Title :
RF performance characteristics of a novel ferroelectric varactor shunt switch
Author :
Subramanyam, Guru ; Ahamed, Faruque
Author_Institution :
Dept. of ECE, Dayton Univ., OH
Abstract :
Novel ferroelectric/paraelectric variable capacitor (varactor) shunt switches have been designed, and experimentally verified recently. The ferroelectric/paraelectric varactor shunt switch operation is based on nonlinear dielectric tunability of a Ba0.6Sr0.4TiO3 (BST) thin-film sandwiched between two metal layers in the parallel plate configuration. Coplanar waveguide implementation of the varactor shunt switch results in a high speed RF switch, with a simple two-metal layer Si MMIC compatible process on high resistivity Si substrates
Keywords :
MMIC; barium compounds; coplanar waveguides; elemental semiconductors; ferroelectric devices; ferroelectric thin films; microwave switches; silicon; strontium compounds; titanium compounds; varactors; Ba0.6Sr0.4TiO3-Si; MMIC; coplanar waveguide; ferroelectric variable capacitor; high speed RF switch; metal layers; nonlinear dielectric tunability; paraelectric variable capacitor; parallel plate configuration; shunt switch; silicon substrates; thin film; Binary search trees; Capacitors; Coplanar waveguides; Dielectric thin films; Ferroelectric materials; MMICs; Radio frequency; Strontium; Switches; Varactors;
Conference_Titel :
Circuits and Systems, 2005. 48th Midwest Symposium on
Conference_Location :
Covington, KY
Print_ISBN :
0-7803-9197-7
DOI :
10.1109/MWSCAS.2005.1594177
