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Critical coupling of a planar inverted F‐antenna using a ferrite sheet
Author(s) -
Kim Hojeong,
Choi Hyengcheul,
Jeon Sinhyung,
Kim Hyeongdong
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.24950
Subject(s) - planar , microwave , loop antenna , ground plane , electrical engineering , inductance , ferrite (magnet) , coaxial antenna , electronic engineering , materials science , acoustics , engineering , microstrip antenna , voltage , antenna (radio) , physics , telecommunications , computer science , computer graphics (images)
In this letter, a novel method that can achieve critical coupling in a planar inverted F‐antenna of high height is proposed. Theproposed antenna can achieve critical coupling by attachment of a ferrite sheet without changing the size of the antenna or ground plane. A ferrite sheet is used to increase shunt inductance of the shorting pin loop. The proposed antenna is modeled by an equivalent circuit based on transmission line modeling. It has a very wide bandwidth of 16% for a voltage standing wave ratios <2. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 400–403, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24950