A novel circuit topology suitable for the implementation of CMOS voltage-controlled-oscillator (VCO) fabricated in TSMC 0.18-mu m has been presented in this paper. While current-reused structure can save dc power consumption dynamically, and measured dc power consumption at 1.2 V is about 0.9 mW. The measurement results exhibit a frequency tuning range of 140 MHz in the vicinity of 5.4 GHz. For high output level, we utilize the cascode structure to increase output swing and excite output power to -2.06 dBm at buffer. The measured phase noise at 1 MHz and DC current are -112.7 dBc/Hz and 0.75 mA, respectively. The result evaluated by means of a figure of merit is about -188 dBc/Hz.
|Title of host publication||2010 ASIA-PACIFIC MICROWAVE CONFERENCE|
|State||Published - 2010|
|Event||22nd Asia-Pacific Microwave Conference (APMC) - Yokohama, Japan|
Duration: 7 Dec 2010 → 10 Dec 2010
|Name|| Asia Pacific Microwave Conference-Proceedings|
|Conference||22nd Asia-Pacific Microwave Conference (APMC)|
|Period||7/12/10 → 10/12/10|