A 27GHz-to-33GHz Variable Gain Amplifier (VGA) is presented. Variable gain control in 0.5dB steps is achieved using two weighted, complementary current-steered cascode devices, which together with the class-AB-biased input devices, provides high input linearity at low power consumption. Centre frequency can also be selectively tuned to adjust for any fabrication tolerance or device-modelling related skew. The circuit is simulated using Global-Foundries 40-nm Low-Power CMOS process technology and consumes 10.77-mA total current from a 1.1-V supply. This VGA achieves 1.2-dB maximum power gain, 7.5-dB gain-control range, +10-dBm IIP3, +2.5-dBm input-1dB compression point and +5-dBm saturated input power.