题目：Recent Trends on Adaptive-Transfer-Function and Multi-Functional RF/Microwave Passive Filtering Components 时间：2016年 3月17日上午10点    地点： 行政楼111会议室 报告人：Professor Roberto Gómez-García                University of Alcala, Madrid, Spain                Associate Editor, IEEE TMTT, IET MAP

Biography：Roberto Gómez-García received the Telecommunication Engineer and Ph.D. degrees from the Polytechnic University of Madrid, Madrid, Spain, in 2001 and 2006, respectively. Since April 2006, he has been an Associate Professor with the Department of Signal Theory and Communications, University of Alcalá, Alcalá de Henares, Madrid, Spain. He has been for several research stays in the C2S2 Department of the XLIM Research Institute (formerly IRCOM), University of Limoges, France, Telecommunications Institute of the University of Aveiro, Portugal, the U. S. Naval Research Laboratory (NRL), Microwave Technology Branch, Washington, DC, USA, and Purdue University, West Lafayette, IN, USA. His current research interests include the design of fixed/tunable high-frequency filters and multiplexers in planar, hybrid and MMIC technologies, multi-function circuits and systems, and software-defined radio and radar architectures for telecommunications, remote sensing, and biomedical applications.

Dr. Gómez-García is currently an Associate Editor for the journals IEEE Transactions on Microwave Theory and Techniques, IET Microwaves, Antennas and Propagation, and a Senior Editor for the IEEE Journal on Emerging and Selected Topics in Circuits and Systems. From 2013 to 2015 was Associate Editor for the journal IEEE Transactions on Circuits and Systems I: Regular Papers.

 He is the recipient of the “2016 Outstanding Young Engineer Award” from the IEEE Microwave Theory and Techniques Society “for outstanding early career contributions to the microwave profession”.

Abstract：The purpose of this talk is to present recent research advances in the field of multi-functional and reconfigurable RF/microwave passive filtering components. Specifically, power-distribution and impedance-transformation planar networks with added bandpass filtering capability, as well as filtering devices that integrate several filtering functionalities (e.g., bandpass filtering and dynamic notch filtering for in-band interference mitigation) are reviewed. Two different design philosophies are expounded for the realization of these dual-function circuits: i) the embedding of transversal signal-interference filtering sections to incorporate high-selectivity single/multi-band bandpass filtering capabilities for frequency-static applications, and ii) the inclusion of fully-adaptive single/multi-band quasi-bandpass filtering stages for frequency-adaptive systems. The theoretical foundations of these design techniques are described. Moreover, the experimental results of several microstrip proof-of-concept prototypes will be shown as practical verification of the engineered multi-functional components.