Why an Impatt diode is used in reverse bias mode?

An IMPATT diode is reverse biased above the breakdown voltage. The high doping levels produce a thin depletion region. The resulting high electric field rapidly accelerates carriers which free other carriers in collisions with the crystal lattice.

What are the two important features of a Schottky diode?

Schottky diodes have high current density, and low forward voltage drop means that less power is wasted than a typical PN junction diode and this makes Schottky diodes more suitable for power rectifiers.

What is the special feature of Schottky barrier diode?

Schottky diode offers fast switching action and has a low forward voltage drop. As we are aware that in a PN junction diode, p-type and n-type are joined together to form a PN junction. Whereas, in a Schottky diode metals like platinum or aluminum are used instead of P type semiconductors.

What are the applications of IMPATT diode?

The applications of IMPATT diode include the following.

  • These types of diodes are used like microwave oscillators within modulated output oscillators & microwave generators.
  • These are used in continuous-wave radars, electronic countermeasures & microwave links.

What is the drawback of IMPATT diode?

A major drawback of IMPATT diodes is the high level of phase noise they generate. This results from the statistical nature of the avalanche process.

What is application of Schottky diode?

Application of Schottky Diode Used in reverse current protection. Used in discharge protection. Used in voltage clamping application. Used in RF mixer and Detector diode.

What is the application of Schottky diode?

Schottky diodes are used as switches in fast-clamp diode applications. In this application, the base junction is forward biased. With Schottky diodes, the turn-off time is significantly reduced and the speed of the circuit is increased.