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Design of planar bandpass filters from tapered slot resonators
Author(s) -
Abbosh Amin,
Bialkowski Marek,
Thiel David
Publication year - 2010
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.25118
Subject(s) - resonator , stopband , tapering , band pass filter , coplanar waveguide , planar , microwave , stub (electronics) , passband , materials science , insertion loss , acoustics , optoelectronics , optics , engineering , electronic engineering , physics , computer science , telecommunications , computer graphics (images)
A compact planar bandpass filter is designed using a tapered slot resonator, which is formed using two tapered slot antennas connected in a face‐to‐face configuration. The tapering profile and dimensions of the resonator control the characteristics of the filter. The success of the method is demonstrated via full wave electromagnetic simulations and measurements. Passbands of 30–50% centred at about 6 GHz with an insertion loss of less than 1 dB and a peak‐to‐peak group delay of less than 0.5 ns are achieved in two filters having different tapering profiles and fabricated on RT6010 substrate with an overall dimension of 25 mm × 30 mm. The use of an open‐ended series stub within the coplanar waveguide feeder of the filters extends their high stopband beyond 15 GHz. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1190–1194, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25118