A Low Voltage Quadrature VCO Implemented With Series Frequency Doublers

作者：Jang Sheng Lyang^*; Lee Tai Sung; Hsue Ching Wen; Liu Cheng Chen

来源：IEEE Microwave and Wireless Components Letters, 2009, 19(12): 819-821.

DOI：10.1109/LMWC.2009.2033527

• Bottom-series coupled quadrature voltage-controlled oscillator (QVCO)
• CMOS
• frequency doublers
• transformers

Using the transformer coupling technique, this letter presents a new quadrature voltage-controlled oscillator (QVCO) with bottom series-coupled transistors. The proposed CMOS QVCO has been implemented with the TSMC 0.13 mu m 1P8M CMOS process, and the die area is 1.03 x 0.914 mm(2). At the supply voltage of 1.0 V, the total power consumption is 3.56 mW. The free-running frequency of the QVCO is tunable from 5.43 GHz to 5.92 GHz as the tuning voltage is varied from 0.0 V to 1.0 V. The measured phase noise at 1 MHz frequency offset is -117.98 dBc/Hz at the oscillation frequency of 5.5 GHz and the figure of merit (FOM) of the proposed QVCO is -187.27 dBc/Hz.

• 出版日期2009-12