A 0.380-THz frequency quadrupler based on Constructive Wave Oscillator in 130-nm SiGe BiCMOS

The first Constructive Wave Oscillator (CWO) based frequency quadrupler has been demonstrated in 130-nm SiGe BiCMOS. Proposed architecture efficiently generates a 0.380 THz signal using a strong fundamental CWO operating at W-band. Eight-section CWO produces 95 GHz signals that are distributed along the ring with 45 degree phases. Frequency quadrupler combines the signals from the CWO, fo, and produces a signal at 4fo. The frequency quadrupler circuit dissipates 76 mW of DC power from 2V supply. The CWO based frequency quadrupler operating at 380 GHz has a -28 dBm output power into 50 ohms load with a phase noise of -85 dBc per Hz at 1 MHz offset.