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In this paper the application of adaptive matching networks for efficiency enhancement of class-E and class-F power amplifiers will be presented. These networks are capable of synthesizing the optimum impedance at the fundamental frequency as well as the suitable terminations at the harmonics. Additionally they use only transmission lines and capacitors, making them suitable for high power applications...
This paper presets a 8.5 W GaN inverse class-E power amplifier using an output matching network suitable for high power applications. The presented output matching network overcomes several problems in the original implementation. First a transmission line stub is used directly at the transistor drain to compensate for the drain source capacitance, second the lumped inductor in the original implementation...
A very important quality factor of a transponder is its threshold field strength which is a result of the performance of the integrated circuit (IC) and the loop antenna. This is very important for near field communication (NFC) applications to ensure a fast and reliable communication between the active device and the transponder with a minimum of battery power. In this paper a new approach using...
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