A 15/30-GHz dual-band multiphase voltage-controlled oscillator in 0.18-mu m CMOS

作者：Hsieh Hsieh Hung^*; Hsu Ying Chih; Lu Liang Hung

来源：IEEE Transactions on Microwave Theory and Techniques, 2007, 55(3): 474-483.

DOI：10.1109/TMTT.2006.890518

• coplanar striplines (CPSs)
• frequency doublers
• half-quadrature output phases
• rotary traveling-wave oscillators

A multiphase oscillator suitable for 15/30-GHz dual-band applications is presented. In the circuit implementation, the 15-GHz half-quadrature voltage-controlled oscillator (VCO) is realized by a rotary traveling-wave oscillator, while frequency doublers are adopted to generate the quadrature output signals at the 30-GHz frequency band. The proposed circuit is fabricated in a standard 0.18-mu m CMOS process with a chip area of 1.1 x 1.0 mm(2). Operated at a 2-V supply voltage, the VCO core consumes a do power of 52 mW. With a frequency tuning range of 250 MHz, the 15-GHz half-quadrature VCO exhibits an output power of -8 dBm and a phase noise of -112 dBc/Hz at 1-MHz offset frequency. The measured power level and phase noise of the 30-GHz quadrature outputs are -16 dBm and -104 dBc/Hz, respectively.

• 出版日期2007-3
• 单位中国科学院电工研究所