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Dual-band wide-beam crossed asymmetric dipole antenna for GPS applications

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3 Author(s)
Ta, S.X. ; Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea ; Park, I. ; Ziolkowski, R.W.

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.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 25 )