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标题：Design of High Quality Factor and Harmonic Reduced Bandpass Filter Using Coupled Resonators and Defected Ground Structures
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作者：Tamasi Moyra ; Susanta Kumar Parui ; Santanu Das 等
期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2012
卷号：1
期号：6
页码：185-188
出版社：International Journal of Soft Computing & Engineering
摘要：Design of good quality factor and high selective Band pass filter (BPF) is an emerging challenge of microwave engineers in modern RF, microwave and millimeter wave communication systems. Front end of the receiver in a communication system demands high performance BPF to select the required signal from the unwanted adjacent signals with improved selectivity. In this paper one end coupled Band pass filter with centre frequency 2GHz and 30% Fractional Bandwidth (FBW) at -20 dB has been designed with 4  rectangular split ring coupled resonators forming with  50 conventional Microstrip transmission line. This designed BPF has been simulated with the help of MoM besed IE3D electromagnetic simulation software. The proposed BPF provides first unwanted harmonic or spurious nearer to the twice of its passband centre frequency and some other higher harmonics at different higher frequencies. Therefore, in this paper attention also has been given towards the suppression of harmonics with the help of Defected Ground Structures (DGS) in addition with the proposed coupled microstrip BPF. Finally, one novel BPF has been designed for Satellite, GPS and Bluetooth applications of modern wireless communication systems.
关键词：microstrip; coupled resonator; defected;ground structure; elliptical; bandpass filter; Q-factor;selectivity.