作者: Jeremy Rode , Tsai-P Hung , Peter M. Asbeck
DOI: 10.1109/MWSYM.2008.4632942
关键词: Electronic engineering 、 ISM band 、 Amplifier 、 Transmitter 、 Direct-coupled amplifier 、 Algorithm 、 Power-added efficiency 、 RF power amplifier 、 CMOS 、 Electrical engineering 、 Delta-sigma modulation 、 Engineering
摘要: This paper presents an all-digital CMOS class-D transmitter system for the 915 MHz ISM band using 802.15.2/ZigBee standards. A novel noise spreading quantization algorithm which derives digitally modulated amplifier input is presented. new requires fewer DSP cycles than delta-sigma approaches, while still maintaining high efficiency and meeting spectral specifications. The entire easy to integrate into modern submicron processes. power achieves a peak drain of 57%, overall DC/Data-to-RF 22%. capable maximum output 18 mW 802.15.2