abstract:A new low-power 27.07-GHz voltage controlled oscillator is designed for Ka-band applications in this article. Body bias technique is used for the low-power and low-phase noise VCO design. The VCO can be tuned from 26.35 to 27.102 GHz. The measured phase noise is −106.2 dBc/Hz at 1 MHz offset from the carrier frequency. The corresponding figure-of-merit (FOM) is calculated to be −183.2 dBc/Hz. The VCO is implemented with the TSMC 0.18 μm one-poly-six-metal 1.5 V mixed signal/RF CMOS technology. The chip size is 0.565 × 0.69 mm2.