Title :
An 8-Bit 140-GHz Power-DAC Cell for IQ Transmitter Arrays with Antenna Segmentation
Author :
Shopov, S. ; Voinigescu, S.P.
Author_Institution :
ECE Dept., Univ. of Toronto, Toronto, ON, Canada
Abstract :
An 8-bit power-DAC cell is demonstrated for the first time at D-band in a production 45-nm SOI CMOS technology. The circuit proves the scalability of the transmitter array architecture with antenna segmentation from the W-band to the D-band. The last two stages of the power-DAC cell employ a novel two-stage common-gate Gilbert-cell topology with series-stacking to directly modulate a 125-144 GHz carrier in phase and in amplitude. The measured gain, saturated output power, and PAE of the power- DAC cell are 14.9 dB, 13.2 dBm, and 2.8%, respectively.
Keywords :
CMOS integrated circuits; UHF antennas; radio transmitters; radiofrequency power amplifiers; silicon-on-insulator; transmitting antennas; D-band; IQ transmitter array architecture scalability; SOI CMOS technology; W-band antenna segmentation; frequency 125 GHz to 144 GHz; power-DAC cell; series stacking; size 45 nm; two-stage common gate Gilbert cell topology; Amplitude shift keying; Binary phase shift keying; CMOS integrated circuits; Computer architecture; Power generation; Transmitters;
Conference_Titel :
Compound Semiconductor Integrated Circuit Symposium (CSICs), 2014 IEEE
Conference_Location :
La Jolla, CA
DOI :
10.1109/CSICS.2014.6978539
