TY - JOUR
T1 - A Millimeter-Wave CMOS Transceiver with Digitally Pre-Distorted PAM-4 Modulation for Contactless Communications
AU - Kim, Yanghyo
AU - Hu, Boyu
AU - Du, Yuan
AU - Cho, Wei Han
AU - Huang, Rulin
AU - Tang, Adrian
AU - Chen, Huan Neng
AU - Jou, Chewnpu
AU - Cong, Jason
AU - Itoh, Tatsuo
AU - Chang, Mau Chung Frank
N1 - Publisher Copyright:
© 1966-2012 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - This paper presents a millimeter-wave (127 GHz) CMOS transceiver with a digital pre-distortion capable PAM-4 modulator for contactless communications. The transmitter upconverts PAM-4 modulated baseband signals through a free-running 127-GHz oscillator and single-balanced mixer, and it delivers PAM-4 modulated carrier signals to a folded-dipole antenna, which is designed on a FR408HR substrate. The receiver's low-noise amplifier provides a 10-dB gain, and the self-mixer downconverts carrier-modulated PAM-4 signals to baseband signals without the necessity of carrier synchronization. The PAM-4 modulator pre-distorts the baseband signals and corrects the non-linear characteristics of the transmitter's upconversion mixer and the receiver's downconversion self-mixer. Designed and fabricated in a 65-nm CMOS process, the demonstrated system transfers 20 Gb/s of PAM-4 modulated data through a 1-mm air gap and consumes 79.5 mW (transmitter: 50.8 mW and receiver: 28.7 mW) of power under a 1.2-V supply, achieving a 3.98-pJ/bit energy efficiency. The communication distance is extended to 3 cm by inserting a dielectric waveguide between the same transceiver.
AB - This paper presents a millimeter-wave (127 GHz) CMOS transceiver with a digital pre-distortion capable PAM-4 modulator for contactless communications. The transmitter upconverts PAM-4 modulated baseband signals through a free-running 127-GHz oscillator and single-balanced mixer, and it delivers PAM-4 modulated carrier signals to a folded-dipole antenna, which is designed on a FR408HR substrate. The receiver's low-noise amplifier provides a 10-dB gain, and the self-mixer downconverts carrier-modulated PAM-4 signals to baseband signals without the necessity of carrier synchronization. The PAM-4 modulator pre-distorts the baseband signals and corrects the non-linear characteristics of the transmitter's upconversion mixer and the receiver's downconversion self-mixer. Designed and fabricated in a 65-nm CMOS process, the demonstrated system transfers 20 Gb/s of PAM-4 modulated data through a 1-mm air gap and consumes 79.5 mW (transmitter: 50.8 mW and receiver: 28.7 mW) of power under a 1.2-V supply, achieving a 3.98-pJ/bit energy efficiency. The communication distance is extended to 3 cm by inserting a dielectric waveguide between the same transceiver.
KW - Contactless communication
KW - PAM-4
KW - dielectric waveguide
KW - digital pre-distortion (DPD)
KW - impulse response
KW - millimeter-wave transceiver
KW - non-linearity
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U2 - 10.1109/JSSC.2019.2896413
DO - 10.1109/JSSC.2019.2896413
M3 - Article
AN - SCOPUS:85065682350
SN - 0018-9200
VL - 54
SP - 1600
EP - 1612
JO - IEEE Journal of Solid-State Circuits
JF - IEEE Journal of Solid-State Circuits
IS - 6
M1 - 8643728
ER -