MESFETs

Paper Summary:

A transistor is a device used for controlling one electrical signal with another. The name "transistor" came from combining the words "transfer" and "resistor" and the name tells how the device works. This paper describes one type of transistor called a Metal Semiconductor Field Effect Transistor (MESFET), which is made by building layers on top of each other and doping the semiconductor material to a profile. The paper includes diagrams and figures.

From the Paper:

"While MESFET integrated circuits have become accepted in many high frequency applications, they have certain limitations. For power amplifiers used in digital systems it is important to have a linear signal - one that is not distorted or altered when amplified (RF Micro Devices, 2000). GaAs MESFET devices cannot meet the high linearity performance standards without sacrificing other performance standards. Also, GaAs MESFET amplifiers usually require both a positive and a negative power supply, which requires the inclusion of additional components or circuitry, which means an increase in the size and complexity of the device. Also, the linear structure of GaAs MESFET devices hinders the ability to shrink the device and so enhance manufacturing yields and reduce costs."

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