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1. 发明授权

US07132874B2 Linearizing apparatus and method 有权
标题翻译：线性化装置和方法
公开(公告)号：US07132874B2
公开(公告)日：2006-11-07
申请号：US10829575
申请日：2004-04-22
申请人： Michael S. McCorquodale , Richard B. Brown , Mei Kim Ding
发明人： Michael S. McCorquodale , Richard B. Brown , Mei Kim Ding
IPC分类号： G06F7/556
CPC分类号： G06G7/122
摘要： An apparatus and method are disclosed which provide a substantially linear relationship between an input signal, such as an input voltage or current, and a predetermined parameter, such as a frequency response or capacitance of a parallel plate capacitor or varactor. The apparatus comprises a square root converter and a logarithmic generator. The square root converter is adapted to provide a square root signal which is substantially proportional to a square root of the input signal. In the various embodiments, the logarithmic generator is adapted to provide an applied signal which is substantially proportional to a sum of a logarithm of the input signal plus the square root of the input signal. The applied signal is a pre-distorted signal which generally has a non-linear relation to the predetermined parameter and which, when applied, allows the predetermined parameter to vary substantially linearly with the input signal.
摘要翻译：公开了一种在输入信号（例如输入电压或电流）与预定参数（诸如平行板电容器或变容二极管的频率响应或电容）之间提供基本线性关系的装置和方法。该装置包括平方根转换器和对数发生器。平方根转换器适于提供与输入信号的平方根成正比的平方根信号。在各种实施例中，对数发生器适于提供基本上与输入信号的对数加上输入信号的平方根的和成正比的施加信号。施加的信号是预失真信号，其通常与预定参数具有非线性关系，并且当被施加时，允许预定参数与输入信号基本上线性地变化。

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