For RFtransmitter circuits, the efficiency is largely determined by the efficiency of the power amp (always abbreviated as "PA" in RF discussions).
对RF发送器来讲效率主要由功放(PA)的效率决定。
2
Based on the National Hi-Tech Research and Development Program (863), this project studies a novel high efficiency and linearity front-end of RFtransmitter.
本课题是基于国家高技术研究发展计划(863)项目，研究新型高效率高线性射频发射前端。
3
The results of simulation show that antenna selection of transmitter not only can increase capacity, but can also reduce complexity and cost of RF chains for given channels.