COMPLEX ZEROS OF A TRANSCENDENTAL IMPEDANCE FUNCTION.
NORGES TEKNISKE HOEGSKOLE TRONDHEIM ELECTRONICS RESEARCH LAB
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The electrical impedance of a semiconductor supporting two waves contains an entire transcendental function of the form fzexp-z-1-cz, where c is a complex parameter. This function has an infinity of zeros in the left half z-plane when c is finite 0c infinity. Several approximate expressions for the location of zeros as function of c are obtained. For certain values of c one or several zeros are located in the right half z-plane. The real part of some of those exceeds an arbitrarily large positive number, provided c is properly chosen. This corresponds to resonances which represent growing oscillations. Author
- Solid State Physics