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This letter presents a millimeter-wave 90 nm CMOS divide-by-four frequency divider using self-mixing technique. The output of the push-push oscillator mixes with the input signal, and the resulting intermediate frequency signal locks the fundamental oscillation frequency of the oscillator at exactly one-fourth of the input signal frequency. The frequency divider is implemented in TSMC 90 nm 1P9M digital...
This paper presents a low power wide tuning range 0.18 mum CMOS voltage-controlled oscillator. The VCO is oscillating at 1.5 times of the LO frequency to reduce the size of tank inductor. Capacitor bank switching is adopted to increase the VCO tuning range. To ensure oscillation at low frequency band, the bias current is adjusted automatically with respect to oscillation frequency. The frequency coverage...
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