A Millimeter-Wave CMOS Transceiver With Digitally Pre-Distorted PAM-4 Modulation for Contactless Communications
A Millimeter-Wave CMOS Transceiver With Digitally Pre-Distorted PAM-4 Modulation for Contactless Communications
复制标题
用于非接触式通信的具有数字预失真 PAM-4 调制的毫米波 CMOS 收发器
DOI：
10.1109/jssc.2019.2896413
复制
发表时间：
2019
影响因子：
5.4
通讯作者：
Mau
中科院分区：
文献类型：
--
作者：
Yanghyo Kim;B. Hu;Yuan Du;Wei;R. Huang;A. Tang;H. Chen;C. Jou;J. Cong;T. Itoh;Mau
本文提出了一种毫米波（127 GHz） CMOS收发器，具有数字预失真功能的PAM-4调制器，用于非接触式通信。该发射机通过一个自由运行的127 ghz振荡器和单平衡混频器对PAM-4调制基带信号进行上变频，并将PAM-4调制载波信号传送到FR408HR衬底上设计的折叠偶极子天线。接收机的低噪声放大器提供10db增益，自混频器将载波调制的PAM-4信号下变频为基带信号，而无需载波同步。PAM-4调制器对基带信号进行预失真，校正发射机上变频混频器和接收机下变频自混频器的非线性特性。该系统采用65纳米CMOS工艺设计和制造，通过1毫米的气隙传输20 Gb/s的PAM-4调制数据，在1.2 v电源下消耗79.5 mW（发射器：50.8 mW，接收器：28.7 mW）的功率，实现3.98 pj /bit的能量效率。通过在同一收发器之间插入介质波导，将通信距离延长到3cm。
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.