Title :
Wide capture range PLL with LC-VCO
Author :
Zou, Xuecheng ; Jiang, Xiang ; Xiao, Dingzhong ; Liu, Sanqing
Author_Institution :
Dept. of Electron. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A wide capture range PLL with low phase noise is proposed and analyzed. The PLL incorporates a LC voltage-controlled oscillator (VCO) to get low phase noise while the divider is controlled by low pass filter (LPF) voltage to achieve wide capture range. The proposed PLL is designed based on the SMIC 0.18-μm 1P5M CMOS process with a 2.5 V supply voltage. HSPICE simulation shows that the output frequency of proposed PLL alternates from 0.3 GHz to 1.4 GHz, and the phase noise is below-120 dB at a 300 KHz offset from VCO center frequency.
Keywords :
CMOS integrated circuits; SPICE; low-pass filters; phase locked loops; voltage-controlled oscillators; 0.18 micron; 0.3 to 1.4 GHz; 2.5 V; 300 KHz; HSPICE simulation; LC-VCO; LPF; SMIC 1P5M CMOS process; low pass filter; phase locked loop; voltage-controlled oscillator; wide capture range PLL; Clocks; Frequency; Hysteresis; Inductors; Phase locked loops; Phase noise; Telecommunication control; Tuning; Voltage control; Voltage-controlled oscillators; Analog circuits; PLL; VCO; phase noise;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618078
