Title :
A CMOS Dual-Band Voltage Controlled Oscillator
Author :
Jang, S.-L. ; Chuang, Y.-H. ; Chen, C.-C. ; Lee, S.-H. ; Lee, J.-F.
Author_Institution :
Dept. of Electron. Eng., National Taiwan Univ. of Sci. & Technol., Taipei
Abstract :
A new fully integrated, dual-band voltage controlled oscillator (VCO) is presented. The VCO is implemented in 0.18mum CMOS technology with 1.8V supply voltage. The circuit allows the VCO to operate at two resonant frequencies with two LC tanks. This VCO is configured with 2.4 GHz and 4.8 GHz frequency bands with differential outputs. The dual-band VCO operates at 2.15GHz ~ 2.75GHz and 4.75GHz ~ 4.99GHz. The measured phase-noise performances of a dual band VCO are 121.45 and 118.49 dBc/Hz at 1 MHz offset at the frequencies of 2.4 and 4.8 GHz, respectively, while drawing 3.88 mA and 3.1 mA from a 1.8V supply
Keywords :
CMOS analogue integrated circuits; MMIC oscillators; UHF oscillators; voltage-controlled oscillators; 0.18 micron; 1.8 V; 2.4 GHz; 3.1 mA; 3.88 mA; 4.8 GHz; CMOS technology; LC tanks; differential output; dual band VCO; dual-band voltage controlled oscillator; CMOS technology; Dual band; Frequency measurement; Integrated circuit technology; Performance evaluation; Phase measurement; RLC circuits; Resonant frequency; Voltage; Voltage-controlled oscillators; CMOS; VCO; dual band;
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342521
