Stability Test of Near-Magnet Power Amplifier

In this work a method to test the Stability of Near-Magnet Power Amplifier (DUT) is explained and the test results are presented. The method includes a bench stability test which employs an electronic circuit designed to realize reflection coefficients with variable magnitude and phase, which is implemented using the concept of the laod-pull. The mutual effect between the antennas around the coil have also been tested to confirm the stability of the DUT in such situations. Results show that although the DUT is stable for all the situations, but the output power is depended on the variation of the load.

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