A SECOND HARMONIC SUPPRESSION CMOS CROSS-COUPLED VCO USING ACTIVE INDUCTOR TECHNIQUE FOR WLAN SYSTEM APPLICATIONS

作者：Li J Y; Lin W J; Houng M P^*; Chen L S

来源：Journal of Electromagnetic Waves and Applications, 2010, 24(14-15): 2077-2086.

In this paper, a low phase-noise CMOS cross-coupled voltage-controlled oscillator (VCO) using an active inductor for wireless local area network (WLAN) applications is presented. The proposed VCO achieves low phase-noise by using the active inductor to suppress the second harmonic (2 omega(0)) of LC tank. The VCO achieves -125.8 dBc/Hz phase-noise at 1 MHz offset from the 2.33 GHz carrier frequency, and frequency tuning range is about 25% from 2.01 to 2.62 GHz. This VCO consumes 2.3 mA from a 1.8 V supply with chip area of 0.75 x 0.64 mm(2).

• 出版日期2010