Creating and sharing knowledge for telecommunications

Millimeter-wave antennas for 5G networks

on 30-11-2018

... IT will be organizing the seminar “Millimeter-wave antennas for 5G networks”, with talks by Prof. Eduardo Motta Cruz, from the Ecole Polytechnique of Nantes, France, and Professor Manuel Arrebola, from the University of Oviedo, Spain.

Date & time: Friday, November 30th, 10:30h
Location: meeting room of IT, 11th floor, North Tower, Técnico Lisboa

Title: “Developments of antenna systems future telecommunications networks”, by Eduardo Motta Cruz (Biography in:

This workshop, proposed by Mr. Eduardo MOTTA CRUZ, is dedicated to the research activities of the IETR laboratory (CNRS - France), led by the department “Antennas and Microwave Devices”, especially the BEAMS team (BEAM Antennas up to Mm and Submm waves).
The main activities concern the design of new sectorial, multi-beam, beam-deflection or high directivity millimetric antennas for different communication networks, using several technologies and characterization techniques, with a focus on future 5G networks.

Title: “Efficient Techniques for the Modelling and Optimization of Reflectarray Antennas”, by Manuel Arrebola (Biography in:

Printed reflectarray antennas have been considered as a smart solution for different applications since they exhibit some interesting properties and avoid inconveniences of reflector or phased-array antennas. However, they show limitations, mainly in the bandwidth and crosspolar level. An optimization process is required in order to improve these parameters and others but the technique are time and memory demanding because of the size of the problem being most of times unaffordable. Thus, a number of improvements in the basic technique are proposed, including the use of differential contributions or efficient cell modelling through Machine Learning (SVMs). The talk is divided into two parts. In the first one, the principle of work of shaped-beam reflectarray is presented, as well as the framework of the proposed technique and the challenges to be achieved. In the second part, some results of optimization of reflectarray antennas will be shown, including beam shaping, crosspolar reduction and direct optimization, discussing the efficiency and accuracy of the techniques.
More Information..

Millimeter-Wave In-Package Antennas

on 22-11-2018

... Prof. Zhang Yue Ping, from the Nanyang Technological University, Singapore

Date & time: Thursday, November 22nd, 11:00h – 13:00h
Location: Instituto Superior Técnico, Meeting Room, 5th floor, Torre Norte

Antenna-in-package (AiP) technology, in which there is an antenna (or antennas) with a transceiver die (or dies) in a standard surface-mounted device. AiP technology has been widely adopted by chip makers for 60-GHz radios and gesture radars. It has also found applications in 77-GHz automotive radars, 94-GHz phased arrays, 122-GHz imaging sensors, and 300-GHz wireless links. This lecture will start with a review of basic packaging ideas for AiP technology, particularly on the co-design of antennas and packages, complemented by a probe-based setup to measure impedance and radiation of mmwave in-package antennas. Finally, the lecture will present some recommendations on research topics to further the state of the art of AiP technology.

Zhang Yue Ping is a full Professor of Electronic Engineering with the School of Electrical and Electronic Engineering at Nanyang Technological University, Singapore, a Distinguished Lecturer of the IEEE Antennas and Propagation Society (IEEE AP-S), and a Fellow of IEEE. Prof. Zhang has made pioneering and significant contributions to the development of the antenna-in-package (AiP) technology that has been widely adopted by chip makers for millimeter-wave applications. His current research interests include the development of antenna-on-chip (AoC) technology and
characterization of chip-scale propagation channels at terahertz for wireless chip area network (WCAN). More Information..