This presentation discusses the state of the art in achieving wideband (> 1 GHz) linearization of power amplifiers. Multi-octave bandwidth linearization has been achieved at frequencies from L through millimeter-wave bands. Basic linearization concepts are reviewed. Emphasis is placed on the use of predistortion linearization and particularly on its application with amplifiers employing GaN FET power devices. The trades between using a single predistortion linearizer and multi-band linearizers are discussed. The effect of harmonics (both even and odd order distortion products) and their correction for applications that cover more than an octave are considered.
Dr. Allen Katz is a professor of Electrical/Computer Engineering at The College of New Jersey. He is founder and president of Linearizer Technology, Inc., which now includes Linear Photonics, LLC and Linear Space Technology, LLC. He received his doctorate and baccalaureate degrees in electrical engineering from New Jersey Institute of Technology and a master’s degree in electrical engineering from Rutgers University. Dr. Katz holds 17 patents and has written more than 100 technical publications. He received the IEEE’s Microwave Society’s (MMT-S) Application Award in 2015 for his work in linearization, the IEEE Microwave Magazine Best Paper Award in 2010 and the William Randolph Lovelace II Award for outstanding contributions to space science and technology from the American Astronautical Society in 2002. He is also recipient of the IEEE Region 1 Technology Innovation Award in 2007. He has also served as the MTT-S Distinguished Microwave Lecturer. Dr. Katz is a Fellow of the IEEE and has served the MTT-S in a number of capacities. He is chair of the AP /ED/MTT chapter in the IEEE Princeton/Central Jersey Section and also is the Technical Program Committee co-chair for the IMS2018-Philadelphia. In addition, he has contributed to the organization of the Sarnoff Symposia and BenMAS meetings, and has organized the Trenton Computer Festival for several years in Princeton/Central Jersey.
Dr. Michael Hamilton is an Associate Professor, Electrical and Computer Engineering Dept., Auburn University and Assistant Director of the Alabama Microelectronics Science and Technology Center.