Kye-Ik Jeon

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This paper describes a high efficiency class-E power amplifier using the experimental- based design method. The class-E power amplifier is designed and implemented using an LDMOSFET with a 10 W peak envelope power (PEP) at a band of 2.14 GHz. To suppress harmonic powers and reduce losses, the output matching network using transmission lines is used. From(More)
A simple predistortion technique to cancel the fifth-order intermodulation (IM5) as well as third-order intermodulation (IM3) components using a third-order predistorter (PD) is represented. The IM3 and IM5 components are cancelled out simultaneously by their same magnitude and phase difference in the PD and power amplifier (PA). Moreover, this phase(More)
In this paper, the intermodulation distortion (IMD) sweet spots that are varied with gate bias voltage and input power in RF power amplifiers are predicted with simple mathematical analysis. The analysis is based on the ID-VGS transfer characteristic curve and odd-order two-tone distortion products. The mathematically derived IMD sweet spots have similar(More)
A simple high-order predistorter to cancel the 3<sup>rd</sup> - and 5<sup>th</sup> -order intermodulation (IM3 and IM5) components of RF power amplifiers is proposed. The IM3 and IM5 components are cancelled out simultaneously by using their identical magnitude and phase difference in the predistorter and power amplifier. For experimental verification, a(More)
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