DocumentCode :
1339471
Title :
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
Link To Document :
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