A multi-frequency microstrip-fed annular slot antenna

Author

Hooman Tehrani ; Kai Chang

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

2

fYear

2000

fDate

16-21 July 2000

Firstpage

632

Abstract

A single feed multi-frequency annular slot antenna is analyzed with an integral equation program and experimentally. Experimental impedance bandwidths of the first three operating frequencies range from 6.6 to 10.8 percent. At these frequencies, the antenna displays a broadside bi-directional radiation pattern, with directivity on the order of 5 dB. Tuning the antenna is examined by changing the width of the slot ring and adjusting the open-circuited microstrip feed line.

Keywords

antenna feeds; antenna radiation patterns; directive antennas; integral equations; multifrequency antennas; slot antennas; tuning; 3.5 GHz; 4.5 GHz; 6.37 GHz; antenna tuning; broadside bi-directional radiation pattern; directivity; impedance bandwidths; integral equation; microstrip-fed annular slot antenna; multi-frequency annular slot antenna; open-circuited microstrip feed line; single feed; slot ring width; Antenna feeds; Antenna radiation patterns; Bandwidth; Bidirectional control; Displays; Frequency; Impedance; Integral equations; Microstrip antennas; Slot antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2000. IEEE

Conference_Location

Salt Lake City, UT, USA

Print_ISBN

0-7803-6369-8

Type

conf

DOI

10.1109/APS.2000.875259

Filename

875259