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Impedance bandwidth improvement for microstrip‐fed slot antennas using short‐circuited termination
Author(s) -
Li ChingLieh,
Lin PeiYing,
Huang ChunKai
Publication year - 2005
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.20726
Subject(s) - microstrip , passband , slot antenna , bandwidth (computing) , return loss , microstrip antenna , microwave , electrical impedance , electronic engineering , electrical engineering , engineering , physics , computer science , telecommunications , antenna (radio) , band pass filter
In this paper, the impedance bandwidth of microstrip‐fed slot antennas is improved by using short‐circuited termination as compared to open‐circuited termination. The bandwidth improvements for simple slot, single‐folded slot, and double‐folded slot antennas, respectively, are demonstrated. The 10‐dB return loss bandwidth of 29% is attained for the double‐folded slot antenna fed by a short‐circuited microstrip line. The measured far‐field patterns are stable across the passband, which makes it a good candidate for UWB application. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 67–70, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20726