01694nas a2200217   4500008004100000245011000041210006900151260000900220300001400229490000600243520100100249653000801250653000801258653000801266653000901274653002101283653002701304100001401331700001401345856011701359       2011                        eng d00aNovel scanned beam millimeter-wave antenna using micromachined variable capacitors on coplanar structures0 aNovel scanned beam millimeterwave antenna using micromachined va  c2011  a117 - 1210 v93 aThis paper presents a new approach of modelling, design, and characteristics of variable radio frequency microelectromechanical system (RF-MEMS) capacitor integrated on leaky wave antenna (LWA) operating at 94 GHz. This antenna was implemented on grounded coplanar waveguide (CPW). A 2D distributed mathematical model for the capacitor has been developed alongthis paper; we formulate and solve the static and dynamic problems associated with the proposed RF-MEMS capacitor. The obtained results are in good agreement with the ANSYS simulations. A full-wave simulation was used to investigate the microwave performances of the proposed antenna. This prototype exhibits continuous tuning radiation angle and beamwidth capability by tuning bias voltages from 0 V to 60 V. The proposed antenna presents flexibility, high directivity, compact size, and low-cost characteristics. The LWA can be used in applications which require high-performance such as imaging arrays and collision-avoidance radars.10aCPW10aDQM10aLWA10aMEMS10aMillimeter-waves10aSurface micromachining1 aHamdi, A.1 aSamet, A.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-80053034494&partnerID=40&md5=86725cbb55db5daaeae532550fd98ef2