Q. How to overcome the problem associated with switch type phase detective?

A
Increase loop gain depending on input signal
B
Phase shift is made linear
C
Limit the amplifier of input signal
D
All of the mentioned
Solution:

The problems can be eliminated by limiting the amplifier of the input signal that is converting the input to a constant amplified square wave. This can be achieved by using a balanced modulator used as full wave switching phase detector.

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