Circularly-Polarized Circular Meandered Microstrip Antennas for WLAN Applications

摘要

A meandered quarter-mode of the circle with arc-shaped slots and a probe-feed is proposed to produce CP radiation. Two antennas are presented, in which, one is with two arc-shaped slots and the other is having 3-arc-shaped slots to control the return-loss at the phase-shift variation of two orthogonal-modes. The 10dB Bandwidth of the Antenna-1 (A1) is 1.24GHz (4.52-5.76GHz) and Antenna-2 (A2) is 1.21GHz (4.5-5.71GHz). The 3dB AR Bandwidth of A1 is 200 MHz (4810-5010 MHz) and A2 is 120MHz (4830-4950 MHz). The gain obtained for both antennas is 5dBic. The proposed antennas are fabricated and the simulation analysis is presented.