Title :
High speed and wide tuning range voltage-controlled ring oscillator in 0.18µm CMOS
Author :
Yu-Sheng Tiao ; Sheu, Meng-Lieh ; Tsao, Lin-Jie
Author_Institution :
Dept. of Electr. Eng., Nat. Chi-Nan Univ., Nantou Hsien, Taiwan
Abstract :
A differential delay cell with complementary current control to extend the control voltage range as well as the operation frequency is proposed for high speed and wide tuning range voltage-controlled ring oscillator (VCRO). The complementary current control mitigates the restriction that control voltage can not operate at full range in a conventional VCRO. A three-stage VCRO is constructed for verifying the proposed differential delay cell. The VCRO is implemented using 0.18-μm 1P6M CMOS process and 1.8V supply voltage. Measured results show that a wide operation frequency range from 8.36GHz to 1.29GHz is achieved for the full range control voltage from 0V to 1.8V. The measured phase noise is -105.59dBc/Hz at 1MHz offset from the 8.35GHz centre frequency and a figure of merit (FOM) is -165.3 dBc/Hz. The core area is 106μm×76.2μm.
Keywords :
CMOS integrated circuits; oscillators; voltage control; CMOS; VCRO; centre frequency; complementary current control; differential delay cell; figure of merit; high speed tuning range; measured phase noise; voltage 0 V to 1.8 V; voltage controlled ring oscillator; wide tuning range; CMOS integrated circuits; CMOS technology; Delay; K-band; Tuning; Voltage control; Voltage measurement;
Conference_Titel :
Next-Generation Electronics (ISNE), 2010 International Symposium on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4244-6693-1
DOI :
10.1109/ISNE.2010.5669187
