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The power amplifier (PA) used in wide-band code-division multiple-access (WCDMA) needs to perform better from point of view linearity and efficiency. In the PA circuit harmonic traps and RC feedback arrangement are provided for improvement of linearity and stability. The power amplifier at collector voltage Vc of 3.4 V under WCDMA excitation shows an excellent linearity (first ACPR<-33dBc) and...
The power amplifier (PA) used in modern wireless system needs to perform better from point of view linearity and efficiency. A crucial perquisite for the design of PA is the availability of suitable device models. Artificial neural networks (ANN) recently gained attention as a fast and flexible way to develop HBT device model when compared to the conventional modeling approach based on empirical equations...
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