Potential-minimum noise in the microwave diode

@article{Siegman1957PotentialminimumNI,
  title={Potential-minimum noise in the microwave diode},
  author={Anthony E. Siegman and Dean A. Watkins},
  journal={IRE Transactions on Electron Devices},
  year={1957},
  volume={4},
  pages={82-86}
}
An analysis of the potential-minimum region in the microwave diode is presented which predicts the amount of noise convection current at the potential minimum under conditions present in guns of low-noise traveling-wave tubes and klystrons. Contrary to previous work by one of the authors, this analysis partially includes the effects of finite transit angle between the cathode and potential minimum. The results indicate that under certain conditions of space-charge limitation, the noise… 
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References

SHOWING 1-7 OF 7 REFERENCES

Noise at the Potential Minimum in the High‐Frequency Diode

Noise quantities at the potential minimum in the high‐frequency diode are analyzed by means of a relatively simple model which assumes that the transit angle from the cathode to the potential minimum

Noise in One-Dimensional Electron Beams

A generalized theory of noise in one‐dimensional electron beams is developed with the aid of the theory of four‐terminal networks. No specific assumptions are made as to the input noise velocity and

Microwave shot noise in electron beams and the minimum noise factor of travelling wave tubes and klystrons

A theorem recently proposed by J. R. Pierce concerning the intrinsic noise of electron streams is verified for electron beams originating in thermionic diodes under arbitrary conditions. The theorem

Minimum Noise Figure of Traveling‐Wave Tubes with Uniform Helices

By using a new theorem concerning noise in electron streams together with work by D. A. Watkins, an expression for the minimum noise figure of a traveling‐wave tube with a uniform helix is deduced.

Noise phenomena in the region of the potential minimum

  • J. Whinnery
  • Physics
    Transactions of the IRE Professional Group on Electron Devices
  • 1954