Abstract
Abstract An extended loop antenna, to be continued BLA(Branch Loop Antenna) in the previous volume, for the mobile handset is designed in this paper. It's introduced an ELA(Extended Loop Antenna) that is added extended loops to rectangular loop, and verified antenna performances for applying to mobile handset. Extended loops are located upside, left and right side of rectangular loop, and low resonance is obtained by the length of line. Multiple resonances are established by the extended loops, and obtained the desired service bands by the connection points and lengths. By the implementation and measurement for the multiband ELA, it's showed -3.0～-1.46dBi average gains with 50.15～71.41% efficiencies at CDMA/GSM frequency band, and –8.28～-1.7dBi average gains with 14.87～67.68% efficiencies at DCS/USPCS/ WCDMA frequency band.Key words : Extended loop, ELA, Mobile handset, Internal antenna† 본 연구는 순천향대학교 학술연구비의 일부 지원으로 수행하였음 * 주저자 : 순천향대학교 정보통신공학과 교수 ** 교신저자 : 배재대학교 정보통신공학과 교수† 논문접수일 : 2013년 1월 31일† 논문심사일 : 2013년 3월 5일† 게재확정일 : 2013년 3월 12일
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