Title :
A novel phase shifter for 60 GHz phased arrays
Author :
Pepe, Domenico ; Zito, Domenico
Author_Institution :
Theor. Modelling & Design Centre, Tyndall Nat. Inst., Cork, Ireland
Abstract :
This paper presents a novel active phase shifter circuit topology based on LC all-pass lattice filter with variable inductors and capacitors within an amplifier. By tuning properly the inductance and capacitance of the filter it is possible to shift the input signal by the desired amount of phase from 0° to 180°. The preliminary design of a 60-GHz 8-phase phase shifter with phase resolution 22.5° from 0° to 157.5° has been carried in 28nm FDSOI CMOS by STMicroelectronics in order to demonstrate the validity of the proposed idea. Simulation results show an average gain of 15 dB at 60.8 GHz, a 3 dB bandwidth of 12 GHz, RMS gain error and RMS phase error lower than 1.8 dB and 12° in band. Simulations of the normalized gain pattern of a 4-element phased array with the proposed phase shifter show a deviation of the beam steering angle lower than 6° with respect to the ideal phase shifts.
Keywords :
CMOS integrated circuits; antenna phased arrays; antenna radiation patterns; beam steering; millimetre wave amplifiers; millimetre wave antenna arrays; millimetre wave filters; millimetre wave integrated circuits; millimetre wave phase shifters; FDSOI CMOS; LC all-pass lattice filter; RMS gain error; RMS phase error; STMicroelectronics; active phase shifter circuit topology; beam steering angle; frequency 60 GHz; phase resolution; phased antenna array; size 28 nm; variable capacitor; variable inductor; CMOS integrated circuits; Gain; Phase shifters; Phased arrays; Transceivers; Wireless communication; 28nm; CMOS; Phase shifter; lattice filter; mm-wave;
Conference_Titel :
Signals and Systems Conference (ISSC), 2015 26th Irish
Conference_Location :
Carlow
DOI :
10.1109/ISSC.2015.7163752
