The analysis of the polytron characteristics in the millimeter wave band

Victor A. Solntsev

doi:10.1117/12.2303240

1 January 1994 The analysis of the polytron characteristics in the millimeter wave band

Victor A. Solntsev

Proceedings Volume 2250, International Conference on Millimeter and Submillimeter Waves and Applications 1994; 225067 (1994) https://doi.org/10.1117/12.2303240
Event: Millimeter and Submillimeter Waves and Applications: International Conference, 1994, San Diego, CA, United States

Abstract

A possibility to amplify electromagnetic oscillations due to negative conductance of an electron beam in the anode-grid space of a distributed mic- rotriode (polytron) has been shown.i When the distance between the grid and anode is of the order of 10-100 microns the amplification becomes possible in the band of millimeter waves (the case of equal potentials at the grid and anodW The absolute value of the negative electron conductance turned out not great so that a considerable beam current density is required to obtain an appreciable amplification. This paper considers the effect of the potenti- al difference between the anode and grid. It's quite clear that in decreasing the anode potential the electron conductance and efficiency can increase due to the increase of the electron transit time and because of the less heat dissipation on the anode. The corresponding relationships have been studied in this paper with the help of the large signal theory. It has been shown that the absolute value of the negative electron conductance can be increased 2-2.5 times and the efficiency can reach - 65% if one succeeds in providing a sufficient current density in decreasing the anode potential.

Citation Download Citation

Victor A. Solntsev "The analysis of the polytron characteristics in the millimeter wave band", Proc. SPIE 2250, International Conference on Millimeter and Submillimeter Waves and Applications 1994, 225067 (1 January 1994); https://doi.org/10.1117/12.2303240

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