24GHz 1.89mW 12x CMOS frequency multiplier using pulse-injected oscillator

Pseudo-millimeter-wave 12 times CMOS frequency multiplier has been proposed, which is attractive to overcome the drawback of using PLL circuit in the point of large power consumption and large chip area. To realize pseudo-millimeter-wave UWB communication, early work has been improved to overcome the limitation of operating speed. Short pulse injection and nonlinearity of PMOSFET have been used for injection locking. The circuit was fabricated by 90 nm 1P6M CMOS process. The core size of the chip is 5 mumtimes7 mum including output buffer. The output phase noise is -92 dBc/Hz at 1 MHz offset. The locking ranges are 6.15% and 9.82% at the supply voltage of 1 V and 0.9 V, respectively. Power consumptions (without buffer) are 1.89 mW (1.38 mW) and 1.39 mW (0.97 mW) in each supply voltage.