Amplifier efficiency is the ratio of RF output power to DC input power. This parameter determines the performance of an amplifier.

Related MCQs

• 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:
• 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
•                      is defined as the ratio of input signal to noise ratio to the output signal to noise ratio.
• Along with a differential amplifier, 1800 hybrid is used both at the input and output.
• 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:
• The klystron tube used in a klystron amplifier is a                    type beam amplifier.
• A class B amplifier consists of                 transistors in order to conduct the input signal over the entire cycle.
• Important factors to be considered for power amplifier design are:
•                          uses balanced input and output, meaning that there are 2 signal lines, with opposite polarity at each port.
• Low is the G/T ratio of an antenna, higher is its efficiency.