Reactive multipliers have a disadvantage that they cannot be used at very high frequencies and they become less efficient.

Related MCQs

• Resistive multipliers are more efficient as compared to reactive multipliers.
• A major disadvantage of frequency multipliers is that they multiply the noise factor along with frequency.
• The major drawback of frequency multipliers is that they have:
• The production of power at higher frequencies is much simpler than production of power at low frequencies.
• High gain is not achievable at microwave frequencies using BJT amplifiers because:
• Microwave tubes are power sources themselves at higher frequencies and can be used independently without any other devices.
• Oscillators operating at millimeter wavelength are difficult to realize and are also less efficient.
•              antennas have gain less than reflector antennas but have more lenient tolerance on surfaces.
• In a diode frequency multiplier, an input signal of frequency fo applied to the diode is terminated with                   at all frequencies other than required harmonic.
• Magnetrons are microwave devices that offer very high efficiencies of about 80%.