Solid State Devices

The classification of solid state Microwave devices can be done −

· Depending upon their electrical behavior

o Non-linear resistance type.

Example − Varistors (variable resistances)

o Non-Linear reactance type.

Example − Varactors (variable reactors)

o Negative resistance type.

Example − Tunnel diode, Impatt diode, Gunn diode

o Controllable impedance type.

Example − PIN diode

• Depending upon their construction
• Point contact diodes
• Schottky barrier diodes
• Metal Oxide Semiconductor devices (MOS)
• Metal insulation devices

The types of diodes which we have mentioned here have many uses such as amplification, detection, power generation, phase shifting, down conversion, up conversion, limiting modulation, switching, etc.