A Multi-arm Coupled-fed Monopole Antenna for WWAN Mobile Systems
This paper proposes a printed monopole antenna,which is fabricated on a 0.8mm thick FR-4 substrate for WWAN 5-band application.On one side of the substrate,a monopole patch and a 50-micro-strip feed-line with length of 25mm are etched.The monopole patch is directed fed by the feed-line and operates a resonant mode at 2.66GHz.On the other side of the substrate,a coupled-fed monopole with four arms(an L-shaped arm,a left arm,a right arm,and an F-shaped arm)and a ground plane are printed.The coupled-fed monopole is connected to the ground plane through one of the arms(the F-shaped arm).Beside,each arm of the monopole excites its own resonant mode,except one of the arms(the left arm)is used for improving the impedance matching.By adjusting the length of the four arms,the antennas operating bandwidth based on the 6-dB return loss is from 0.72-1.15GHz and 1.45-2.2GHz for GSM 850/900,GSM 1800/1900,and UMTS applications.The overall dimension of the proposed antenna is 60×110×0.8mm3 that contains an antenna portion of 60×15mm2 and a ground plane of 60×95mm2.The proposed antenna having dual wide operating bandwidth and a small size with planar structure are suitable for smart phone handset.This article also provides the studies of measured radiation patterns,antenna gain,and radiation efficiency.Furthermore,the simulated results of antenna SAR obtained by SEMCAD-X are presented and discussed.Both the measured results and antenna SAR demonstrate the reliability of the proposed antenna.
Wen-Shan Chen Bau-Yi Lee Hung-Ying Lin Chien-Min Cheng Shih-Chiang Chiu Jing-Yen Chen
Department of Electronic Engineering Southern Taiwan University of Science and Technology,Tainan Cit Department of Electrical Engineering Tung Fang Design University,Kaohsiung City 82941,Taiwan
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
208-212
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）