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Compact dual‐frequency PIFA with a chip‐inductor‐loaded rectangular spiral strip
Author(s) -
Yeh ShihHuang,
Wong KinLu
Publication year - 2002
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.10333
Subject(s) - inductance , planar , spiral (railway) , electrical engineering , microwave , inductor , chip , engineering , antenna (radio) , dual (grammatical number) , electronic engineering , acoustics , physics , telecommunications , computer science , mechanical engineering , voltage , art , computer graphics (images) , literature
By loading a chip inductor of suitable inductance (about 12 nH or less) to a planar inverted‐F antenna (PIFA) with a shorted rectangular spiral strip, the frequency ratio of the antenna's first two resonant frequencies can be controlled, which makes dual‐frequency operation with a desired frequency ratio easy to achieve. In addition, with the use of a shorted rectangular spiral strip, the proposed PIFA, has compact dimensions for a fixed dual‐frequency operation. Design examples of the proposed PIFA with a compact size of 7.2 × 10 × 26 mm 3 to achieve dual‐frequency operation at about 900 and 1800 MHz are presented. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 394–397, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10333
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