Multiple choice

Which of the following will allow reducing the lock range frequencies of a PLL?

  1. Reduce the center frequency of VCO of the PLL

  2. Reduce the frequency of the signal

  3. Reconstruct the low pass filter used in PLL to have low transition band.

  4. Reduce amplification of the amplifier used in PLL

  5. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

By reducing the transition period of the LPF, one can reduce the lock range because lock range frequencies are those frequencies, which lie in the transition band of the filter.

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