is a device that converts electrons to photons or vice-versa.

Related MCQs

• A                      is a device that converts a guided electromagnetic wave on a transmission line into a plane wave propagating in free space.
•                    is a non linear circuit that converts DC power to an AC waveform of desired frequency based on the oscillator design.
• When either a voltage or current is applied to the terminals of bulk solid state compound GaAs, a differential              is developed in that bulk device.
•                          is a microwave device in which the frequency of operation is determined by the biasing field strength.
• A modern device that replaces a slotted line is:
• Any device with negative impedance as its characteristic property can be called:
• In a microwave oscillator, a load of 50+50j is connected across a negative resistance device of impedance -50-50j. Steady state oscillation is not achieved in the oscillator.
• In transistor oscillators, the requirement of a negative resistance device is satisfied using a varactor diode.