A 5-GHZ Low-Power Series-Coupled BiCMOS Quadrature VCO With Wide Tuning Range |
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Authors: | Kakani V. Fa Foster Dai Jaeger R.C. |
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Affiliation: | Dept. of Electr. & Comput. Eng., Auburn Univ., AL; |
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Abstract: | This letter presents a novel quadrature voltage controlled oscillator (QVCO) implemented in a 47-GHz SiGe BiCMOS technology. The QVCO is a serially coupled LC VCO that utilizes SiGe heterojunction bipolar transistors for oscillation and metal oxide semiconductor field effect transistors for coupling. The SiGe BiCMOS QVCO prototype achieves about 14.6% tuning range from 4.3 to 5GHz. The phase noise of the QVCO is measured as -114.3 dBc/Hz at 2-MHz offset. The 5-GHz QVCO core consumes 6-mA current from a 3.3-V power supply and occupies 0.88mm2 area |
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