RF Workshop on Antennas and Advanced EM Modelling (16 Dec, 2016)
NOTE: This workshop is free for those who have already registered for INDICON 2016. If one wishes to participate only in this workshop and not in the INDICON 2016 conference, then please register below (at the end of this page) - a 15% Service Tax and Explara charges are applicable over and above the registration fee.
2:00 pm - 2:40 pm: Synergy between Physical and Testing in Industrial Design
Description: Started in the 80’s as a kind of black magic, today, the electromagnetic modelling plays an essential role in the design and development of complex systems for many different applications. The continuously increase for new stimulating applications and the need to integrate more and more functionalities on complex platforms pose new challenges and requirements for the development of novel methodologies and procedures in electromagnetic modelling. This workshop is aimed to present some of the latest achievement in the usage of advanced electromagnetic modelling tools for aerospace, naval and new emerging industrial field.
The advances in numerical modelling have permitted the introduction of Virtual Testing in the industrial design cycle. Obviously the Physical testing maintains his role in the verification phase and in the assessment of the performances of the device. This paper investigates the less obvious synergies between the two approaches and how they can leverage and improve the industrial design flow.
2:40 pm-3.15 pm: Defected Ground Structure (DGS) Integration Technique for Planar Antennas
Description: Advances in Wireless Technology demand the efficient devices capable of operating high data-rates and at low signal power. The microwave researchers have been working towards the development of advanced RF front ends to meet these requirements. Various novel approaches have been explored in the recent years in view of developing new generation low profile antennas.
This talk is aimed to address a new technique developed over the last decade and find potential applications in designing advanced antennas using printed circuit technology. The technique involves deliberately created defects on the ground plane, termed as Defected Ground Structure or more popularly ‘DGS’. This specifically implies a single or a limited number of defects on the ground plane and has been familiar to microwave community for a long time, although their application to antenna engineering is relatively new.
The DGS actually evolved in early 2000’s as a simpler variant of Electromagnetic Band Gap (EBG) structure. The EBGs are periodic in nature exhibiting a property of preventing the electromagnetic (EM) waves to propagate through them over a range of frequencies, called ‘stop-band’ and allowing the EM waves to propagate over a range of frequencies, called ‘pass-band’. Thus, a DGS stands for a simplified EBG realized as a defect on the ground plane of a planar microwave circuit or antenna. A DGS is primarily of resonant in nature and may have different shape and size with different frequency response. The evolution of DGS, physical insight into the design and a chronology of its major developments will be discussed.
In 2005, the DGS was explored by the author for the first time for antenna application, in particular, to improve the radiation characteristics. In 2006, DGS was successfully applied by the author and his research group to antenna arrays to minimize its mutual coupling problem. Subsequently, antenna community had realized its tremendous potential and explored the techniques extensively leading to many possible applications. More elaborate authentic documentation was published as a book chapter.
3.15 pm-3.35 pm: Antennas for Defense Application
Description: In this Talk Antenna system for various defense applications will be discussed and presented.
3:35 pm-4.00 pm: Tea/Coffee/Networking
4.00 pm-4.40 pm: The Expanding Role of Electromagnetic Simulation in Aircraft Type Certification
Description: New regulations and new aerospace materials drive up the cost and complexity of type certification. Advances in simulation capability and validation accuracy have greatly increased the use of electromagnetic simulation as a method of compliance to combat the rise in cost and program schedules. In this presentation, we describe the new role for these tools along with how they can be used to enhance testing to reduce overall program cost, duration and risk.
4:40 pm - 5:20 pm: Non-conventional EMC modelling for Space application and Non-Conventional EM Measurements by Drones
Description: The first part of the presentation will discuss the benefits of EM modelling for non-conventional EMC (electromagnetic compatibility) problems such as the modelling of antennas mounted on re-entry vehicles in the presence of plasma cloud and analysis of the interaction of antennas with plasma plume emitted by ion thrusters.
The second part of the contribution will present some of the M/S IDS experience in the area of EM measurement by Drones.
5:20 pm - 5:40 pm: Indian Deep Space Network – Communicating to Planets and beyond
Description: The tenuous link between earth and those spacecraft that explore our solar system relies heavily on ground antennas. Indeed, antennas are often used to symbolize the earth based end of the deep space telecommunication link because of their physically dominating presence at ground stations. The large aperture size if of course associated with high gain, a pre-requisite for the signal starved deep space telecommunications environment. Ground stations have evolved considerably since the first missions that went beyond earth orbit. Station complexity and performance have increased significantly to meet the more ambitious and challenging mission goals, higher telemetry rates for increased science return, increased operating distances to enable exploring the solar system and beyond. Ground antennas are a key part of the complete microwave receiving system that includes feeds, low noise amplifiers, cryogenics and other microwave components.
One of the major functions of the deep space communications is the dual purpose consists of an uplink (for commanding) and downlink for monitoring the health of the spacecraft. Additionally the downlink is used to transmit the data from onboard science instruments or payload data from the interplanetary spacecraft or probe. Another important application of these links is to provide radiometry data to navigate the spacecraft and to support various radio science experiments. The radiometric navigation technique uses the concept of Very Large Base Interferometer (VLBI). Adding a second source like quasar near the deep space probe with tones emitted from the space probe, the accuracies are improved further by using a technique called delta Differential One way Range (DDOR) and the measurement time is drastically reduced by using these techniques. This differential propagation time-delay techniques largely cancel the common error sources and normally achieve low angular coordinate errors. The techniques are capable of providing accuracies which are one order better than the conventional tracking techniques and are widely used in current space science missions.
Debatosh Guha is a Professor in the Institute of Radio Physics and Electronics, University of Calcutta, India. He is also associated with the department of Electronics and Electrical Communication Engineering of the Indian Institute of Technology Kharagpur, and served the same as HAL Chair Professor.
He received the B.Tech. and M.Tech. degrees from the University of Calcutta in 1987 and 1989, respectively and started his career as Project Engineer in Webel Telecommunication Industries Limited. After graduating with a PhD in microwave engineering from Calcutta University, he joined the same University as an Assistant Professor in 1994. He spent about two years with the Royal Military College of Canada, Kingston, Ontario as a Visiting Research Professor working largely on the developments of various low profile microwave and wireless antennas.
He has researched in developing microstrips and dielectric resonator antenna technologies. Defected Ground Structure (DGS) -inspired antenna is one of his major areas of contribution. He has published 70+ papers in top Journals, 150+ conference articles, and a Book entitled ‘Microstrip and Printed Antennas: New Trends, Techniques, and Applications’ from Wiley, UK. He developed commercial indoor/outdoor wireless antennas for a North American industry operating since 2007.
Professor Guha is a Fellow of the Indian National Academy of Engineering (INAE), National Academy of Sciences, Indian (NASI), West Bengal Academy of Science and Technology (WAST), and the Institution of Electronics and Telecommunication Engineers (IETE). He is a Senior Member of IEEE and recipient of some notable awards which include IETE Ram Lal Wadhwa Award 2016 (New Delhi), IEEE AP-S Raj Mittra Travel Grant Award 2012 (Chicago); URSI Young Scientist Award 1996 (Lille, France); and Jawaharlal Nehru Memorial Fund Prize 1984 (New Delhi).
He is an Associate Editor of IEEE Transactions on Antennas and Propagation, IEEE Antennas and Wireless Propagation Letters and a Section Editor of INAE Letters. He served IEEE Kolkata Section as the Chair (2013-2014); IEEE AP-MTT Kolkata Chapter as the Founding Chair (2004) and Chair (2010-2011). He conceptualized and initiated two flagship IEEE sponsored conferences in India in 2007 and 2010 in the fields of Electromagnetics and Antenna Engineering.
His current research interests include DGS-integration technique for advanced antenna design, unconventional modes and their applications in Dielectric Resonator Antennas, wideband and ultrawideband antennas, Specific antennas for space and wireless industries.
Education: University degree (110/110 cum laude) in Electronic Engineering from the University of Napoli, in 1995 with thesis work on Numerical methods for analysis of bifurcations and chaos in the nonlinear dynamics of transmission lines
Present position: Senior Engineer “Electromagnetic Engineering Division (EME)” at IDS.
Activities and professional experiences of interest:
- Signal and Power integrity analysis at Printed Circuit Board level
- EMC design best practice
- RF and antenna design, EMC analysis and design for electronic systems for earth station, naval, avionic and space environments;
- CAE tools design for electromagnetic applications;
- Electromagnetic methods and application to industrial application: numerical methods (Method of Moments, FEM, FDTD, MTL, asymptotic methods (GTD, PO, PTD) modeling of e.m. radiation interaction with complex environments; patch array design;
- Lecturer for EM simulation, Signal integrity and EMC in several Italian and international Universities
Giancarlo published original papers at international meetings and on technical journals, on topics related to his relevant experience.
Education: University degree (110/110) in Electronic Engineering from the University of Pisa, in 1996 Performance evaluation of an XATOM type ATM switch.
Present position: Senior Engineer “Electromagnetic Engineering Division (EME)” at IDS.
Activities and professional experiences of interest:
- Joined IDS Corporation Italy in 1998 as a System Analyst focusing on analysing and solving numerous customer problems in the Aerospace/Defence application fields involving antenna siting, installed system performance evaluation and EMI/EMC problems.
- Electromagnetic methods and working procedures for industrial application in the field of HIRF and lightning
- Responsible for electromagnetic software products of the Aeronautical Division: product upgrades definition, pre-sales and post-sales and technical support on specific application
- Electromagnetic engineering best practice
- CAE tools for electromagnetic application
Antonio published original papers at international meetings and on technical journals, on topics related to his relevant experience.
Dr D. R. Jahagirdar received his B.E. degree in Electronics Engineering in 1990, from Govt. College of Engineering, Amravati University, Maharashtra, India. He received M.Tech. in Microwave Engineering in 1992, from Indian Institute of Technology, Kharagpur, West Bengal, India. He was a Research Assistant at Sponsored Research and Industrial Consultancy at IIT, Kharagpur. In 1992 he joined Antenna Products Division of Electronics Corporation of India Hyderabad.
In 1994, he received scholarship from the Commonwealth Scholarship Commission, UK to pursue his PhD. He obtained Ph.D. in 1997 from the Department of Electronics and Computer Science, University of Southampton, UK. He has won 'Best Paper Award' at the third IEEE High-Frequency Postgraduate Student Colloquium 1997 at the University of Leeds, UK organized by IEEE UKRI section. He joined Research Center Imarat, DRDO, Hyderabad in May 2000. In 2002, he received Prof.S.K. Mitra memorial award for 'Best research oriented paper' from IETE. He received 'Young Scientist Award' at Intl Radar Symposium Bangalore in 2005. In 2007 He received 'Laboratory scientist of the year award. In 2010 he received 'DRDO Scientist of the year' from Prime Minister of India. He has 52 papers published in various international conferences and journals. He is a reviewer in IEEE AP society's transactions on antennas and propagation. He was also guest editor for some time in MTT society's transaction. He was technical program chair for IMARC-2015 conference in Hyderabad. He is external guide for many PhD students. He is a Fellow of IETE and senior member of IEEE, Antennas and Propagation Society and Microwave Theory and Techniques Society and Aerospace and Electronics society, Communication society. He is also a member of URSI. His area of interest is microwave antennas and arrays. At present he is group head in Radar seekers Lab of RCI, DRDO.
V.V. Srinivasan obtained his M.Tech degree in Microwave Electronics from Delhi University, India, in 1986. Subsequently he joined ISRO and was involved in the development of antennas for spacecrafts, airborne radar applications and ground station antennas. His area of work includes phased array antennas for spacecraft applications, microstrip antennas and arrays, high efficiency – light weight reflector antennas, broadband antennas, ground station antennas, feeds for reflector antennas. Spaceborne Phased Array Antennas with dual circular polarization capability is designed by him have been flown and widely used to transmit high quality images in state of the art remote sensing satellites. His area of work also includes ground station antennas including RF design of the antenna and associated feeds. Important contributions have been made in the design and realization of the 32mtr beam waveguide ground station antenna of ISRO (IDSN-32). Currently he is Deputy Director at the ISRO Telemetry, Tracking and Command Network and is taking care of the Ground Station Network Area and Radar Development Area. He has published about 100 technical papers in various national / international conferences and journals. He is an active IEEE volunteer and served the Bangalore section in various capacities and chaired the section in 2010 and 2011. He is a Senior Member of IEEE.