A 20 Gbit/s, 280 GHz wireless transmission in InPHEMT based receiver module using flip-chip assembly

In this paper, 20 Gbit/s, carrier frequency of a 280 GHz transmitter MMIC and a receiver module using a flip-chip assembly technique are described. The transmitter MMIC is comprised of an ON/OFF modulator and multi-stage amplifiers. The measured ON/OFF ratio in the 280 GHz frequency band is 15 dB. The LNA based on 75-nm InP-HEMT shows the small signal gain of more than 27 dB in the band, and the NF of 9.8 dB at 300 GHz. The detector for the ON/OFF keying (OOK) with a baseband amplifier has achieved the sensitivity of about 2.5 V/mW. The fabricated receiver MMIC is mounted on the module in the flip-chip assembly technique. The sensitivity of the receiver module is around 400 V/mW. The waveforms have clear eye openings, when the data transmission rates are 10 Gb/s and 20 Gb/s.

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