This paper proposes an antenna with unidirectional beam and radiating circular polarization for wireless local area network (WLAN) applications at 2.45 GHz b. The antenna structure is made up of the 1mm copper plate and folded arms in parallel plane with 30 degrees bended ground plane. This structure is double fed by coaxial probe. The |S11| of less than -10 dB and axial ratio (AR) of less than 3 dB can operate along the frequency range from 2.25 to 2.9 GHz with high gain. The AR beamwidths in xz- and yz-planes are about 80 and 100 degrees, respectively.
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This paper proposes an antenna with unidirectional beam and radiating circular polarization for wireless local area network (WLAN) applications at 2.45 GHz b. The antenna structure is made up of the 1mm copper plate and folded arms in parallel plane with 30 degrees bended ground plane. This structure is double fed by coaxial probe. The |S11| of less than -10 dB and axial ratio (AR) of less than 3 dB can operate along the frequency range from 2.25 to 2.9 GHz with high gain. The AR beamwidths in xz- and yz-planes are about 80 and 100 degrees, respectively.