A 45 GHz SiGe active frequency multiplier

A frequency quadrupler for frequencies up to 45 GHz uses a pre-production 0.4 /spl mu/m SiGe bipolar technology. Gain is achieved at -15 dBm input power between 24 and 45 GHz with maximum of 7.3 dB at 44 GHz. The circuit draws 84 mA from a single 5 V supply.