Title :
An inverted-L antenna based on finite ground plane with zigzag structure
Author :
Yuan, Bin ; Wang, Xiu ; Zheng, Nan ; Chen, Yangbang
Author_Institution :
Key Lab. of Minist. of Educ. of China for Res. of Design & Electromagn. Compatibility of High Speed, Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A key focus of this paper is to investigate the influences of finite ground plane on the monopole inverted-L antenna in mobile phone. Based on this, a ground plane with a zigzag parasitic structure is originally proposed, combined with a typical inverted-L antenna, the overall novel structure overcomes the issues of low radiation efficiency and impedance mismatching caused by the finite ground plane in compact status. At GSM 900 band, the minimum value of Sn decreases to -27.5dB from -5dB, and the relative bandwidth of such new antenna reaches to 24% (VSWR<;2), which is about three times as wide as that of the conventional monopole inverted-L antenna, effectively expanding the monopole antenna´s bandwidth, and making it a great potential in practical application.
Keywords :
cellular radio; mobile handsets; monopole antennas; GSM 900 band; finite ground plane; impedance mismatching; low radiation efficiency; mobile phone; monopole inverted-L antenna; zigzag structure; Antenna measurements; Bandwidth; Dipole antennas; Microwave antennas; Mobile antennas; Inverted-L antenna; finite ground plane; zigzag;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2010 Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-7590-2
Electronic_ISBN :
978-1-902339-22-2
