Multidimensional Measurements

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49,00 €

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on RF Power Amplifiers

This book describes a measurement system that was set to perform comprehensive measurements on RF power amplifiers.

Data obtained from the measurements is then processed mathematically to plot 3-D graphs of the basic parameters affected or generated by nonlinearities of the amplifier i.e.

gain, efficiency and distortion .Using a class AB amplifier as the DUT, two sets of signals – both swept in power level and frequency - were generated to validate the method; a two-tone signal and a WCDMA signal.

The measurement setup yields 3-D plots of variations of gain, efficiency or distortion versus any arbitrary range of frequencies and input levels.

Moreover, the measurement tool can be used to plot traditional 2-D plots.

The test signals were generated by computer then sent to a vector signal generator that generates the actual signals fed to the amplifier.

The output of the amplifier is fed to a vector signal analyzer then collected by computer to be handled.

MATLAB® was used throughout the entire process.

The system can be a very useful tool for RF amplifier users and designers.

It is also useful for students who are working to understand RF amplifiers and their common trade-offs.

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