THz Pulse Radiation with GHz Repetition Rate in Silicon

In this paper, we report a single-chip array of THz pulse radiators with the ability to produce and radiate 5.4psec pulses. Elements of a 2x4 array radiate the picosecond pulses coherently with a jitter of 270fsec. Picosecond pulse radiation is achieved using a fully electronic laser-free scheme based on the technique of Direct-digital-to-Impulse (D2I) radiation. The chip is fabricated in 90nm SiGe BiCMOS process technology