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Experimental Assessment of Modulated S -Parameters Reliability in Modeling and Testing Wideband Radio Frequency Amplifiers

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1 Author(s)
Angrisani, L. ; Dipt. di Informatica e Sistemistica, Univ. Federico II, Napoli

The paper deals with modeling and testing of radio frequency (RF) amplifiers that operate with wideband signals, such as those involved in emerging wireless and/or wireline communication systems. The use of new parameters, i.e., the so-called modulated S-parameters, is particularly encouraged and supported. Differently from traditional S-parameters, their measurement no longer requires a sinusoidal signal as test stimulus but a digitally modulated signal of the same type with which the RF amplifier has to operate. The reliability of the new parameters is assessed through a number of experiments conducted on an RF amplifier, which is mainly addressed to very wide bandwidth industrial and commercial applications. Both sinusoidal and modulated S-parameters are evaluated, and their ability in describing the real performance of the amplifier when operating with typical wideband signals, such as those involved in third-generation (3G) communication systems, is compared

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Instrumentation and Measurement, IEEE Transactions on  (Volume:55 ,  Issue: 5 )