Title :
A full-360° vector-sum phase shifter with low RMS phase and gain errors for 60 GHz 5-bit application
Author :
Yu Ye ; Ling-Yun Li ; Rui Tong ; Xiao-Wei Sun
Author_Institution :
Key Lab. of Terahertz Solid-State Technol., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, China
Abstract :
A 60 GHz vector-sum phase shifter with a continuous full-360° phase-shifting range is proposed. The employed I/Q network is optimized to fit the varied load impedance of the different states of the adder. A measured low root-mean-square (rms) phase error and rms gain error of less than 2.5° and 1 dB are observed from 56 to 64 GHz, respectively, to offer a phase resolution of 5-bit or better. The phase shifter achieves an average gain of 5 dB and gain flatness of ±1.5 dB. The chip draws 50 mA from 2.5 V supply with a saturated output power of 5 dBm.
Keywords :
adders; optimisation; phase shifters; I/Q network; RMS phase; adder; current 50 mA; frequency 56 GHz to 64 GHz; gain 5 dB; gain errors; load impedance; vector-sum phase shifter; voltage 2.5 V; Gain; Gain measurement; Impedance; Measurement uncertainty; Phase measurement; Phase shifters; Scattering parameters; Active phase shifter; I/Q network; low rms gain error; low rms phase error; vector-sum;
Conference_Titel :
European Microwave Integrated Circuit Conference (EuMIC), 2014 9th
Conference_Location :
Rome
DOI :
10.1109/EuMIC.2014.6997853
