An equivalent circuit for microwave noise at the potential minimum
- 1 October 1957
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IRE Transactions on Electron Devices
- Vol. 4 (4) , 295-299
- https://doi.org/10.1109/T-ED.1957.14310
Abstract
It has been suggested that an inductive element should be added to Watkins RC equivalent circuit for the microwave noise current fluctuations at the potential minimum of a diode, and that this added element gives closer agreement with more recent work which shows a pronounced peak in noise current near the plasma resonance,a = \frac{1}{2}. This paper presents an approximate analytical argument for the inclusion of an inductive element, based on the density-function method of analysis, which predicts the proper value for the inductance and yields a curve of reduction factor vs frequency in agreement with more detailed theories. The value of the inductance is such as to resonate with the capacitance of the potential minimum ata = \frac{1}{2}. A discussion of the linearity of the potential minimum and of the idealized potential-minimum model is also included.Keywords
This publication has 4 references indexed in Scilit:
- Potential-minimum noise in the microwave diodeIRE Transactions on Electron Devices, 1957
- Monte Carlo Calculation of Noise Near the Potential Minimum of a High-Frequency DiodeJournal of Applied Physics, 1956
- Noise at the Potential Minimum in the High-Frequency DiodeJournal of Applied Physics, 1955
- The Effect of Velocity Distribution in a Modulated Electron StreamJournal of Applied Physics, 1952