Publication

Avalanche noise diodes: A compact circuit model compatible with advanced CAD tools

Christian Enz, Pierre-André Farine, Cyril Botteron, Gabriele Tasselli
2015
Conference Papers

Abstract

This paper proposes, for the first time, a compact model for avalanche noise diodes that can easily be inserted in advanced CAD tools. The model is based on the theory of the Read type microwave avalanche diodes. It fully accounts for the electronic tuning of the avalanche frequency with the square root of the diode biasing current and is scalable with the device area. The equivalent circuit has been written for ADS of Keysight Technologies and is verified against published experiments. The modeled input impedance is within 20% of the measured one in the whole frequency band from DC to 40 GHz. Futhermore, the Excess Noise Ratio (ENR) of the diode can be predicted as a funtion of the avalanche current and is in good agreement with experiments. The developed model is useful for the simulation and the design of calibration circuits adopted by microwave radiometers, radio astronomy receivers and high reliability wireless apparatuses.

Official source

https://infoscience.epfl.ch/entities/publication/573561f3-2af0-48d9-bb90-8c8359fe9c88

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Christian Enz, Pierre-André Farine, Cyril Botteron, Gabriele Tasselli
2015
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/573561f3-2af0-48d9-bb90-8c8359fe9c88

About this result

Related concepts (32)

Equivalent circuit

In electrical engineering, an equivalent circuit refers to a theoretical circuit that retains all of the electrical characteristics of a given circuit. Often, an equivalent circuit is sought that simplifies calculation, and more broadly, that is a simplest form of a more complex circuit in order to aid analysis. In its most common form, an equivalent circuit is made up of linear, passive elements. However, more complex equivalent circuits are used that approximate the nonlinear behavior of the original circuit as well.

Input impedance

The input impedance of an electrical network is the measure of the opposition to current (impedance), both static (resistance) and dynamic (reactance), into a load network that is external to the electrical source network. The input admittance (the reciprocal of impedance) is a measure of the load network's propensity to draw current. The source network is the portion of the network that transmits power, and the load network is the portion of the network that consumes power.

Diode

A diode is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance). It has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the other. A semiconductor diode, the most commonly used type today, is a crystalline piece of semiconductor material with a p–n junction connected to two electrical terminals. It has an exponential current–voltage characteristic. Semiconductor diodes were the first semiconductor electronic devices.

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