The production of power at higher frequencies is much simpler than production of power at low frequencies.

Related MCQs

• Microwave tubes are power sources themselves at higher frequencies and can be used independently without any other devices.
• 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.
• Low is the G/T ratio of an antenna, higher is its efficiency.
• Reactive multipliers have a disadvantage that they cannot be used at very high frequencies and they become less efficient.
• High gain is not achievable at microwave frequencies using BJT amplifiers because:
• If a power amplifier has an output power of 10 W, and an amplifier gain of 16.4 dB, then the input drive power is:
• The type of dipole antenna that has a higher band width is called as?
• In an oscillator, the resonant feedback circuit must have must have a low Q in order to achieve stable oscillation.
• If the power input to an antenna is 100 mW and if the radiated power is measured to be 90 mW, then the efficiency of the antenna is:
• If the output power of an amplifier is 10 V, and the input power supplied to the amplifier is 0.229 V given that the DC voltage used is