A Broadband Switched-Transformer Digital Power Amplifier for Deep Back-Off Efficiency Enhancement. - Yun Yin; Tong Li; Liang Xiong; Yicheng Li 002; Hao Min; Na Yan; Hongtao Xu (IEEE J. Solid State Circuits, 2020)

A 15-Bit Quadrature Digital Power Amplifier With Transformer-Based Complex-Domain Efficiency Enhancement. - Yicheng Li 002; Yun Yin; Diyang Zheng; Xianglong Jia; Jie Lin; Fu Gao; Yiting Zhu; Liang Xiong; Na Yan; Ye Lu 005; Hongtao Xu (IEEE J. Solid State Circuits, 2022)

A 0.7-to-2.5GHz Sliding Digital-IF Quadrature Digital Transmitter Achieving >40% System Efficiency for Multi-Mode NB-IoT/BLE Applications. - Chunxiao Hu; Diyang Zheng; Yun Yin; Jie Lin; Yicheng Li 002; Wei Li 038; Hongtao Xu (ISSCC, 2023)

A 4.1 W Quadrature Doherty Digital Power Amplifier with 33.6% Peak PAE in 28nm Bulk CMOS. - Jiaxiang Li; Yun Yin; Hang Chen; Jie Lin; Yicheng Li 002; Xianglong Jia; Zhen Hu; Xiuyin Zhang; Hongtao Xu (ISSCC, 2023)

A Transformer-Based Quadrature Doherty Digital Power Amplifier With 4.1 W Peak Power in 28 nm Bulk CMOS. - Jiaxiang Li; Yun Yin; Hang Chen; Jie Lin; Yicheng Li 002; Xianglong Jia; Zhen Hu; Ziyu Liu; Xiuyin Zhang; Hongtao Xu (IEEE J. Solid State Circuits, 2023)

A Wideband Sliding Digital-IF Quadrature Digital Transmitter for Multimode NB-IoT/BLE Applications. - Chunxiao Hu; Diyang Zheng; Yun Yin; Jie Lin; Yicheng Li 002; Wei Li 038; Hongtao Xu (IEEE J. Solid State Circuits, 2024)

A Quadrature Digital Power Amplifier With Wide Efficiency Enhancement Coverage and High Dynamic Power Range. - Yicheng Li 002; Yun Yin; Diyang Zheng; Fu Gao; Jie Lin; Zhen Hu; Ye Lu 005; Hongtao Xu (IEEE J. Solid State Circuits, 2024)

Nonlinear Analysis of Quadrature Switched-Capacitor Power Amplifier and Digital Predistortion. - Fu Gao; Luyi Guo; Yicheng Li 002; Yun Yin; Hongtao Xu (IEEE Trans. Circuits Syst. I Regul. Pap., 2024)

Linearization of Quadrature Digital Power Amplifiers by Neural Network of ULR_LSTM: Unsupervised Learning Residual LSTM. - Jiayu Yang; Luyi Guo; Yicheng Li 002; Wang Wang; Zixu Li; Manni Li; Zijian Huang 017; Yinyin Lin; Yun Yin; Hongtao Xu (DATE, 2025)

Digital Predistortion for Quadrature Digital Power Amplifiers Using Deep Neural Network of AT_LSTM: Attention LSTM. - Jiayu Yang; Wending Zhao; Yicheng Li 002; Wang Wang; Zixu Li; Manni Li; Zijian Huang 017; Yinyin Lin; Yun Yin; Hongtao Xu (ACM Great Lakes Symposium on VLSI, 2025)