Title :
Monolithic Ka-band phase shifter using voltage tunable BaSrTiO3 parallel plate capacitors
Author :
Erker, Erich G. ; Nagra, Amit S. ; Liu, Yu ; Periaswamy, Padmini ; Taylor, Troy R. ; Speck, James ; York, Robert A.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
fDate :
1/1/2000 12:00:00 AM
Abstract :
Monolithic Ka-band phase shifter circuit that employs voltage tunable BaSrTiO3 (BST) parallel plate capacitors is presented here. The circuit is capable of continuous 0°-157° phase shift at 30 GHz with an insertion loss of only 5.8 dB and return loss better than 12 dB. In addition to promising loss performance (27.1°/dB) at 30 GHz, the circuit reported here has several advantages over previously reported BST phase shifters such as moderate control voltages (20 V), room temperature operation, and compatibility with monolithic fabrication techniques
Keywords :
MIMIC; MMIC phase shifters; coplanar waveguides; delay lines; ferroelectric capacitors; losses; millimetre wave phase shifters; varactors; 20 V; 30 GHz; 5.8 dB; BaSrTiO3; control voltages; insertion loss; loss performance; monolithic Ka-band phase shifter; monolithic fabrication techniques; parallel plate capacitors; return loss; room temperature operation; voltage tunable capacitors; Binary search trees; Capacitors; Conductive films; Dielectric substrates; Ferroelectric films; Ferroelectric materials; Performance loss; Phase shifters; Tunable circuits and devices; Voltage;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
