Title :
An extended frequency range CMOS voltage-controlled oscillator
Author :
Xu, Chao ; Sargeant, Winslow ; Laker, Kenneth ; Van der Spiegel, Jan
Author_Institution :
PMC-Sierra Inc., Allentown, PA, USA
Abstract :
This paper presents an extended frequency range CMOS monolithic voltage-controlled oscillator (VCO) design. A negative feedback control algorithm is used to automatically adjust the VCO range according to the control voltage. Based on this analog feedback control algorithm, the VCO achieves a wide range without any pre-register settings. Low phase noise is achieved by using both coarse control and fine control in the VCO. A 600 MHz to 3.3 GHz monolithic CMOS PLL, based on this wide range and low phase noise VCO, has been fabricated in TSMC 0.18 μm, 1.8 V CMOS technology and is used in many different applications such as FC, GE, and SONET etc.
Keywords :
CMOS integrated circuits; MMIC oscillators; UHF oscillators; feedback oscillators; integrated circuit design; integrated circuit measurement; phase locked loops; phase noise; voltage-controlled oscillators; 0.18 micron; 1.8 V; 600 MHz to 3.3 GHz; CMOS monolithic extended frequency range VCO; PLL applications; VCO control voltage; VCO range automatic adjustment; analog negative feedback control algorithms; coarse/fine frequency control; low phase noise; phase locked loops; pre-register settings; voltage-controlled oscillators; wide oscillator frequency range; Automatic control; Automatic voltage control; CMOS technology; Feedback control; Frequency; Negative feedback; Phase locked loops; Phase noise; SONET; Voltage-controlled oscillators;
Conference_Titel :
Electronics, Circuits and Systems, 2002. 9th International Conference on
Print_ISBN :
0-7803-7596-3
DOI :
10.1109/ICECS.2002.1046185
