A 19.3-to-27.3GHz Area-Reuse Double Dual-Core Complementary Class-F-1 VCO with Non-Interfering Multiple Resonances Achieving 203.3dBc/Hz FoMT and 213.3dBc/Hz FoMTA

In this paper, an area-reuse double dual-core complementary Class-F-1 VCO with non-interfering multiple resonances is proposed, which achieves wide FTR, high FoM, and compact chip area, simultaneously. The area-reuse technique with non-interfering multiple resonances ensures the independent operation of double dual-core oscillator, thus broadening the frequency range with a miniaturized chip size. Besides, the proposed oscillator has large 2nd harmonic impedance which effectively shapes the waveforms for the phase noise reduction. Prototyped in a 40nm CMOS technology, the VCO has a 34.3% FTR from 19.3 to 27.3GHz. The peak performance exhibits 192.6dBc/Hz FoM, 203.3dBc/Hz FoMT, 202.6dBc/Hz FoMA, and 213.3dBc/Hz FoMTA at 10MHz offset. The variation of FoM at 10MHz offset is within than 0.7dBc/Hz, exhibiting a good performance consistency in the wideband range.