Radio frequency(RF) devices used in modern wireless systems must meet increasingly complicated spectral constraints while still operating with high power efficiency. A fastreal-timetwo-toneactiveloadpullalgorithm...
详细信息
Radio frequency(RF) devices used in modern wireless systems must meet increasingly complicated spectral constraints while still operating with high power efficiency. A fastreal-timetwo-toneactiveloadpullalgorithm is proposed to assess the relationship between nonlinear performance with associated device load impedance variations. This algorithm employs realtime measurement data to extract two-tone local nonlinear behaviour model, which is further used for the prediction of injected signal value in the activereal-timeloadpull system, therefore minimizing the number of iterations required for load emulation. The proposed method was validated on a realtwo-toneload-pull measurement bench using off-the-shelf instruments. The result shows that the measurement speed has been greatly increased without sacrifice of the impedance emulation *** intelligent two-toneload-pullalgorithm is expected to be applied in the designing of modern communication system and radar transmitters, as well as the validation of the models of radio frequency transistors.
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