Pattern reconfigurable slot antenna with broadband operation

Author

Yan-Hua Chen ; Row, Jeen-Sheen

Author_Institution

Dept. of Electr. Eng., Nat. Changhua Univ. of Educ., Changhua, Taiwan

fYear

2014

fDate

2-5 Dec. 2014

Firstpage

607

Lastpage

608

Abstract

A pattern reconfigurable design using a single-feed slot antenna is presented. Several PIN diodes are embedded into the ground plane, and by controlling the states of the diodes, the antenna structure can be worked as a 0.5 λ slot antenna and a 0.75 λ monopole slot antenna. A prototype is designed to give three different radiation modes in the H-plane, and these modes can respectively generate an omnidirectional pattern and two unidirectional patterns with reversed main-beam directions. Experimental results indicate that the omnidirectional mode has a gain variation of about 6 dB across all azimuthal angles and the unidirectional mode has a front-to-back ratio of higher than 10 dB. In addition, the working bandwidth of the reconfigurable antenna is more than 15 %.

Keywords

antenna feeds; antenna radiation patterns; broadband antennas; slot antennas; PIN diodes; broadband operation; omnidirectional pattern; pattern reconfigurable slot antenna; reversed main-beam directions; single-feed slot antenna; unidirectional patterns; Antenna radiation patterns; Bandwidth; Loss measurement; Prototypes; Slot antennas; Switches; pattern reconfigurable antenna; slot antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2014 International Symposium on

Conference_Location

Kaohsiung

Type

conf

DOI

10.1109/ISANP.2014.7026797

Filename

7026797