Characterization and Modeling of Wideband Wireless Transceivers

In this paper, we proposed a practical approach to accurately characterize a 3G wideband wireless transceiver, which will exhibit strong memory effects. The memory effects can be easily identified by accurate evaluation and alignment of the time delay between the input and output of the transceiver. Using the extracted transceiver characteristic data, a memory polynomial model is constructed to mimic the dynamic properties of the transceiver. The experimental validation results, which are obtained with a transceiver prototype based on an L-band 60- Watt GaAs FET push-pull amplifier, a vector signal generator, a spectrum analyzer and a vector signal analyzer, demonstrate the effectiveness of the transceiver characterization approach and the accuracy of the dynamic nonlinear models discussed.