A 92GHz bandwidth SiGe BiCMOS HBT TIA with less than 6dB noise figure

A low-noise, broadband amplifier with resistive degeneration and transimpedance feedback is reported with 200 mVpp input linearity and less than 6 dB noise figure up to 88 GHz. The measured gain of 13 dB, noise figure, linearity, and group delay variation of ±1.5 ps are in excellent agreement with simulation. Eye diagram measurements were conducted up to 120 Gb/s and a dynamic range larger than 36 dB was obtained from eye diagram measurements at 40 Gb/s. The chip, which includes a 50Ω output buffer, occupies 0.138 mm2 and consumes 21 mA from a 2.3V supply.

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