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Methods and apparatus for measuring relative gain and phase of voltage input signals versus voltage output signals
Methods and apparatus for measuring relative gain and phase of voltage input signals versus voltage output signals
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机译:测量电压输入信号相对于电压输出信号的相对增益和相位的方法和装置
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摘要
A system for accurately measuring frequency response (phase and gain) in either a wireless or in a wired mode of operation is described. When used in either mode, a multiplexing method is employed which allows the use of a narrow channel bandwidth, with a simultaneous improvement in overall accuracy. Cancellation of all linear and time invariant errors, including those of the analog to digital conversion process, is thus accomplished. As a result, the system error only depends on the differential nonlinearity of the channel.
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