In a                    oscillator, the RF wave travels along the helix from the collector towards the electron gun.

Related MCQs

• Colpitts oscillator in the feedback section has an inductance of 4 mH and capacitors of 12 nH and 4 nH. Then the resonant frequency of Colpitts oscillator is:
• 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 a Gunn diode oscillator, the electron drift velocity was found to be 107 cm/second and the effective length is 20 microns, then the intrinsic frequency is:
• A                      is a device that converts a guided electromagnetic wave on a transmission line into a plane wave propagating in free space.
• When the separation between two lines that carry the TEM wave approaches λ the wave tends to be radiated.
• In Gunn diode oscillator, the Gunn diode is inserted into a waveguide cavity formed by a short circuit termination at one end
• If the critical field in a Gunn diode oscillator is 3.2 KV/cm and effective length is 20 microns, then the critical voltage is:
•                  is a single cavity klystron tube that operates as on oscillator by using a reflector electrode after the cavity.
•                    is a non linear circuit that converts DC power to an AC waveform of desired frequency based on the oscillator design.
• The transfer function of an RF oscillator is given by: