Project Title:

 CMOS digital phase and  frequency difference detector.

Description:

A phase frequency detector works on the logic which compares the phase of two input signals. It is an asynchronous circuit which is made up of four flip-flops.

It not only produces output when the input signals have phase difference but also produces the output when the signals have frequency difference.

Design Goals:

• To design a phase and frequency detector for two different signals.

• To determine whether there is any phase or frequency error in between input and output signals.

• Therefore, by detecting the error we came to know what is the change that the circuit or channel where the input signal is given was altering the phase or frequency of input signal.

Block diagram of design:

Schematic Diagram:

References:

1. https://en.wikipedia.org/wiki/Phase_detector#References

2. https://analog.intgckts.com/phase-locked-loop/phase-       frequency-detector/

3. Electronic Circuits: Linear/Analog Louis E. Frenzel Jr., in Electronics Explained (Second Edition), 2018.

4. CMOS phase frequency detector for high-speed applications.

         https://ieeexplore.ieee.org/document/5418651

Team members:

Mangalapally Naveen Kumar.

Bommakanti Pravali.