Title :
A 5GHz band low noise and wide tuning range Si-CMOS VCO
Author :
Tuan Thanh Ta ; Kameda, Suguru ; Takagi, Tadashi ; Tsubouchi, Kazuo
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
In this work, a fully integrated 5 GHz Voltage Controlled Oscillator (VCO) is presented. The VCO is designed with 0.18 mum mixed signal Complementary Metal Oxide Semiconductor (CMOS) process of Taiwan Semiconductor Manufactuning Company (TSMC), Limited. To achieve low phase noise, a varactor circuit is designed to cancel effects of 1/f noise and fluctuation of capacitance due to harmonics. The proposed VCO has tuning range from 5.1 GHz to 6.1 GHz (17.9%) and phase noise of lower than -110.8 dBc/Hz at 1MHz offset over the full tuning range. Figure-of-merit-with-tuning-range (FOMT) of the proposed VCO is -182dBc/Hz.
Keywords :
CMOS integrated circuits; field effect MIMIC; mixed analogue-digital integrated circuits; varactors; voltage-controlled oscillators; 1/f noise; Si; complementary metal oxide semiconductor; frequency 1 MHz; frequency 5.1 GHz to 6.1 GHz; low noise VCO; mixed signal CMOS; size 0.18 mum; varactor circuit; voltage controlled oscillator; wide tuning range; CMOS process; Circuit optimization; Noise cancellation; Phase noise; Semiconductor device noise; Signal design; Signal processing; Tuning; Varactors; Voltage-controlled oscillators; 5GHz; CMOS; VCO; low noise; wide tuning range;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3377-3
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2009.5135606
