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Double-passband filter with left-hand performance

A dual-passband filter and performance technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of passband and stopband, etc., and achieve the effect of increasing bandwidth, increasing passband width, and reducing size

Inactive Publication Date: 2015-04-15
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a dual-passband filter with left-handed performance in view of the defects in the prior art, so that the bandwidth of the dual-passband filter is increased while solving the problem of the stopband in the passband

Method used

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

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0025] The structure of the present invention is as figure 2 , image 3 , Figure 4 As shown, it includes a ground plane, a central transmission line, a complementary split resonant ring and a split resonant ring, and a dielectric plate with a dielectric constant of ε=2.65 is filled between the central transmission line and the ground plane, and the complementary split resonant ring is etched on the ground plane , the central transmission line is set on the dielectric board, and the two ends of the central transmission line are respectively connected to external signal input cables and output cables. Two split resonant rings are arranged symmetrically on both sides of the central transmission line, and the longitudinal symmetry axes of the two split resonant rings are in line with the longitudinal axis of the central transmission line. The symmetry axes coincid...

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Abstract

The invention discloses a double-passband filter with left-hand performance. The double-passband filter comprises an earth plate, a central transmission line, a complementary split-ring resonator (CSRR) and split-ring resonators (SRR), wherein the complementary split-ring resonator is etched on the earth plate; a dielectric slab is arranged on the earth plate; the central transmission line is arranged on the dielectric slab; the two ends of the central transmission line are respectively connected with external signal input and output cables; two split-ring resonators are symmetrically arranged on the two sides of the central transmission line; a raised strip-shaped gap is etched in the central position of the central transmission line; and a plurality of through holes are etched on the central transmission line on the two sides of the gap and connected with the earth plate. The double-passband filter can enable the passing signals to have left-hand performance, increases the bandwidth and is reduced in physical structural 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] State Intellectual Property Office of the People's Republic of China, invention patent application number: 201010156154.1, application date: April 23, 2010, invention name "double passband filter with left-handed performance". [0003] The invention discloses a dual-pass band filter, including a floor, a central transmission line, a hollow split resonant ring (CSRR) and a split ring resonator (SRR), wherein the hollow split resonant ring is etched on a ground plate, and a dielectric is set on the ground plate plate, the central transmission line is set on the dielectric plate, 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 are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
Inventor 张雅男徐飞顾斌丁留贯王俊峰
Owner NANJING UNIV OF INFORMATION SCI & TECH
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