and Reducing Interference and Radiation Hazards
Professor Jacob Gavan
Holon Academic Institute of Technology
POB 305, Holon 58102, Israel
| Organizer: IEEE Toronto Section Electromagnetics And Radiation Joint
Chapter |
| Title: Radio Systems Techniques for Enhancing
Energy Efficiency and Reducing Interference and Radiation Hazards |
| Speaker: Professor Jacob Gavan Holon Academic Institute of Technology POB 305, Holon 58102, Israel |
| Abstract: Cellular Mobile Radio systems users and headsets are increasing tremendously and their number approach the 1000 millions. However the energy efficiency of base stations is still very low. Most of the transmitted energy and power density are wasted as interference and only a very small part is useful and reaches the desired receivers. The efficiency of headsets is even more crucial and up to 65% of the transmitted energy can be wasted in the user head and body as non-Ionized RF radiation hazards, according to several scientists. In this lecture, signal processing, power control and smart antennas techniques will be analyzed, followed by a discussion on proper shielding, diversity, filtering and parasitic power cancellation and other mitigation techniques. As well, the non-Ionized Radiation sources and the effects of radiation from base stations and from mobile headsets on users will be described. The main purposes of this talk are to investigate the possibilities for increasing energy efficiency of base stations and headsets, especially by special mitigation techniques such as: decreasing the required transmitted radiation power, reducing the power consumption of equipment, the radiated power absorbed by human, and generally radio pollution and interference. |
| Biography: Jacob Gavan earned his Ph.D. degree in radio communication in 1979 in ENSERG France. He worked as an ITU Expert from 1963 to 1967 & 1971 to 1974 and held positions in the radio communication industry. He was also an Associate Professor in Microwaves and Communication Systems at Ben-Gurion University in Israel. Dr. Gavan was nominated as IEEE fellow in 1995 and founded a department of Communication Engineering at the Holon Academic Institute of Technology (HAIT, Israel). He was selected as the Dean of HAIT new school of Electrical, Electronic and Communication Engineering in December 2002. He was Consultant in radio communications systems especially on Radio mutual Interference and Radiations effects and RF circuitry to several large Israel and international companies. He has published over 100 papers on theoretical and applied radio communication electromagnetics, and Radar Systems especially on Radio mutual Interference and Radiations effects. Professor Jacob Gavan is active in the Union Radio Science International Commission E and Chairman of E9 in "Interference in Radio Systems above 30 MHz" and Session E/F "Interference in communication". He earned the best paper award from the IEEE International Symposium on EMC., Santa Clara, September 1982 and his biography is listed in the International Directory of Distinguished Leadership. |
| Time and Location: Tuesday, April 15th, 2003, at 2:00pm Bahen Centre for Information Technology (BA) 40 St. George Street, Room BA 4287 |
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