# 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…

## 10 Citations

### An equivalent circuit for microwave noise at the potential minimum

- PhysicsIRE Transactions on Electron Devices
- 1957

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…

### New Mechanism of Noise Reduction in Electron Beams

- Physics
- 1959

Experiments have demonstrated that the basic noise quantities of an electron beam can be transformed and optimized by varying the field configuration and flow characteristics in the multivelocity…

### High-frequency effects of the potential minimum on noise

- PhysicsIRE Transactions on Electron Devices
- 1960

A physical model of the compensation phenomenon in space-charge reduced shot noise is discussed in some detail and applied first to a planar diode of infinite spacing short-circuited to ac effects.…

### Noise transport in the crossed-field diode

- Physics
- 1964

The present work treats the transport of noise, originating at a thermionic cathode, across a planar crossed-field diode. A multivelocity Monte Carlo analysis is used to simulate thermionic emission…

### Transport of Noise at Microwave Frequencies through a Space‐Charge‐Limited Diode

- Physics
- 1960

Several analyses of the transport of cathode shot noise through a space‐charge‐limited diode at microwave frequencies have been published to date. Each of these analyses has been beset by…

### Conditions for minimum noise generation in backward-wave amplifiers

- PhysicsIRE Transactions on Electron Devices
- 1958

The noise figure of a backward-wave amplifier can be minimized by optimizing the standing-wave ratio and position of the standing wave of noise power on the beam in the precircuit region. These…

### Monte Carlo calculation and measurement of shot-noise reduction factor

- Physics
- 1972

The frequency characteristic of the shot-noise reduction factor (R2) of the " O "-type diode is investigated by three methods: the first is a Monte Carlo calculation following the approach of Tien…

### Design and calculation procedures for low-noise traveling-wave tubes

- PhysicsIRE Transactions on Electron Devices
- 1957

A step-by-step procedure for designing low-noise traveling-wave tubes that permits the rapid calculation of the significant design parameters corresponding to the conditions for minimum noise figure and includes the use of a special transmission-line type chart.

### High-frequency behavior of the crossed-field potential minimum

- PhysicsIRE Transactions on Electron Devices
- 1961

A time-domain analysis of the high-frequency currents in a crossed-field potential minimum is presented. The distinctions between ordinary and crossed-field potential minimums are discussed and a…

### Transport of noise fluctuations in convergent flow crossed-field electron guns

- Physics
- 1969

The transport of noise fluctuations in convergent flow or so-called Kino-type crossed-field electron guns is investigated in terms of a two-dimensional computer simulation of the gun by the…

## References

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- Physics, Geology
- 1955

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

- Physics
- 1955

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…

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- Physics
- 1954

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…

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- Physics
- 1954

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.…

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- PhysicsTransactions of the IRE Professional Group on Electron Devices
- 1954