New Method for Transformation of Microstrip Lowpass Filter to Compact Bandpass Filter Using Defected Ground Structure(DGS) Coupled Resonators
New Method for Transformation of Microstrip Lowpass Filter to Compact Bandpass Filter Using Defected Ground Structure(DGS) Coupled Resonators
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利用缺陷接地结构（DGS）耦合谐振器将微带低通滤波器改造为紧凑带通滤波器的新方法
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
A. Omar
中科院分区：
文献类型：
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作者：
A. Boutejdar;A. Elsherbiny;A. Omar
本文介绍了Boutejdar(2005)在已知切比雪夫低通滤波器的基础上，借助于多层变换方法发展的带通滤波器。Boutejdar(2005)提出了一种新型的紧凑型微带带通滤波器，它的底层是三个耦合的箭头槽，顶层是一条不连续的500兆微带传输线。两条微带线通过J导纳逆变器耦合。如果改变带隙的宽度，中心频率会在一定的频率范围内向左或向右移动，很容易实现可调的带通滤波器。制作了三极切比雪夫带通滤波器，并在7.25 GHz下进行了测试
In this letter, bandpass filter development with the assistance of the multi-layer transformation method, on the basis of the known Chebyschev-lowpass filter, is presented Boutejdar (2005). A new compact microstrip bandpass filter using three coupled arrowhead-slots in bottom-layer and a discontinuous 50Omega-microstrip transmission line in top-layer is proposed Boutejdar (2005). Both microstrip lines are coupled by means of a J-immitance inverter. If the width of the gap is changed, the center frequency would shift to the left or to right within a certain frequency range, and we can easily realize a tunable BPF. Three-pole-Chebyschev bandpass filter is fabricated, and tested at 7.25GHz