A low phase noise, small power dissipation and small sized Ka-band Triple Push Coupled Pair using 0.18 μm CMOS technology is described. The VCO operated can be tuned between 37.3 GHz and 40.1 GHz and has low phase noise of -107 dBc/Hz at a 1 MHz offset. The Figure of merit (FOM) is -184.8 dBc/Hz and the power-frequency tuning-normalized figure-of-merit (PFTN) is -11.8 dB. The power consumption of the VCO was 24.9 mW with only 0.52 mm² chip area.