(1997) Río Bocio, Carlos del; Gonzalo García, Ramón; Möbius, Arnold; Sorolla Ayza, Mario; Thumm, Manfred; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
In this paper, a description of a new compact microwave oven system based on a tecnological
gyrotron for material processing applications is presented. The whole system has been designed by the
Institute of Applied Physics in Nizhny Novgorod (Russia) and nowadays is installed in the
Forschungszentrum (Karlsruhe, Germany). It consists ot a technological gyrotron working at 30 GHz
giving 10 Kw CW in the TE02 circular waveguide mode, a quasi-optical transmission line (optimized in
this work) and the final very oversized cavity or applicator.
The original transmission line had a transmission efficiency of about 70%, by using a Vlasov
launcher to generate a fundamental gaussian beam from the TE02 mode. The power was driven through
a total of three mirrors. The improved design presented here increases the transmission efficiency up to
91%, by using a higher order gaussian beam mode, azimuthaly polarized and conical profile, by using
only two ellipsoidal mirrors.
