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Studies on ultrawideband filters using stub‐loaded circular and triangular resonators
Author(s) -
Gupta Ravi Dutt,
Abegaonkar Mahesh P.,
Basu Ananjan,
Koul Shiban K.
Publication year - 2008
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.23834
Subject(s) - resonator , passband , stub (electronics) , capacitive sensing , band pass filter , microwave , materials science , split ring resonator , optoelectronics , acoustics , electronic engineering , engineering , electrical engineering , optics , physics , telecommunications
Compact UWB bandpass filters using stub‐loaded ring and triangular resonators fed with capacitive‐ended interdigital coupled lines are proposed. The proposed structures are fed with capacitive‐ended interdigital coupled lines. The measured insertion loss for ring resonator filter is 1.0 dB and that for triangular resonator is 2.0 dB with corresponding group delays of 0.6 and 0.3 ns, respectively. These filters show sharp transitions at the edges of the UWB passband and improved out‐of‐band performance. The simulated and measured results are in good agreement and satisfy the FCC mask for indoor applications. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2917–2922, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23834