Title :
A low voltage 900 MHz voltage controlled ring oscillator with wide tuning range
Author :
Chuang, Yun-Hsueh ; Jang, Sheng-Lyang ; Lee, Jian-Feng ; Lee, Shao-Hua
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
A 900-MHz two-stage CMOS voltage controlled ring oscillator with wide operating frequency tuning range is presented in This work. It is implemented with a 0.18-μm CMOS technology and biased at 1.8-V supply voltage. Its frequency tuning range is from 440 MHz to 1595 MHz. The VCO can function even biased at 1 V. And the phase noise is -73.3 dBc/Hz at 100 kHz frequency offset and -93 dBc/Hz at 1MHz.
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; phase noise; voltage-controlled oscillators; 0.18 micron; 1.8 V; 440 to 1595 MHz; 900 MHz; CMOS voltage controlled ring oscillator; VCO; low voltage oscillator; phase noise; two-stage oscillator; wide tuning range; CMOS technology; Circuit optimization; Delay; Frequency; Low voltage; MOS devices; Ring oscillators; Tuning; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412754
