Title :
An Ultra-Compact CMOS Variable Phase Shifter for 2.4-GHz ISM Applications
Author :
Zheng, You ; Saavedra, Carlos E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, ON
fDate :
6/1/2008 12:00:00 AM
Abstract :
An ultra-compact monolithic microwave integrated circuit active variable phase shifter is proposed and implemented using CMOS technology. It is a reflective-type phase shifter consisting of a compact three-transistor active circulator and a second-order LC network. The use of an active inductor in the second-order LC network makes this phase shifter all active and ultra compact with a size of only 0.357 including bonding pads. The phase shifter was designed and demonstrated at 2.4 GHz and has a linear and continuously tunable range of 120 across the 2.4-GHz industrial-scientific-medical band.
Keywords :
CMOS integrated circuits; MMIC phase shifters; microwave transistors; CMOS technology; ISM application; LC network; frequency 2.4 GHz; transistor active circulator; ultra-compact monolithic microwave integrated circuit; variable phase shifter; Active circuits; CMOS; circulators; monolithic microwave integrated circuit (MMIC) phase shifters; multiple-input multiple-output (MIMO) systems;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2008.923375
