题目/Title：A 38- to 40-GHz Current-Reused Active Phase Shifter Based on the Coupled Resonator

作者/Author：贾海昆,池保勇,况立雪,王志华
                        Haikun Jia,Baoyong Chi,Lixue Kuang,Zhihua Wang

期刊/Journal：IEEE Transactions on Circuits and Systems II: Express Briefs

年份/Issue Date：2014Dec.

卷（期）及页码/Volume（No.）&pages：Vol.61, No.12, pp. 917 - 921

摘要/Abstract：
A 38-40 GHz current-reused active phase shifter based on coupled resonator is proposed. Coupled resonator is used to increase the phase shifting range and reduce the gain variation along with phase shifting value. The digital controlled artificial dielectric (DiCAD) transmission lines are used instead of varactors to achieve high quality and directly digital control, and current reuse technique is employed to reduce the power consumption. Implemented in 65nm CMOS, the phase shifter occupies a chip area of 0.16 mm2 without pads and consumes 6.6 mA current from 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 90º phase shifting range.