標題: A 20MS/s Buck/Boost Supply Modulator for Envelope Tracking Applications with Direct Digital Interface
作者: Yang, Shang-Hsien
Wey, Chin-Long
Chen, Ke-Horng
Lin, Ying-Hsi
Chen, Jing-Jia
Tsai, Tsung-Yen
Lee, Chao-Cheng
交大名義發表
National Chiao Tung University
關鍵字: Supply modulator;envelope tracking;non-inverting buck/boost converter
公開日期: 2014
摘要: a buck/boost supply modulator (BBSM) is proposed for 4G LTE RF power amplifier (RF-PA) envelope tracking applications. The H-bridges used in non-inverting buck/boost converters are metamorphosed into the current sources and switches of a 4-bit current-steering DAC-like supply modulator. Fast tracking speed is achieved through its inherent open-loop topology, while the direct digital interface provides easy control and integration with digital LTE baseband SoCs. The proposed BBSM is capable of delivering peak power of 2.8W at 20MS/s, with a peak efficiency of 75 %.
URI: http://hdl.handle.net/11536/135864
ISBN: 978-1-4799-4089-9
期刊: 2014 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC)
起始頁: 73
結束頁: 76
Appears in Collections:Conferences Paper