Switched beam antenna based on RF MEMS SPDT switch on quartz substrate
2009 (English)In: IEEE Antennas and Wireless Propagation Letters, ISSN 1536-1225, E-ISSN 1548-5757, Vol. 8, 383-386 p.Article in journal (Refereed) Published
This letter demonstrates a 20-GHz radio frequency microelectromechanical system (RF MEMS)-based electrically switchable antenna on a quartz substrate. Two quasi-Yagi antenna elements are monolithically integrated with a single-pole double-throw (SPDT) MEMS switch router network on a 21 mm x 8 mm chip. Electrical beam steering between two opposite directions is achieved using capacitive MEMS SPDT switches in the router. Port impedance and radiation patterns are studied numerically and experimentally. Measured results show that the switched beam antenna features a 27% impedance bandwidth (S-11 = -10 dB), a gain of 4.6 dBi, and a front-to-back ratio of 14 dB at 20 GHz when the control voltage is applied to one of the switch pairs of the SPDT switch.
Place, publisher, year, edition, pages
2009. Vol. 8, 383-386 p.
Front-to-back ratio, half-power beamwidth (HPBW), quasi-Yagi antenna, radio frequency microelectromechanical system (RF MEMS), single-pole double-throw (SPDT) switch
Research subject Engineering Science with specialization in Microwave Technology
IdentifiersURN: urn:nbn:se:uu:diva-111192DOI: 10.1109/LAWP.2009.2018712ISI: 000267792700020OAI: oai:DiVA.org:uu-111192DiVA: diva2:279752