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A frequency‐reconfigurable antenna for internal mobile handset applications
Author(s) -
Sung Youngje
Publication year - 2014
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.28361
Subject(s) - handset , gsm , umts frequency bands , reconfigurable antenna , folded inverted conformal antenna , engineering , electrical engineering , ground plane , antenna (radio) , pin diode , microwave , planar , electronic engineering , radiation pattern , coaxial antenna , telecommunications , computer science , diode , computer graphics (images)
In this article, a frequency‐reconfigurable planar antenna for mobile handset applications that covers the GSM, DCS, PCS, and UMTS bands is presented and studied. The antenna consists of a single continuous loop element with three connections to a printed circuit board through a feeding point and two shorting points. Additionally, a protruded ground plane is printed on the circuit board near the radiating element. Depending on the switching states of the PIN diode, the reconfigurable antenna operates in a planar inverted‐F antenna (PIFA) mode or loop mode. It is found from the measured results that the PIFA mode covers the GSM band, and the loop mode covers the DCS/PCS/UMTS bands. The occupied antenna volume of the proposed design is 27.8 × 10 × 1.6 mm 3 , which is quite compact as compared to internal mobile handset antennas that have been reported recently. Good radiation pattern characteristics with reasonable gains have been observed over the operating bandwidths. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1366–1371, 2014