Millimeter-wave Quarter-Wave Patch Antenna on Benzocyclobutene Polymer

This paper presents design, fabrication and characterization of a millimetre-wave lambda/4-patch antenna on a benzocyclobutene (BCB) polymer. This antenna is compatible with a wafer level packaging for a miniaturized wireless communication system. All components of this antenna are manufactured by using a gold electroplated and a BCB polymer patterned by a photolithography. The implemented antenna size was 3.5 times 3.5 times 0.05 mm³. The manufactured patch antenna mounted on V-connector was characterized using HP network analyzer for a return loss and a range-calibration setup for a radiation pattern. The fabricated antenna showed a minimum return loss of 30 dB at 51.75 GHz, -10 dB impedance bandwidth of 5 GHz from 49.5 to 54.5 GHz. In addition, the -3 dB beam-width is nearly 45 degree.