期刊
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
卷 48, 期 5, 页码 846-848出版社
JOHN WILEY & SONS INC
DOI: 10.1002/mop.21494
关键词
bandstop filters; left-handed media; periodic structure; rectangular waveguides; split-ring resonators
A novel type of rectangular waveguide bandstop filter is presented. Incorporating a dielectric slab patterned with single split-ring resonators (SRRs), the electromagnetic properties of the structures are modified to allow propagation of backward waves in the rectangular waveguide. Filters are created through integration of SRRs, wireline, and additional metal strips as a loading for the propagation media. Using the printed circuit board (PCB) technique, SRRs, wireline, and metal strips are etched on a dielectric substrate and the slab is then inserted in the central plane of the metallic waveguide. A three-unit cell SRR-loaded waveguide is investigated against a three-unit cell LHM waveguide configuration. A three-unit LHM rectangular waveguide bandstop filter is designed and analyzed in order to performance wide stopband performance. The simulated results are presented for a WG-18 waveguide LHM rectangular waveguide bandstop filters are compact, low, cost, and suitable for mass production. (c) 2006 Wiley Periodicals, Inc.
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