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本文提出一种混合开关电源调制器，实现130MHz包络跟踪带宽和10W输出功率，适用于2G/3G/LTE/NR移动通信系统，解决了宽带和高功率需求问题。
Young-Ho Jung, Jaeyeol Han, Ik-Hwan Kim, Sung-Youb Jung, Takahiro Nomiyama, Ji-Seon Paek, Jongwoo Lee, Thomas Byunghak Cho Samsung Electronics, Hwasung, Korea Envelope tracking (ET) is a key technology improving efficiency of RF power amplifiers (PAs) and battery lifetime in mobile handsets. It has been commercialized since 4G LTE era, and is also being employed in 5G NR handsets. A supply modulator (SM) is a circuit generating power supplies of RF PAs for ET and average power tracking (APT) operations. Currently, the maximum channel BW and supported ET BW of 5G NR handset is 100MHz [1-4]. In a short time, over 100MHz BW will be necessary to support intra-band contiguous carrier aggregation cases of n77C/n78C/n79C in 3GPP standard
Dongsu Kim, Jun-Suk Bang, Jongbeom Baek, Seungchan Park,