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Microwave Transistor vs TED-difference between microwave transistor and TED(Transfer Electronic Device)

This page covers difference between microwave transistor and TED(Transfer Electronic Device). They are basically microwave solid state devices.

Microwave Transistor

•  The Microwave transistor devices include microwave BJT, FET, HBT, tunnel diode etc. Here electrons and holes both participate in the transport process.

•  It consists of junctions or gates.

•  It is fabricated from elemental semiconductor such as Ge and Si.

•  It operates with low energy "Warm" electrons.

•  Applications:S and L band RF transmitters, L and S band high speed switching devices, microwave amplification and oscillations, memory and switching devices

•  Advantages:Low cost, low power supply, small size

TED (Transfer Electronic Device)

•  The TED devices include Gunn diode, LSA diode and Inp diode. Here electron transfer from lower conduction valley to the upper satellite valley.

•  It is not having any junction or gate, it is a bulk type of device.

•  It is fabricated from compound semiconductor such as GaAS and Inp.

•  It operates with high energy "hot" electrons.

•  Applications:L,S,C,X band amplifier and oscillators, RF transmitter, Radar systems

•  Advantages:Low noise, high gain, low power, reliable, lighter in weight

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