Wide-band planar monopole antennas

Wide-band planar monopole antennas

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), squa...

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Veröffentlicht in:IEEE transactions on antennas and propagation 1998-02, Vol.46 (2), p.294-295
Hauptverfasser: Agrawall, N.P., Kumar, G., Ray, K.P.
Format: Artikel
Sprache:eng
Schlagworte:
Antenna measurements
Antenna radiation patterns
Bandwidth
Broadband antennas
Degradation
Equations
Frequency measurement
Impedance
Microstrip antennas
Voltage
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Zusammenfassung: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)
ISSN:0018-926X
1558-2221
DOI:10.1109/8.660976