Analog Communication Set 3

RC coupling ✘ Transformer coupling ✘ Direct coupling ✘ RF coupling ✔

1 ✘

Mixer ✘ Detector ✘ IF amplifiers ✘ Either mixer or detector or IF amplifiers ✔

by the AGC ✘ by the noise that is generated in the receiver ✘ by the dynamic range of the receiver ✘ by the type of detector circuit being used ✔

Sampling signals less than Nyquist Rate ✘ Sampling signals more than Nyquist Rate ✘ Sampling signals equal to Nyquist Rate ✘ Sampling signals at a rate which is twice of Nyquist Rate ✔

1 ✘

all RF amplifiers are of class A ✘ all RF amplifiers can be nonlinear ✘ minimum RF power is required ✘ maximum RF power is required ✔

all RF amplifiers are of class A ✘ all RF amplifiers can be linear ✘ minimum RF power is required ✘ maximum RF power is required ✔

pi network and T network ✘ pi network and bridge network ✘ bridge network and T network ✘ pi network and omega network ✔

they are essentially balanced modulators ✘ they are essentially class C amplifiers ✘ they are essentially class AB amplifiers ✘ they are essentially mixers ✔