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A compacted CMOS K‐band bandpass filter using meandering thin film microstrip and UC‐PBG structures
Author(s) -
Lin Shuiyang,
Yang Liwu,
Sun Xiaowei
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24180
Subject(s) - band pass filter , microstrip , cmos , materials science , insertion loss , optoelectronics , center frequency , microwave , filter (signal processing) , electrical engineering , electronic engineering , engineering , telecommunications
A compacted CMOS K‐band bandpass filter incorporating meandering thin film microstrip and defective uniplanar compact photonic bandgap (UC‐PBG) slow‐wave structures for size reduction are presented. Benefited from the multilayer metal technology of the standard 0.18‐μm CMOS process, meandering thin film microstrip and broadside‐coupled structures with large coupling degree are properly constructed to realize bandpass filters with small insertion loss. The slow‐wave effect of UC‐PBG structure is investigated and a center frequency drop of 14% is achieved by the use of UC‐PBG ground. A 3.6‐dB loss 18‐GHz filter with two transmission poles has been designed and implemented in standard 0.18‐μm CMOS technology and only with an area of 0.34 mm 2 . © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 871–874, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24180