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Ultra wide band rejection filter based on loading of multiple step impedance resonators

A step impedance and resonator technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of poor comprehensive performance and complex structure, and achieve the effect of simple and reliable design, small size and low cost

Active Publication Date: 2014-10-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current research on broadband band-stop filters, most of the stop-band widths are less than 120%, or the structure is relatively complex, or the overall performance is not good enough.

Method used

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  • Ultra wide band rejection filter based on loading of multiple step impedance resonators
  • Ultra wide band rejection filter based on loading of multiple step impedance resonators

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Embodiment

[0018] Such as figure 1 As shown, a kind of ultra-wideband band-stop filter based on multi-step impedance resonator loading includes a double-sided copper-clad microstrip board 1, which is printed on the same side of the double-sided copper-clad microstrip board for Input feeder 2 for feeding electromagnetic wave signals, output feeder 8 for feeding out electromagnetic wave signals, uniform impedance resonator 3, first step impedance resonator 5, second step impedance resonator 7, first high impedance Connecting line 4 and the second high-impedance connecting line 6, wherein, one end of the uniform impedance resonator 3 is respectively connected to the input feeder 2 and one end of the first high-impedance connecting line 4, and the other end is open circuited, and the first step The thinner end of the impedance resonator 5 microstrip line is respectively connected to the other end of the first high-impedance connection line 4 and one end of the second high-impedance connectio...

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Abstract

The invention discloses an ultra wide band rejection filter based on loading of multiple step impedance resonators. The ultra wide band rejection filter comprises a double-faced copper-clad microstrip board. One end of a uniformity impedance resonator is connected with one end of an input end feeder line and one end of a first high impedance connecting line respectively, and the other end of the uniformity impedance resonator is open. The thin end of a microstrip line of the first step impedance resonator is connected with the other end of the first high impedance connecting line and one end of a second high impedance connecting line respectively, and the wide end of the microstrip line is open. The thin end of a microstrip line of the second step impedance resonator is connected with the other end of the second high impedance connecting line and an output end feeder line, and the wide end of the microstrip line is open. According to the ultra wide band rejection filter based on loading of the multiple step impedance resonators, the characteristic impedance of the uniformity impedance resonator and the two step impedance resonators is adjusted, so that the stop band range of the band rejection filter is greatly expanded.

Description

technical field [0001] The invention relates to the field of microwave engineering, in particular to an ultra-wideband band-stop filter based on multi-step impedance resonator loading. Background technique [0002] Nowadays, 3G technology is getting more and more popular in the whole country, and the new generation of wireless communication system 4G has also begun to develop, and the application of other wireless communication systems in various formats marks that wireless technology will usher in another boom. peak period of development. However, with the vigorous development of the wireless information industry in recent years, microwave spectrum resources are becoming more and more scarce, the frequency bands are more and more finely divided, and the utilization rate is getting higher and higher. In order to adapt to reasonable spectrum applications and improve the performance of wireless communication systems, The band-stop filter has become one of the important compon...

Claims

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Application Information

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IPC IPC(8): H01P1/203
Inventor 陈付昌邱捷铭陈健锋郭富祥
Owner SOUTH CHINA UNIV OF TECH
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