Title :
A CPW fed rectangular slot antenna for wideband circular polarization
Author :
Krishna, R. V. S. Ram ; Kumar, Ravindra
Author_Institution :
DIAT, Pune, India
Abstract :
A CPW excited rectangular slot antenna for circular polarization is presented. The feed line is terminated on a circular disc having a slant rectangular slit. Inverted L-shape strips are attached to the ground plane and protrude into the rectangular slot. The measured impedance bandwidth achieved by the antenna is 124% from 2.4 GHz to 10.2 GHz The measured bandwidth of circular polarization with axial ratio <; 3 dB is 40% (simulated - 48%) from 4.75 GHz to 7.1 GHz. The antenna is compact in size, has good radiation patterns and is expected to be useful for portable communication devices operating in the above mentioned range with requirement of circular polarization.
Keywords :
antenna feeds; antenna radiation patterns; coplanar waveguides; electric impedance measurement; microwave antennas; rectangular waveguides; slot antennas; ultra wideband antennas; CPW fed excited rectangular slot antenna; Inverted L-shape strips; UWB antenna; axial ratio; bandwidth 2.4 GHz to 10.2 GHz; bandwidth 4.75 GHz to 7.1 GHz; circular disc; feed line; impedance bandwidth measurement; portable communication devices; radiation patterns; slant rectangular slit; wideband circular polarization; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Coplanar waveguides; Polarization; Slot antennas; Circular Polarization; Coplanar Waveguide; Slot Antenna; UWB Antenna;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2014 IEEE
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4799-2298-7
DOI :
10.1109/RWS.2014.6830075
