Performance optimization of microwave filters using photonic band GAP (PBG) structures

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Conference Proceeding
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), 2004, 4 pp. 3557 - 3560
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The performance optimization of microwave low pass and bandpass filters using photonic band gap (PBG) structures was discussed. The low pass filters used periodic defective ground structures while bandpass filter used a stepped impedance CPW ring resonator and EBG center conductor. In order to improve the spurious passband performance, periodic circular EBG structures were added to the center conductors of the CPW transmission line. The characteristics of the dual mode bandpass filter were improved by optimizing the dimensions of the resonator and the EBG structure.
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