DocumentCode :
63848
Title :
A 38- to 40-GHz Current-Reused Active Phase Shifter Based on the Coupled Resonator
Author :
Haikun Jia ; Baoyong Chi ; Lixue Kuang ; Zhihua Wang
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Volume :
61
Issue :
12
fYear :
2014
fDate :
Dec. 2014
Firstpage :
917
Lastpage :
921
Abstract :
A 38- to 40-GHz current-reused active phase shifter based on a coupled resonator is proposed. The coupled resonator is used to increase the phase-shifting range and reduce the gain variation along with the phase-shifting value. The digital controlled artificial dielectric transmission lines are used instead of varactors to achieve high quality and directly digital control, and a current reuse technique is employed to reduce the power consumption. Implemented in 65-nm CMOS, the phase shifter occupies a chip area of 0.16 mm2 without pads and consumes a 6.6 mA current from a 1.0 V power supply. Measured results show that the gain variation of the phase shifter is less than 1 dB over 38-40 GHz while achieving the 90 ° phase-shifting range.
Keywords :
CMOS digital integrated circuits; direct digital control; millimetre wave resonators; phase shifters; transmission lines; CMOS; coupled resonator; current 6.6 mA; current reuse technique; current-reused active phase shifter; digital controlled artificial dielectric transmission lines; direct digital control; frequency 38 GHz to 40 GHz; phase-shifting range; phase-shifting value; size 65 nm; voltage 1.0 V; CMOS integrated circuits; Gain; Phase shifters; Power transmission lines; Resonant frequency; Transmission line measurements; Tuning; Coupled resonator; current reuse; digital controlled artificial dielectric (DiCAD); phase shifter;
fLanguage :
English
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-7747
Type :
jour
DOI :
10.1109/TCSII.2014.2356891
Filename :
6895154
Link To Document :
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