Advances in Microwave and Radio Frequency Processing : by M. Willert-Porada

By M. Willert-Porada

This ebook is meant to supply non-specialists an summary of the state-of-the-art in microwave and excessive frequency undefined, dimension, and modelling in addition to to offer the experts perception into the main complex R&D issues of microwave and excessive frequency varied disciplines. It offers not just with the applying of radiation of three hundred MHz to three hundred GHz frequency to synthesis, heating or ionisation of topic but in addition with new release, transmission, and detection of microwave and radio frequency radiation. the themes have been chosen from contributions of the eighth overseas convention on Microwave and excessive Frequency Heating, organised via AMPERE and held in September 2001 in Bayreuth, Germany. The papers have been referred by way of significant experts within the respective box.

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Extra resources for Advances in Microwave and Radio Frequency Processing : Report from the 8th International Conference on Microwave and High-Frequency Heating held in Bayreuth, Germany, September 3-7, 2001

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58 V/m. Conclusions Microwave heating of high loss materials is a quite complex task, because of the limited electrical field uniformity within the material to be heated. Particularly for large samples of low thermal conductivity materials electrical field distribution will completely control the homogeneity of microwave heating, with an increased probability of developing hot-spots or thermal runaway. Based on simulation, the usefulness of multiple ports in travelling wave guide applicators is tested, with respect to sample size and phase shifts.

15 GHz, CW sources for technological applications and the Figs. 4 and 5 demonstrate an elementary comparison of these vacuum electron tubes (single component) with typical power levels < 10 kW in terms of tube's size, weight, efficiency and accelerating voltage requirement. 15 GHz. With a single stage depressed collector efficiencies of 50% - 60% can be achieved. The EIO shows here the lowest performance. Another clear disadvantage of the EIO is obvious, if you consider the necessary high accelerating voltage per power.

6 electromagnetic field simulator. 45 GHz and a TE10 excitation, assumed as the only mode existing at the cavity ports with a 1 V/m peak to peak amplitude electric field. A magnetic wall is used in order to reduce the number of unknowns in the FEM simulation by exploitation of the symmetry of the problem and shortening the simulation time without loss of accuracy. Results and discussion Applicators with a different number of incident fields were analysed. Simulation results on the electric field distribution in V/m in a one-port travelling wave applicator are shown in Figure 1.

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