arranged on the main transmission line. The conduction strip 2 of the main transmission line is a metal conduction strip, and the conduction strip 2 of the main transmission line is a suspended microstrip line of fifty ohms.

[0024] A resonator 4 is provided at the bottom of the dielectric substrate 3, and the resonator 4 is a metal conduction band, and adjacent resonators 4 are separated by a quarter-wavelength interval. A metal layer 11, a mounting hole 9 and a metal via hole 10 are provided o...

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Abstract

The invention relates to a novel band elimination filter, which comprises a medium substrate, a shell and connectors. A main transmission line is arranged on the upper portion of the medium substrate, resonators are arranged at the bottom of the medium substrate, a main transmission line conduction band is arranged on the main transmission line, metal layers, mounting holes and metal through holes are arranged in the edges of long sides of the medium substrate, the shell consists of an upper portion and a lower portion, the medium substrate is arranged between the upper shell and the lower shell, the upper shell and the lower shell can be electrically connected with the metal layers so that grounding is realized, and the connectors are arranged in the centers of the two ends of the shell and connected with the main transmission line. The main transmission line and the resonators of the filter can be arranged on two surfaces of the medium substrate respectively, and parallel coupling and capacitive coupling can be realized among the resonators and the main transmission line, so that wide stop bands can be realized, and the bandwidth of the band elimination filter can be designed freely.

Description

technical field [0001] The invention relates to a filter, in particular to a novel filter rejection device. Background technique [0002] Due to the development of wireless communication systems, the microwave frequency band is becoming more and more crowded, the division of frequency band resources is becoming more and more refined, and the requirements for suppression of noise, interference, and spurs are also increasing. Band-stop filters are used in communication systems. Filter out unwanted clutter and noise signals to improve system performance. In addition, the band-stop filter is used for the spurious test of the system to suppress the carrier signal and measure the conducted spurious in other frequency bands. At present, the band-stop filter mainly has a microstrip form and a cavity structure form. In terms of implementation form, due to the low Q value of the microstrip resonator, the passband edge loss of the band-stop filter based on the microstrip line is rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
Inventor 王帅
Owner 王帅