Abstract
A fully integrated push-push voltage controlled oscillator (VCO) with simultaneous differential fundamental output is realized using an advanced 0.13/spl mu/m SiGe HBT process. A maximum oscillation frequency of 155 GHz, up to -5 dBm output power at 150 GHz and 30 GHz wide tuning range is achieved. The measured phase-noise in the linear tuning range is around -85 dBc/Hz at 1 MHz offset from carrier. Up to +3 dBm output power and 6 dB lower phase noise is obtained at each of the fundamental frequency differential ports. For a similar but fixed frequency oscillator, -2 dBm output power and a low phase noise of less than -90 dBc/Hz is measured at 1 MHz from the 140 GHz carrier.
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