Title :
A 57-to-75 GHz dual-mode wide-band reconfigurable oscillator in 65nm CMOS
Author :
Cheng-Hsien Hung ; Gharpurey, Ranjit
Author_Institution :
Univ. of Texas at Austin, Austin, TX, USA
Abstract :
A dual-mode LC-tank based VCO for mm-wave applications is described. The design employs reconfiguration of the active negative resistance core around the LC tank, in order to provide two oscillation modes. The frequency spacing of the two modes is determined by an inductor ratio. The design is implemented in a 65nm CMOS process, with measured tuning ranges of 56.9 GHz to 65.4 GHz, and 64.6 GHz to 75.3 GHz in the two modes respectively, for a net tuning range of 28%. The oscillator consumes 13 mW from a 1 V supply. The minimum switch size that is required to ensure mode switching is analyzed.
Keywords :
CMOS analogue integrated circuits; millimetre wave integrated circuits; millimetre wave oscillators; voltage-controlled oscillators; CMOS process; LC-tank based VCO; active negative resistance core; dual-mode wideband reconfigurable oscillator; frequency 56.9 GHz to 65.4 GHz; frequency 57 GHz to 75 GHz; frequency spacing; inductor ratio; mm-wave applications; mode switching; oscillation modes; power 13 mW; size 65 nm; voltage 1 V; CMOS integrated circuits; Inductance; Inductors; Switches; Tuning; Voltage-controlled oscillators; Dual-mode; VCO; oscillator; phase noise; tuning range; varactor;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2014 IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
978-1-4799-3862-9
DOI :
10.1109/RFIC.2014.6851714
