A 258-GHz CMOS transmitter with phase-shifting architecture for phased-array systems
T Hagiwara, N Yamaki, K Sekine… - 2021 IEEE MTT-S …, 2021 - ieeexplore.ieee.org
2021 IEEE MTT-S International Microwave Symposium (IMS), 2021•ieeexplore.ieee.org
This paper presents a 258-GHz CMOS transmitter with phase-shifting capability for phased-
array systems targeting sixth-generation mobile network (6G). Phase shifters are inserted in
local oscillator (LO) paths to limit the bandwidth required of the phase shifters. A power
detector is used to detect and calibrate the phase difference between a pair of phase shifters
in the two power-combined paths of the transmitter. It is fabricated using a 40-nm CMOS
technology. A data rate of 16 Gb/s and output power of− 6.8 dBm are achieved with …
array systems targeting sixth-generation mobile network (6G). Phase shifters are inserted in
local oscillator (LO) paths to limit the bandwidth required of the phase shifters. A power
detector is used to detect and calibrate the phase difference between a pair of phase shifters
in the two power-combined paths of the transmitter. It is fabricated using a 40-nm CMOS
technology. A data rate of 16 Gb/s and output power of− 6.8 dBm are achieved with …
This paper presents a 258-GHz CMOS transmitter with phase-shifting capability for phased-array systems targeting sixth-generation mobile network (6G). Phase shifters are inserted in local oscillator (LO) paths to limit the bandwidth required of the phase shifters. A power detector is used to detect and calibrate the phase difference between a pair of phase shifters in the two power-combined paths of the transmitter. It is fabricated using a 40-nm CMOS technology. A data rate of 16 Gb/s and output power of −6.8 dBm are achieved with quaternary phase-shift keying (QPSK). The calibration procedure of the phase shifters is verified by simulation.
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