An LTE-A Multimode Multiband RF Transceiver with 4RX/2TX Inter-Band Carrier Aggregation, 2-Carrier 4×4 MIMO with 256QAM and HPUE Capability in 28nm CMOS. - Chih-Chun Tang; Yi-Bin Lee; Chih-hao Eric Sun; Cheng-Chieh Lin; Jin-Siang Syu; Min-Hua Wu; YangChuan Chen; Tzu-Chan Chueh; Carl Bryant; Manel Collados; Mohammed Hassan; João Ramos; et al. (ISSCC, 2019)