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In‐line RF‐MEMS series switches for reconfigurable antenna applications
Author(s) -
Jung Chang Won,
Lee Byungje,
De Flaviis Franco
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22971
Subject(s) - coplanar waveguide , capacitive sensing , microelectromechanical systems , spiral antenna , microwave , electrical engineering , electric power transmission , antenna (radio) , reconfigurable antenna , transmission line , series and parallel circuits , radio frequency , engineering , line (geometry) , materials science , optoelectronics , electronic engineering , telecommunications , voltage , dipole antenna , antenna efficiency , coaxial antenna , geometry , mathematics
Abstract The air bridged RF‐MEMS capacitive series switches in single pole single throw transmission lines for reconfigurable antenna applications are presented. The RF characteristics of capacitive series switches are analyzed, measured, and compared with microstripline and coplanar‐waveguide, which are generally used for transmission lines of MEMS reconfigurable circuits. RF‐MEMS series switches are fabricated in both transmission lines on a glass substrate (ε r = 7.4 and tan δ = 0.001). The reconfigurable beam steering spiral antenna ( f o = 11 GHz), which is monolithic integrated with RF‐MEMS capacitive series switches on the same glass substrate, is also presented as an example of the use of in‐line capacitive series switches. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3130–3134, 2007; Published online in Wiley Inter‐Science (www.interscience.wiley.com). DOI 10.1002/mop.22971