Title :
Elliptical planar monopole antenna with extremely wide bandwidth
Author :
Liang, X.-L. ; Zhong, S. -S ; Wang, W.
Author_Institution :
Shanghai Univ., China
fDate :
4/13/2006 12:00:00 AM
Abstract :
A planar monopole antenna with an extremely wide bandwidth is introduced, which is composed of an elliptical monopole patch and a trapeziform ground plane, both printed on the same side of a substrate, and is fed by a tapered CPW feeder in the middle of the ground plane. The simulated and experimental results demonstrate that this antenna achieves a ratio impedance bandwidth of 21.6:1 for VSWR≤2, and exhibits a nearly omnidirectional radiation pattern, while its area is only about 0.19λl×0.16λl where λl is the wavelength of the lowest operating frequency.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; microstrip antennas; monopole antennas; elliptical monopole patch; elliptical planar monopole antenna; omnidirectional radiation pattern; tapered CPW feeder; trapeziform ground plane; wide bandwidth antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20060438