Semiconductor Microwave Devices

PRESENTED BY:SUBHAJIT DAS

What is Semiconductor microwave device ?

Semiconductor microwave devices are electronic devices (Diodes, Transistors or I.C.) used in high frequency applications.

PIN DIODE

Devices:• Diodes :o PIN Diodeo Gunn Diodeo Impatt Diodeo Schottky Diodeo Varacter Diodeo Backward Diode

• Transistors• ICs

PIN DiodeFrequency up to 700 GHz Applications : RF and microwave switches, attenuators, Limiters

Gunn Diode Only N-dopedFrequency range is from 4 GHz to 100 GHz Applications : Oscillators, Sensors, measuring instruments,Radio amateur

Impatt DiodeFrequency is about 100 GHz or more Alternating signal is generated simply by applying a DC supply Applications : Alarms, Radar, Detectors using RF technology

Schottky Diode Frequency range is from 3 MHz to 10 GHz Applications : Voltage clamping,Reverse current and discharge protection,Power supply

Tunnel DiodeFrequency is up to 100 GHz Applications : Low power amplifiers

Varactor Diode Changes its capacitance with the change of the bias Frequency is up to up to 105 GHz Application : Voltage controlled capacitors and oscillators, RF filters

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