Abstract：
The Square Kilometre Array (SKA) will be the largest radio telescope in the world. It will be used to answer fundamental questions of science and about the laws of nature.The total collecting area of the SKA will be well over one square kilometre. To achieve this, SKA will use thousands of dishes (high frequency) and many more low frequency and mid-frequency aperture array telescopes being built principally in South Africa and Western Australia and linked together over thousands of kilometres.
This lecture will provide an overview of the wideband antenna technologies being proposed for the SKA. These are used to provide frequencies from 50 MHz to 15GHz using a combination of advanced Array and Reflector antennas. The system approach also includes widespread use of digital beam forming and correlation techniques such that the digital capacity is estimated to provide more than 10 times that of the current global internet.
Biography:
Professor Brown holds the Chair in Communication Engineering at the University of Manchester, UK and is Chief Technical Director of the Easat Radar Systems Group. He was Head of the School of Electrical and Electronic Engineering until 2016. Prof. Brown has been involved in antennas and propagation for over 35 years with over 100 publications on the subject including five patents and, as co-editor, the book Ultra Wide Band Antennas for Radar and Communications (John Wiley, 2008) He joined academia in 2003, initially to head the Microwave and Communications Group at Manchester, then as Associate Dean. Prior to academia he had a long industrial career with major UK companies before forming Easat in 1987. He has worked as a consultant including to a number of international Government agencies. At Manchester, Prof. Brown’s research is in antennas and propagation as applied to radar, wireless communications and radio astronomy instrumentation. |
