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On-chip mounted millimeter-wave dielectric resonator antenna

An on-chip dielectric resonator antenna is presented. A cylindrical dielectric resonator is used as a radiator. It is tilted sideways and is placed partly inside a shallow crate cut out in the chip area. An on-chip microstrip quarter-wavelength resonator excites the dielectric resonator. Besides the advantageously easy and precise on-chip alignment, the antenna offers very wide beamwidth together with reasonable frequency bandwidth and high radiation efficiency. Using an alumina cylinder of 1 mm diameter and 1 mm length, an antenna operating at 80 GHz is presented, showing bandwidth (input reflection below −10dB) of 3% and simulated peak efficiency of 65%.