A 5GHz CMOS VCO for IEEE 802.11a WLAN application

作者：Zhang Li^*; Wang Zhihua; Chen Hongyi

来源：Chinese Journal of Electronics, 2007, 16(1): 66-68.

• phase noise
• spiral inductor
• VCO (voltage controlled oscillator)
• WLAN (wireless local area networks)

A fully-monolithic 5GHz CMOS LC-VCO (LC-Voltage controlled oscillator) fabricated in 0.25 mu m 1P5M CMOS technology is presented in this paper. The tuning range of the VCO (Voltage controlled oscillator) is from 4.82GHz to 6.288GHz, about 26.4%. The measured phase noise at 4.82GHz is -119dBc/Hz at 1MHz offset from the carrier. It meets the requirements for IEEE 802.11a WLAN standard. The current dissipation of the VCO is 4.92mA from the 2.5V power supply. In this paper, the onchip two-turn octagon spiral inductor and on-chip bias-Ts are presented.

• 出版日期2007-1
• 单位清华大学