Novel Metal Fixture with Extra Tuning Function for Millimeter Wave Cylindrical Dielectric Resonator Antenna

A cylindrical dielectric-resonator-based millimeter-wave antenna is presented in this paper. A novel fixture is utilized. It consists of a pair of hook-shaped probes which are place in the same direction as the feeding slot. It is soldered with both the ground plane and cylindrical resonator antenna. The fixture not only has favorable fabrication simplicity and satisfying stability, but also tuning function. It brings about extra degree of design freedom. The HEM_11δ excited by the slot is either purified or suppressed by the pair of probes with different locations. Therefore, the fixture has potential to work as coupling assistors, isolation enhancers or cross-polarization suppressers. The antenna operates at 24 GHz with a bandwidth of 18.2%, and a gain of 6.1 dBi. The antenna is suitable for modern communication systems like automotive radars and other systems at even high bands.