rf phase shifter using mems switches on a tapered coplanar waveguide

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ID: 254717
2012
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Abstract
This paper presents the analysis and design of tapered coplanar waveguide based RF phase shifter using MEMSswitches for microwave and millimeter-wave applications. The equivalent circuit of the phase shifter has been analyzed withthe capacitances of MEMS switches in both up and down states. A control voltage applied between the center conductorand the switch’s membrane actuates it and pulls down the membrane, creating a slow-wave transmission line. The loadingcapacitance gets added up with the line capacitance, thus varying the characteristic impedance of the line. This change inimpedance varies the phase velocity, thereby producing a phase shift. The use of tapered coplanar waveguide as an alternative to the conventional waveguide produces an increase in phase shift per unit length with a small increase in insertion loss.By accurate design of the taper sections, the losses can be reduced further.
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boothalingam2012songklanakarinrf Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Nataraj Boothalingam;Porkumaran Karantharaj
Journal ferroelectrics
Year 2012
DOI
DOI not found
URL
http://rdo.psu.ac.th/sjstweb/journal/34-6/0597-0721-34-6-645-651.pdf
Keywords
mems

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