Title :
Dual-band wide-beam crossed asymmetric dipole antenna for GPS applications
Author :
Ta, Son Xuat ; Park, Ikmo ; Ziolkowski, Richard W.
Author_Institution :
Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea
Abstract :
A dual-band, wide-beam, circularly-polarised crossed asymmetric dipole antenna is presented for global positioning system (GPS) applications. Each dipole arm has an asymmetrically barbed arrowhead and contains two different-sized printed-inductors to reduce the length of the primary radiating element and to achieve dual-band operation. At 1.575 GHz, the antenna has a gain of 7.5 dBic, a radiation efficiency of 97.4 , and a 3dB axial ratio (AR) beamwidth of 143° and 152° in the x-z and y-z planes, respectively. At 1.227 GHz, the antenna has a gain of 6.3 dBic, a radiation efficiency of 90%, and a 3dB AR beamwidth of 132° and 140° in the x-z and y-z planes, respectively.
Keywords :
Global Positioning System; UHF antennas; dipole antennas; electromagnetic waves; inductors; microstrip antennas; multifrequency antennas; AR; GPS applications; antenna gain; asymmetrically barbed arrowhead; axial ratio; circularly-polarised antenna; dipole arm; dual-band wide-beam crossed asymmetric dipole antenna; frequency 1.227 GHz; frequency 1.575 GHz; global positioning system; printed-inductors; radiating element; radiation efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.2890
