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Development of UWB bandpass filter with reconfigurable notches to suppress IEEE 802.11 a/b services
Author(s) -
Thirumalaivasan K.,
Nakkeeran R.
Publication year - 2012
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.27065
Subject(s) - band pass filter , microwave , microstrip , electronic engineering , bandwidth (computing) , filter (signal processing) , wireless , electrical engineering , engineering , resonator , control reconfiguration , telecommunications , embedded system
This letter presents a developed ultrawideband bandpass filter with reconfigurable notches to suppress the interference from wireless local area network services.The filter with discrete tuning provision is built in microstrip line that consists of ring resonator, interdigital coupling, and embedded open stubs (EOS). The reconfiguration is realized using a pair of fast switching diodes that are placed between EOS and strip line. The filter provides an excellent wide bandwidth (from 1.8 to 7.8 GHz) and rejection performance of −41 dB at 2.6 GHz and −24 dB at 5.3 GHz. The total size of the developed filter with the above features is 39.2 × 6 mm 2 . © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2423–2426, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27065