Title :
Size reduction of a wideband slot antenna
Author :
Lu, Y. ; Huang, Y. ; Chattha, H.T.
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Liverpool, Liverpool
Abstract :
Most portable UWB antennas generate near omni-directional radiation pattern which is not suitable for some applications. In this paper, we present a numerical and experimental investigation of a wideband (4.5 GHz to 8.5 GHz) microstrip slot antenna of reduced size which produces a directional pattern. It is found that the optimum design of this antenna can be achieved by cutting a wide slot at the edge of the ground plane with a properly designed 50 ohms and 100 ohms microstrip feed line. Compared to the conventional half wavelength slot antenna fed by a fork like microstrip line, this antenna size is almost reduced to half of its counterpart. Furthermore, a reflector can be added on one side of it to achieve a unidirectional radiation pattern.
Keywords :
antenna feeds; antenna radiation patterns; microstrip antennas; microstrip lines; slot antennas; ultra wideband antennas; microstrip feed line; microstrip slot antenna; omnidirectional radiation pattern; portable UWB antenna; ultra wideband slot antenna size reduction; Antenna feeds; Antenna radiation patterns; Bandwidth; Broadband antennas; Directive antennas; Frequency; Impedance; Microstrip antennas; Slot antennas; Ultra wideband antennas;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
