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CMOS 45 GHz vector modulator with gain/phase correction through calibration

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4 Author(s)
Juntunen, E. ; Peraso Technol., Inc., Toronto, ON, Canada ; Dawn, D. ; Laskar, J. ; Papapolymerou, J.

A 45 GHz vector modulator designed in 45 nm SOI CMOS is presented along with an open-loop calibration technique for gain/phase correction. The continuous 360° vector modulator consists of a passive quadrature signal generation network followed by a Gilbert cell modulator. The simple, open-loop calibration procedure results in RMS gain and phase errors less than 0.5 dB and 5°, respectively. The circuit consumes 18 mW of DC power from a 1 V supply.

Published in:

Electronics Letters  (Volume:49 ,  Issue: 4 )