Millimeter-wave Quarter-Wave Patch Antenna on Benzocyclobutene Polymer

Seonho SEOK, Nathalie ROLLAND, Paul-Alain ROLLAND

IEMN/IRCICA CNRS 8520
Cité Scientifique-Avenue Poincare BP 60069 59652 Villeneuve d’Ascq Cedex; France
E-mail: [email protected]

Abstract. This paper presents design, fabrication and characterization of a millimetre-wave λ/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 x 3.5 x 0.05 mm 3. The manufactured patch antenna mounted on V-connector was characterized using Agilent network analyzer E8361A 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 and - 10 dB impedance bandwidth of 5 GHz from 49.5 to 54.5 GHz. The measured gain is - 1.7 dBi and the - 3 dB beam-width is nearly 50 degree. In addition, the effect of various critical parameters of the proposed antenna such as a separation between an RF-feed and a shorting-pin, a ground plane size and the height of BCB polymer was investigated.