Design of small-size wide-bandwidth microstrip-patch antennas

Author

Shackelford, Aaron K. ; Lee, Kai-Fong ; Luk, K.M.

Author_Institution

Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA

Volume

45

Issue

1

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

75

Lastpage

83

Abstract

Several designs for small-size wide-bandwidth microstrip antennas are examined through simulation and experiment. Designs are presented based on two wideband patch antennas: the U-slot patch antenna, and the L-probe-fed patch antenna. Several techniques are utilized to reduce the resonant length of these wideband microstrip-patch antennas: increasing the dielectric constant of the microwave substrate material, the addition of a shorting wall between the conducting patch and the ground plane, and the addition of a shorting pin between the conducting patch and the ground plane. Simulation and experimental results confirm that the size of the antennas can be reduced by as much as 94%, while maintaining impedance bandwidths in excess of 20%.

Keywords

antenna radiation patterns; broadband antennas; microstrip antennas; 900 MHz; L-probe-fed patch antenna; U-slot patch antenna; conducting patch; dielectric constant; ground plane; impedance bandwidths; resonant length; shorting pin; shorting wall; small-size wide-bandwidth microstrip-patch antennas; Broadband antennas; Conducting materials; Dielectric constant; Dielectric materials; Dielectric substrates; Microstrip antennas; Microwave antennas; Microwave theory and techniques; Patch antennas; Resonance;

fLanguage

English

Journal_Title

Antennas and Propagation Magazine, IEEE

Publisher

ieee

ISSN

1045-9243

Type

jour

DOI

10.1109/MAP.2003.1189652

Filename

1189652