Double-passband filter with left-hand performance

A dual-pass band filter and performance technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of large size and dual-pass band filter without left-handed characteristics

Inactive Publication Date: 2010-09-15
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing dual-passband filters (or microstrip lines

Method used

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  • Double-passband filter with left-hand performance
  • Double-passband filter with left-hand performance
  • Double-passband filter with left-hand performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0016] Such as figure 2 As shown, the present invention has a double-pass band filter with left-hand performance, including a ground plate ground, a central transmission line, a hollow split resonant ring CSRR and a split ring resonator SRR, wherein the hollow split resonant ring CSRR is etched on the ground plate ground, and the ground plate A dielectric board is set on the ground, and the central transmission line is set on the dielectric board. The two ends of the central transmission line are respectively connected to the external signal input cable and the output cable. Two split ring resonators SRR are symmetrically arranged on both sides of the central transmission line, and a center of the central transmission line is etched. A gap, wherein a plurality of through holes are etched on the central transmission line on both sides of the gap to the ground plat...

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PUM

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Abstract

The invention discloses a double-passband filter with a left-hand performance, comprising a grounding plate, a central transmission line, a hollow-out split resonant ring and split-ring resonators, wherein, the hollow-out split resonant ring is etched on the grounding plate; the grounding plate is equipped with a medium plate; the central transmission line is arranged on the medium plate, two ends thereof are respectively connected with an external signal input cable and an external signal output cable, two sides thereof are symmetrically equipped with two split-ring resonators, and the central position thereof is etched with a slit; and the central transmission line at two sides of the slit is etched with a plurality of through holes on the grounding plate. The double-passband filter helps a signal passing the same have the left-hand performance and small structural physical dimensions.

Description

technical field [0001] The invention relates to a double-passband filter in the technical field of microwave communication signal transmission, in particular to a double-passband filter with left-handed performance. Background technique [0002] Filters are critical in separating and sorting signals in communication systems. Filters are basically two-port networks that adjust the frequency response of a communication system. In some applications, such as communication satellites and mobile communication equipment, it is critical to design filters that are small and lightweight. Most of the existing dual-passband filters (or microstrip lines) do not have left-handed characteristics and are relatively large in size. Contents of the invention [0003] The object of the present invention is to provide a double-passband filter with left-handed performance in view of the defects in the prior art, so that the passed signal has left-handed characteristics. At the same time, the...

Claims

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Application Information

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IPC IPC(8): H01P1/20
Inventor 张雅男
Owner NANJING UNIV OF INFORMATION SCI & TECH
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