Title :
Millimeter-wave phase shifters utilizing planar integrated Schottky barrier diodes
Author :
Zhiyang Liu ; Midkiff, J.C. ; Weilke, R.M.I.I.
Author_Institution :
Dept. of Electr. & Comput. Eng., Virginia Univ., Charlottesville, VA, USA
Abstract :
Two prototype phase shifters operating at 220 GHz and based on planar integrated Schottky barrier diodes have been designed, fabricated, and tested. A 180/spl deg/ reflection-coefficient phase shifter has demonstrated a measured phase shift of 184/spl deg//spl plusmn/22/spl deg/ over the 216-221 GHz band with return loss no greater than 6 dB. A quadrature (90/spl deg/) branchline-coupler phase shifter has given a measured phase shift of 85/spl deg//spl plusmn/10/spl deg/ over the 219-225 GHz band with insertion loss no greater than 8.5 dB. The phase shifters presented in this work can be used as modulators for RF front-ends as well as for sideband generation.
Keywords :
Schottky diodes; integrated circuit design; integrated circuit measurement; microstrip circuits; millimetre wave phase shifters; 216 to 221 GHz; 219 to 225 GHz; 220 GHz; 6 dB; 8.5 dB; RF front-end modulators; insertion loss; microstrip circuits; mm-wave phase shifters; phase shift; planar integrated Schottky barrier diodes; quadrature branchline-coupler phase shifters; reflection-coefficient phase shifters; return loss; sideband generators; Insertion loss; Loss measurement; Millimeter wave measurements; Phase measurement; Phase modulation; Phase shifters; Prototypes; Schottky barriers; Schottky diodes; Testing;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210611
