Question

PLL designs have

(a) First order loop

(b) Second order loop

(c) Higher order loop

(d) None of the mentioned

This question was posed to me during an online exam.

Question is from Receiver Synchronization in division Synchronization of Digital Communications

Answer 1

Correct option is (b) Second order loop

The explanation is: Most of the PLL designs have second order loop as they can be made unconditionally stable.