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http://dx.doi.org/10.12673/jant.2016.20.6.556

Implementation of a 13.56 MHz 5kW RF Generator for ISM Band Applications  

Yoon, Young-Chul (Department of Electronic Engineering, Catholic Kwandong University)
Kim, Young (School of Electronic Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Advanced Navigation Technology / v.20, no.6, 2016 , pp. 556-561 More about this Journal
Abstract
This paper describes implementation of a 13.56 MHz, 5 kW RF high power generator for ISM band applications. This RF generator consists of four LDMOS modules of 1.25kW class-AB push-pull power amplifier with drive amplifier and its outputs are combined by using Wilkinson type transmission-line transformers. Its generator has a high efficiency and output power better than linearity. In order to discharge power transistor heats, we used on water cooled copper plate. Also, these have a composite circuit of combiner and low-pass filter and safety circuit to detector over and reflected power. The RF generator has achieved a efficiency of 79 % at 5.33 kW of saturated power level experimentally.
Keywords
ISM band; 13.56 MHZ amplifier; 5 kW high power amplifier; Water cooling;
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