N. Sharma, Q. Zhong, Z. Chen, W. Choi, J. P. McMillan, C. Neese, R. Schueler, I. Medvedev, F. D. De Lucia, K. O
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200–280GHz CMOS RF front-end of transmitter for rotational spectroscopy
A 200-280 GHz RF front-end of transmitter is demonstrated in 65-nm CMOS. Saturated EIRP is greater than -5dBm over a frequency range of 60GHz. When the input power is -20dBm, EIRP is greater than -10dBm for most of the frequency range, and achieves 3-dB and 6-dB bandwidths of 24% and 33%. The front-end was integrated with a fractional-N synthesizer to form a transmitter operating at 208-255GHz with EIRP of -18 to -11dBm. The transmitter and a CMOS receiver are used for rotational spectroscopy and to detect ethanol in human breath.
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