Title :
A Coplanar Waveguide Fed Two Arm Archimedean Spiral Slot Antenna With Improved Bandwidth
Author :
Ahmad Mashaal, O. ; Rahim, S.K.A. ; Abdulrahman, A.Y. ; Sabran, M.I. ; Rani, M.S.A. ; Hall, Peter S.
Author_Institution :
Wireless Commun. Centre, Univ. Teknol. Malaysia, Skudai, Malaysia
Abstract :
A compact wideband circularly polarized (CP) printed antenna design is presented in this communication. The proposed antenna consists of two Archimedean spiral slots, loaded with two chip resistors and fed by a coplanar waveguide (CPW) transmission line. The antenna is situated in one plane and fed without using an external balun or a matching network. The antenna has wideband input impedance bandwidth with circular polarization (CP), and broad beamwidth radiation pattern over 1.6:1 bandwidth. The study has shown that the proposed antenna is capable of improving the CP bandwidth and reducing the overall antenna size.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; coplanar waveguides; microstrip antennas; polarisation; slot antennas; spiral antennas; Archimedean spiral slot antenna; antenna radiation pattern; chip resistors; coplanar waveguide feed; wideband circularly polarized printed antenna design; Antenna measurements; Antenna radiation patterns; Bandwidth; Coplanar waveguides; Slot antennas; Spirals; Circular polarization; coplanar waveguide (CPW); spiral antenna; ultra wideband;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2224831
