PLL phase and frequency characteristics

1. Which characteristics of PLL is defined as the range of frequencies?
2. What is the frequency of PLL?
3. How does PLL increase frequency?

Which characteristics of PLL is defined as the range of frequencies?

Capture Range: The Range of frequencies over which the PLL can acquire the lock with an input signal is called capture range.

What is the frequency of PLL?

In these examples, two PLLs are used to generate frequencies suitable for a 5G systems local oscillator (LO) in a range between 7.4 GHz to 7.6 GHz, with 1 MHz of channel resolution.

How does PLL increase frequency?

A phase-locked loop (PLL) uses a reference frequency to generate a multiple of that frequency. A voltage controlled oscillator (VCO) is initially tuned roughly to the range of the desired frequency multiple. The signal from the VCO is divided down using frequency dividers by the multiplication factor.