A cost-efficient low profile dual-band circularly polarized (CP) fabry-perot cavity antenna (FPCA) with large axial ratio (AR) bandwidth is experimentally demonstrated in this paper. The utilized partially reflective surface (PRS) which comprises an array of square loops in one side and asymmetric meander-lines in another side of dielectric layer, is designed so as to realize a roughly linear phase of transmittance in a wide frequency band for both LP components with nearly 90° phase difference between them. A single-layer high impedance surface (HIS) is employed to compensate the phase difference between the two LP components of the reflected waves from the PRS. The cavity is excited by a linearly polarized (LP) primary source with embedded two parasitic patches, which are all aligned along an optimal slant angle equal to 55° to not only generate two notches within the band 14–15.5 GHz, but also compensate the difference between magnitudes of two orthogonal components of transmitted waves through the PRS. A prototype with the dimensions of 1.7λmin×1.7λmin×.41λmin is fabricated and the measurement results show that the peak gain of antenna is 10 dBi and 9.2 dBi at 14.125 GHz and 15.375 GHz, respectively and the AR is below 3 dB from 13.5 GHz to 15.7 GHz (15%).