Wide-band planar monopole antennas

Author

Agrawall, Narayan Prasad ; Kumar, Girish ; Ray, K.P.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Madras, India

Volume

46

Issue

2

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

294

Lastpage

295

Abstract

The circular disc monopole (CDM) antenna has been reported to yield wide-impedance bandwidth. Experiments have been carried out on a CDM that has twice the diameter of the reported disc with similar results. New configurations are proposed such as elliptical (with different ellipticity ratios), square, rectangular, and hexagonal disc monopole antennas. A simple formula is proposed to predict the frequency corresponding to the lower edge of the bandwidth for each of these configurations. The elliptical disc monopole (EDM) with ellipticity ratio of 1.1 yields the maximum bandwidth from 1.21 GHz to more than 13 GHz for voltage standing wave ratio (VSWR)<2

Keywords

antenna radiation patterns; antenna testing; electric impedance; microstrip antennas; monopole antennas; circular disc monopole antenna; configurations; elliptical disc; ellipticity ratio; hexagonal disc; maximum bandwidth; microstrip antennas; rectangular disc; square disc; voltage standing wave ratio; wide-band planar monopole antennas; wide-impedance bandwidth; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Degradation; Equations; Frequency measurement; Impedance; Microstrip antennas; Voltage;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.660976

Filename

660976