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Telecommunications and Radio Engineering

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v69.i11.70
pages 1005-1017

SELF-EXCITED OSCILLATIONS IN ABRUPT p - n JUNCTIONS WITH A FIXED REVERSE BIAS

K. A. Lukin
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine
P. P. Maksymov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine

ABSTRACT

Numerical methods are used to solve the drift-diffusion model equations for reverse-based p - n junctions. A regime of self-excited oscillations is analyzed for an abrupt junction with a fixed reverse bias. As has been shown, the equations of the drift-diffusion model of the p - n junctions under analysis in fact make up a mathematical model of a self-oscillating system. The generation mechanism of self-excited excitations has been investigated. The factors influencing the oscillation frequency, amplitude and spectrum have been established and frequency ranges determined for reverse-biased p - n junctions made of various materials.