Ulrich L. Rohde is President of Compact Software, Inc., in Paterson, New Jersey, a partner of Rohde & Schwarz in Munich, Germany, and Chairman of the Board of Synergy Microwave Corporation in Paterson. Formerly a professor of electrical engineering at George Washington University and the University of Florida, Dr. Rohde, as president of Communication Consulting Corporation, has also consulted on a number of communication projects in industry and government, has published over forty scientific articles in professional journals, and has authored and coauthored several books, including Digital PLL Frequency Synthesizers: Theory and Design, the precursor to this volume.