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A 28 nm CMOS Dual-Band Concurrent WLAN and Narrow Band Transmitter With On-Chip
提出一种28nm CMOS双频并发WLAN和窄带发射机，采用片上干扰消除技术提升IoT设备性能。
28nm CMOS, IMD3降低25dB, 并发输出功率提升至17dBm
双频发射机WLAN窄带通信干扰消除IoT设备
▸片上前馈TX-to-TX干扰消除路径
▸基于空口通道的IMD3校准引擎
▸支持双频并发传输的高功率架构
Abstract
A dual-band, concurrent 2.4G wireless local-area
network (WLAN) and 2.4G narrow band (NB) transmitter (TX)
with on-chip feedforward TX-to-TX interference cancellation
path for low antenna-to-antenna isolation in internet of things
(IoT) devices is proposed. The on-chip cancellation path generates
a replica signal of the same magnitude but 180 ◦ out-of-phase with
respect to the “aggressor” TX signal appearing at the “victim”
TX output. An on-chip third-order intermodulation distortion
(IMD3) cali