A Sub-THz Full-Duplex Phased-Array Transceiver with Self-Interference Cancellation and LO Feedthrough Suppression

Wang, Chun; Abdo, Ibrahim; Liu, Chenxin; Gomez, Carrel da; Herdian, Hans; Wang, Wenqian; Fu, Xi; You, Dongwon; Shehata, Andrea Bahgat; Park, Sung-Hwan; Wang, Yun; Pang, Jian; Sakai, Hiroto; Shirane, Atsushi; Okada, Kei

doi:10.23919/vlsitechnologyandcir57934.2023.10185423

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2024

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Sub-THz CMOS Phased-Array Transceiver Design for 6G

Okada

2024

2024 IEEE International Symposium on Circuits and Systems (ISCAS)

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Sub-THz CMOS Phased-Array Transceiver Design for 6G

Okada

2024

2024 IEEE International Symposium on Circuits and Systems (ISCAS)

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A Sub-THz Full-Duplex Phased-Array Transceiver With Self-Interference Cancellation and LO Feedthrough Suppression

Wang,

Abdo,

Liu

et al. 2024

IEEE J. Solid-State Circuits

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A sub-THz (88-136 GHz) full-duplex (FD) phasedarray transceiver (TRX) integrating an RF self-interference (SI) canceller with differential feeding FD antennas is presented in this work. The LO phase generation chain controls differential transmitter outputs for the phased-array operation. The differential feeding FD antenna with differential pairs of chips achieves over 35-dB SI suppression. The SI suppression is improved by 20 dB when the SI canceller is turned on. Without any digital-domain SI cancellation (SIC), a total SI suppression of >60 dB is achieved over a 2-GHz bandwidth. The proposed neutralized mixer with over 20-dB LO feedthrough suppression and wideband RF amplifiers support a large data rate at sub-THz frequencies. This is the world's first demonstrated sub-THz FD phased-array TRX. In the over-the-air (OTA) measurements for FD mode, the proposed FD TRX achieves 6 Gb/s in 8PSK and 4 Gb/s in 16QAM. It also achieves a 112-Gb/s data rate for OTA TX-to-RX.

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A Sub-THz Full-Duplex Phased-Array Transceiver with Self-Interference Cancellation and LO Feedthrough Suppression

Cited by 2 publications

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Sub-THz CMOS Phased-Array Transceiver Design for 6G

Sub-THz CMOS Phased-Array Transceiver Design for 6G

A Sub-THz Full-Duplex Phased-Array Transceiver With Self-Interference Cancellation and LO Feedthrough Suppression

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