High Gain Circularly Polarized Cylindrical DRA for mm-wave On-chip Applications

A circularly polarized (CP) cylindrical dielectric resonator antenna (CDRA) at millimeter wave frequency is designed to obtain improved antenna gain. The cylindrical DRA mounted on a Silicon substrate, on-chip-antenna (OCA), which is excited by simple dual conformal microstrip feeding network. Circular polarization is produced by exciting two broadside fundamental orthogonal hybrid modes inside CDRA. The proposed CP CDRA antenna is simulated using ANSYS HFSS software and it demonstrates a peak gain of 1.9 dBiC with a 3 dB axial ratio (AR) bandwidth of 4.7 % at center frequency of 53.525 GHz and impedance band-width of 19.3 % at center frequency of 54.9 GHz.