The objective of this course is to provide a state of the art review of phase locked loop circuits and applications from a design and development perspective. Intended for RF and Microwave Engineers, the course details out the design and development of phase locked loop circuits. Topics include PLL basics, VCOs, phase detectors, open and close loop characterization, loop filter design, and phase noise concepts. Examples will be given to a variety of problems relevant to the design of phase locked loops.