Event driven analog modeling of RF frontends
Event driven analog modeling of RF frontends
复制标题
RF 前端的事件驱动模拟建模
DOI：
10.1109/bmas.2007.4437523
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Heinen
中科院分区：
文献类型：
--
作者：
S. Joeres;Hans;S. Heinen
建模语言VerilogAMS支持新的双精度数据类型（wreal），可在数字仿真领域实现模拟精度。因此，可以将高频信号路径（如RF前端中的信号路径）与芯片的其余部分分离，这对于快速验证目的非常方便。在介绍了模拟和数字建模之后，提出了一种用于蓝牙收发器系统的RF和LO信号流路径的建模策略。重点分析了通过线电转换引入的非均匀过采样，并与传统的均匀采样率进行了比较。所提出的方法被证明是一个工业可用的RF前端，包括偏置和模数转换。最后对前端的不同复杂度和通带、基带、晶体管级等不同建模方法进行了仿真比较。
The modeling language VerilogAMS supports a new double precision datatype (wreal) that enables analog accuracy in the digital simulation domain. It is therefore possible to separate high frequency signal paths, like those in RF frontends, from the rest of the chip, which comes in very handy for fast verification purposes. After an introduction to analog and digital modeling, a strategy to model the RF and LO signal flow path for a bluetooth transceiver system is presented. Especially the nonuniform oversampling, which is introduced through wreal to electrical and vice versa conversion, is analyzed and compared to traditional uniform sampling ratios. The proposed approach is demonstrated for an industrial available RF frontend, including biasing and analog to digital conversion. Simulation comparisons for different complexities of the frontend and different modeling approaches like passband, baseband and transistor level conclude the paper.