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This paper presents the needed interface geometry from device characterization process that is required for a comprehensive set of load-pull data. It also shows the method to obtain this geometry when the dielectric material used for characterizing the active device is different from the one used for the amplifier. The basics of load-pull method for device characterization are used to make the case...
This manuscript presents a simulation based design methodology of an 80-meter Doherty power amplifier with a maximum output power of 40 dBm. The amplifier is designed using a widely available IRF510 enhancement mode MOSFET and lumped elements. The classical Doherty architecture utilizes a Class-AB carrier amplifier and Class-C peaking amplifier. LTSpiceIV is used throughout the design process to validate...
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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