Lowpass and Bandpass Filter Designs Based on DGS with Complementary Split Ring Resonators
Lowpass and Bandpass Filter Designs Based on DGS with Complementary Split Ring Resonators
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发表时间：
2012
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通讯作者：
G. E. Al-Omair;S. Mahmoud;A. Al-Zayed
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作者：
G. E. Al-Omair;S. Mahmoud;A. Al-Zayed
─我们提出了基于缺陷接地结构（DGS）的紧凑型低通滤波器（LPF）和带通滤波器（BPF）的新设计，使用两个互补的劈环谐振器（CSRR）蚀刻在地平面上。两个面积不等的csrr的几何形状针对具有锐利截止和宽阻带的LPF进行了优化。对于BPF的设计，在主传输线上串联一个间隙电容，设计两个或三个蚀刻csrr，以实现给定的带宽和宽抑制带。在SEMCAD-X软件上的仿真结果与电路模型以及预制低通和带通滤波器的测量结果进行了比较。索引术语─有缺陷的接地结构、微带电路、微波滤波器。
─ We present novel designs of compact lowpass filters (LPF) and bandpass filters (BPF) based on defected ground structures (DGS) using two complementary split ring resonators (CSRR) that are etched in the ground plane. The geometries of the two CSRRs, of unequal areas, are optimized for a LPF with sharp cutoff and wide stop band. For the design of the BPF, a gap capacitor is added in series with the main transmission line and the two or three etched CSRRs are designed to achieve a given bandwidth, and a wide rejection band. Simulation results on the SEMCAD-X software are compared with circuit models and measurements on fabricated lowpass and bandpass filters. Index Terms ─ Defected ground structures, microstrip circuit, microwave filters.