A series-fed linear substrate-integrated dielectric resonator antenna array (SIDRAA) is presented for millimeter-wave applications,\nin which the substrate-integrated dielectric resonator antenna (SIDRA) elements and the feeding structure can be codesigned and\nfabricated using the same planar process. A prototype 4 Ã?â?? 1 SIDRAA is designed at Ka-band and fabricated with a two-layer printed\ncircuit board (PCB) technology. Four SIDRAs are implemented in the Rogers RT6010 substrate using the perforation technique\nand fed by a compact substrate-integrated waveguide (SIW) through four longitudinal coupling slots within the Rogers RT5880\nsubstrate. The return loss, radiation patterns, and antenna gain were experimentally studied, and good agreement between the\nmeasured and simulated results is observed. The SIDRAA example provides a bandwidth of about 10% around 34.5 GHz for\n10 dB return loss and stable broadside radiation patterns with the peak gain of 10.5ââ?¬â??11.5 dBi across the band.
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