4x2 Substrate Integrated Dielectric Resonator Antenna Array in Ka-band

This paper proposes a kind of low-profile substrate integrated dielectric resonator antenna array (SIDRAA) for millimeter-wave applications, which composed of eight SIDRA elements and a co-designed substrate integrated waveguide (SIW) feeding structure. A 4 x 2 SIDRAA is designed and simulated in Ka-band employing the substrate of Rogers RT6010 and RT5880. The performances of the array were examined in respect to its impedance matching, radiation performances of the patterns and gain. The 4 x 2 SIDRAA prototype exhibits a 10-dB impedance bandwidth of around 8.4% from 32.9 to 35.8 GHz, and it shows an average gain of 12.8 dBi with the broadside radiation patterns. The proposed SIDRAA is lost cost, compact size, high reproducibility, and easy accommodation to other circuits.