A phase shifter includes a substrate, a tunable dielectric film having a dielectric constant between 70 to 600, a tuning range of 20 to 60%, and a loss tangent between 0.008 to 0.03 at K and Ka bands positioned on a surface of the substrate, a coplanar waveguide positioned on a surface of the tunable...http://www.google.es/patents/US6954118?utm_source=gb-gplus-sharePatente US6954118 - Voltage tunable coplanar phase shifters with a conductive dome structure
Voltage tunable coplanar phase shifters with a conductive dome structure
