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Future radar transmitters will require a fast reconfiguration of their radio-frequency circuitry in order to adapt to changes in operating frequency and spectral output while maintaining high power-added efficiency. In this paper, transistor load-pull measurement results are displayed in the Power Smith Tube using measurements from a tunable-varactor matching network. Measuring load-pull characteristics...
Reconfigurable devices in cognitive and adaptive radio and radar transmitters must be able to reconfigure power amplifier load impedance quickly in real-time to accommodate changes in operating frequency and spectral performance. This paper focuses on the use of small-signal S-parameters, which provide the optimum small-signal gain load termination, to calculate an intelligent starting point for the...
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