Radio frequency (RF) and microwaves are traditionally used for data transmission or sensing. A different application field uses RF radiation and microwaves to “heat” materials in the broadest sense of the word. Within this RF Energy application field, the magnetron and triodes have been used for decennia as “the” workhorses to generate the electromagnetic power for a number of industrial applications.
With the advent of affordable high power, high frequency semiconductor (i.e. solid state) devices, the RF- and microwave generation has opened up a new realm of control and precision, enabling the improvement of existing, and also the development of novel heating applications.
The talk will describe the differences between old tube-based and novel solid state-based electromagnetic energy generation. Control, reproducibility, agility and feedback for solid state enables complex applications like powering plasmas, or subtle microchemical reactors as well as high power applications like methan reforming or food pasteurization and sterilization in very flexible and modular ways. A number of these applcations and their respective advanced control strategies will be presented.
It is believed that the solid state technology will eventually replace all tube-based generators.
Klaus Werner, PinkRF
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