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

By M. Willert-Porada

This booklet is meant to supply non-specialists an outline of the state-of-the-art in microwave and excessive frequency undefined, size, and modelling in addition to to offer the experts perception into the main complex R&D issues of microwave and excessive frequency diversified 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 subject but in addition with new release, transmission, and detection of microwave and radio frequency radiation. the subjects have been chosen from contributions of the eighth foreign convention on Microwave and excessive Frequency Heating, organised through 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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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. As a result to their physical interaction principles, the EIO and the magnetron are most efficient for compact applications, where the component size is strictly limited. 15 GHz (see Fig. 4). The use of gyrotrons appears to be of interest if one can realize a relatively simple, low cost device which is easy to use (such as a magnetron).

In accord with the discussion [7], it is safe to assume that microwave or mm-wave technologies have a chance to replace the traditional ones, if only the replacement does lead to drastic improvement in properties of materials and /or in economic validity. Therefore, when considering the line of investigation for application-driven mm-wave processes, it is of paramount importance to pursue not so a comparison between microwave (or traditional) and mmwave processes, as a search of radically new processes in which the use of mmwave radiation is indispensable.

The developed system has been constructed in WR340 waveguide, with four motorised metallic posts, whose penetration depth inside the waveguide can be modified. This penetration depth is calculated from S11 measurements performed by a high-power six-port reflectometer and then the system is monitored and fine-adjusted all along the process. Introduction The matching process is a problem of great interest in microwave heating applications, because we are dealing with very high powers and it is very important to avoid power losses.

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