Odjel za antene i širenje elektromagnetskih valova
Odjel za teoriju i primjenu mikrovalova (MTT), Odjel za antene i širenje elektromagnetskih valova (APS), Združeni odjel AES i GRS, Odjel komunikacijskih sustava HATZ te Zavod za radiokomunikacije Fakulteta elektrotehnike i računarstva pozivaju vas na predavanje:
Design, Fabrication and Test of a Low-Profile Highly-Integrated Ka-Band Array
koje će održati Dr. Boris Tomasic, Air Force Research Laboratory (AFRL), Sensors Directorate, Ohio, USA.
Predavanje će se održati u utorak 27. rujna 2016. u 11:00 sati u Sivoj vijećnici FER-a, zgrada D – prizemno.
Sažetak predavanja i životopis predavača nalaze se u nastavku obavijesti.
Many military and commercial systems on airborne and space platforms require wide-band, compact, low-weight and high gain conformal Electronically Scanning Arrays (ESAs). All these requirements drive the operational frequencies into millimeter-wave bands and beyond, which gives impetus for the development of new technologies and innovative ESA designs that will meet stringent requirements, and at the same time be affordable.
In this work, we have designed, fabricated and evaluated a 16x4 - element low profile, compact, and highly integrated Ka-band array, which could be also the subarray (flat facet) of a larger conformal ESA. The array was fabricated in a Low-Temperature Co-Fired Ceramic (LTCC) technology using commercially available Ferro A6M tape layers. The LTCC process was selected because it offers a high level of integration and has excellent physical and electrical properties. The array was implemented in the form of a multi-layer structure which combines the radiating aperture, beamforming network, DC power distribution network, array digital control network and Transmit/Receive (T/R) modules into a compact, fully operational ESA. The array thickness, without T/R modules, is about one eighth of an inch which makes this design attractive for conformal applications in military and commercial radar and communication systems.
Boris Tomasic was born in Rijeka, Croatia, on August 8, 1945. He received the Dipl. Ing. degree in electrical engineering from Fakulteta za Electrotehniko, Univerza v Ljubljani, Slovenia, in 1971 and the M.S. and Ph.D. degrees in electrical engineering from Polytechnic Institute of New York, Brooklyn, NY, in 1975 and 1981, respectively.
From 1975 to 1980, he was a Research Assistant at Polytechnic Institute of New York, performing research on conformal and planar array antennas. Since 1981 he has been with the Air Force Research Laboratory (AFRL), Sensors Directorate, first at Hanscom AFB, MA and presently at Wright-Patterson AFB OH. From 2007 to 2011 he was the Technical Advisor in the Antenna Technology Branch which has the responsibility for developing the technology base for antennas within the Air Force. Dr. Tomasic is responsible for planning and conducting research and development studies in the field of electromagnetic radiation, propagation and diffraction. His research interest is in the areas of antenna theory, planar and conformal phased arrays for airborne and space applications, mm-wave electronically scanned array antennas, digital beamforming, and metamaterials.
From 1981 to 1990, he was adjunct faculty member at the University of Massachusetts teaching graduate courses in electromagnetics and antenna theory. Dr. Tomasic is a member of Sigma Xi, URSI Commission B, and senior member of IEEE. From 1986 to 1989 and from 1997 to 1999 he served as associate editor for IEEE Transactions on Antennas and Propagation. He is an Air Force Research Laboratory Fellow and recipient of the 57th Annual Department of Defense Distinguished Civilian Service Award.