Title :
A 5.2–11.8MHz octa-phase relaxation oscillator for 8-PSK FM-UWB transceiver systems
Author :
Hang Lv ; Bo Zhou ; Dang Liu ; Woogeun Rhee ; Yongming Li ; Zhihua Wang
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
An octa-phase differential relaxation VCO generating both triangular and rectangular waveform outputs is designed for 8-PSK subcarrier generation in FM-UWB transceiver systems. The VCO consists of cascaded quad-phase relaxation oscillators in which the second stage oscillator provides 45° phase shifting with pseudo injection locking. The 5.2-11.8MHz octa-phase VCO implemented in 0.18μm CMOS consumes 2.5mW from a 1.8V supply.
Keywords :
CMOS analogue integrated circuits; frequency modulation; integrated circuit design; microwave generation; microwave integrated circuits; microwave oscillators; phase shift keying; radio transceivers; relaxation oscillators; ultra wideband communication; voltage-controlled oscillators; 8-PSK FM-UWB transceiver system; CMOS processing; cascaded quadphase relaxation oscillator; frequency 5.2 MHz to 11.8 MHz; octaphase differential relaxation VCO; octaphase relaxation oscillator; phase shifting; power 2.5 mW; pseudoinjection locking; rectangular waveform output; second stage oscillator; size 0.18 mum; subcarrier generation; triangular waveform output; voltage 1.8 V; CMOS integrated circuits; Capacitors; Threshold voltage; Transceivers; Transistors; Voltage-controlled oscillators;
Conference_Titel :
VLSI Design, Automation, and Test (VLSI-DAT), 2013 International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4673-4435-7
DOI :
10.1109/VLDI-DAT.2013.6533837
