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本文提出了一种面向超5G通信的G波段次谐波相位调制发射机，采用时不变相位三倍频架构和分段9位数字-相位转换器（DTPC），实现直接QAM合成。该发射机在G波段支持16/64/256QAM调制，峰值数据速率达51.2 Gbps，有效解决了高频段高数据速率传输的挑战。
Angeles, CA, 3NXP Semiconductors, San Jose, CA. 1 Abstract This paper presents a highly integrated G-band digital transmitter for beyond-5G communications featuring: 1) a subharmonic phase-modulating architecture with timeinvariant phase tripling, 2) a GS/s segmented 9-bit digital-to-phase converter (DTPC) with a sub-degree rms error, and 3) a carrier-saturating and multiplying chain for direct QAM synthesis. It achieves 51.2Gbps/16QAM, 24Gbps/64QAM, and 8Gbps/256QAM with -2dBm peak output power while consuming 280-to-350mW DC power. Sub-THz spectra, particularly at G-band and above, offer much increased bandwidth for beyond-5G (B5G) wireless communications. However, existing analog upconverting transmitters (TX) remain insufficient for achieving desired data rate and spectrum/energy
Jia Zhou1, Jieqiong Du1, Chao-Jen Tien1, Jhih-Wei Chen1, Ruei-Chen Soong1, Francisco Cardenas Beltran1, Lachlan Cuskelly1, Christopher Chen1, Minji Zhu1,
Adrian Tang1,2, Sai-Wang Tam3, Mau-Chung Frank Chang1 University of California, Los Angeles, CA, 2California Institute of Technology, Los