A High Speed OOK Modulator at 300 GHz using LO Cancellation Technique

This paper presents a high speed On-Off Keying (OOK) modulator for future terahertz communication using local oscillator (LO) cancellation technique. Post layout full-wave EM simulation results are performed up to 25 Gbps data-rate. The circuit is implemented in 250nm InP HBT technology. The modulator output at OFF position is 30% to its output at ON position. The proposed modulator design consumes power up to 53 mW and occupies active chip area of 0.01 mm².