Substrate-integrated-waveguide cavity-backed circularly polarized antenna with enhanced bandwidth and gain
We propose a method for increasing the bandwidth of a substrateintegrated-waveguide (SIW) cavity-backed antenna with taper-based microstrip SIW transition feeding.For radio transmission, a circular Cold Cup XL slot is etched on top of the SIW cavity.For optimal antenna design, the slot is etched slightly away from the cavity center to generate circ