The 2015 International Microwave Symposium (IMS2105) features a number of Focus and Special Sessions.
Focus Sessions will highlight emerging technical topics that are gaining importance and may be of significant interest to the microwave community. These can encompass a wide range of topics that may include a specific emerging technology or may cover several technologies that are relevant to a common application. Special Sessions are formed to recognize events of historical significance to the microwave community as well as highlight the technical achievements in a specific technical area, application or geographical region of the world. Special Sessions may also recognize the life work of an MTT member by honoring their technical and/or service contributions to the microwave community. They may also encompass some select emerging technical areas.
In addition, this year we are having an Honorary Session to recognize Tatsuo Itoh's 40 years of service to MTT-S in addition to a Young Professional Discussion forum.
IMS2015 Honorary Session
This session celebrates and honors Professor Tatsuo Itoh’s long and dedicated service on the Administrative Committee of the IEEE Microwave Theory and Techniques Society. Tatsuo Itoh received the Ph.D. Degree in Electrical Engineering from the University of Illinois, Urbana in 1969. He worked at several universities and companies including the University of Texas at Austin and the University of California, Los Angeles where he is currently Professor of Electrical Engineering and holder of the Northrop Grumman Endowed Chair. He was elected as a member of the National Academy of Engineering in 2003. In 2014, he was inducted to the National Academy of Inventors as a Fellow. Dr. Itoh is a Life Fellow of the IEEE. He has a long and impressive service record. He served as the Editor of IEEE Transactions on Microwave Theory and Techniques from 1983 to 1985. He was President of the Microwave Theory and Techniques Society in 1990. He was the inaugural Editor-in-Chief of IEEE Microwave and Guided Wave Letters from 1991 through 1994. He was elected as an Honorary Life Member of MTT-S AdCom in 1994.
IMS2015 Young Professional Discussion Forum
This forum features speakers that are entrepreneurs in the field of engineering sharing their experience on building a successful company. They will highlight how their background i.e. academia, industry, etc. and experiences influenced their viewpoint and/or choices they made along the way. It includes a panel discussion exploring the need, challenges and rewards of successful engineering entrepreneurship including how some of these barriers can be avoided and/or overcome. Please see the IMS 2015 website for the panel details.
IMS 2015 Special Sessions
Prof. John R. Tucker generalized microwave mixer theory to include photon-assisted tunneling and discovered new effects leading to quantum-noise-limited millimeter-wave receivers. This theory is best known as the Tucker Quantum-Mixer Theory. The new phenomena predicted by his theory permitted essentially noiseless amplification of incoming signals during heterodyne down-conversion, a process that was previously thought impossible for resistive mixers. The experiments of other researchers on superconductor-insulator-superconductor (SIS) tunnel junctions confirmed this non-classical behavior. The quantum mixer theory revolutionized millimeter and submillimeter wavelength radio astronomy through development of SIS tunnel junction receivers operating near the fundamental limit of sensitivity for coherent receivers set by the Heisenberg uncertainty principle. SIS receivers are currently installed on all major millimeter and submillimeter astronomical telescopes. Two key examples are the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, which started operation in March 2013 as one of the world’s largest scientific instruments, and a suite of submillimeter SIS receivers flown in space for the first time as a part of the Herschel Space Telescope, launched in 2009 by the European Space Agency. This session will provide an overview of SIS quantum mixers and will give examples of the impact SIS mixer technology has had on the radio astronomy community. It will describe the development of the highest frequency (THz) SIS receivers and reproducible heterodyne receivers for large-scale radio interferometry and SIS receiver arrays.
The session will include 5G emerging technology talks on the technical areas relevant to the MTT community. All the papers in this special sessions will be presented by women in microwaves leading the development in those areas.
This focused session will tract the developments and technical innovations of power amplifier developments over the years. Transistor developments will be presented describing the various semiconductor elements used in power amplifiers from Silicon to Gallium Nitride leading to higher power, efficiency and frequency operation. The history and various circuit innovations will be presented including wideband amplifier techniques, push-pull amplifier developments, power amplifier combining, and network synthesis of matching circuits.
This focused session will tract the developments and technical innovations of power amplifier developments over the years. The popular Doherty power amplifier's history will be presented including examples of implementations employing a range of modern semiconductor transistor and circuit technologies. History and state-of-the-art in large signal modeling for RF/Microwave Power Amplifier development will be presented. Modern digital communication use efficient complex digital modulation standards which places stringent requirements of the power amplifier. To meet these requirements various linearizers will be presented including a detailed discussion of digital pre-distortion with future challenges
As Einstein observed, “One scientific epoch ended and another began with James Clerk Maxwell.” Clerk Maxwell first published what we today call Maxwell’s equations in the Transactions of the Royal Society in January 1865. This session celebrates the 150th anniversary of that publication with a review of the events leading up to and following that momentous publication. Inspired by the work of Ørsted, Faraday, Ampère, and many others, Maxwell’s equations form the basis for our entire field. Maxwell’s work, in turn, inspired and enabled the development of quantum theory, relativity, and, indeed, all of modern physics. Newton said, “If I have seen further it is by standing on the shoulders of giants.” Maxwell is our giant.
Low cost access to space or ride to orbit by piggybacking cubesats or small-satellites as a secondary-payload on a major launch vehicle is a disruptive innovation that will enable a host of new applications and unforeseen global space-business that will contribute significant technological advancement. In order for the above disruptive innovation to succeed and become a game-changer, several new technologies have to be developed and matured. This session will focus on applications of this emerging space technology in various domains including telecommunication spacecrafts, satellite navigation, remote sensing, radar imaging, earth observation, weather forecasting etc. Considerations for low cost rapid design, manufacturing and testing of components with embedded radio frequency (RF)/microwave electronics and sensors that form the complex structural elements of a cubeSat or small-satellite (micro- and nano-satellite) for the above applications will be presented. In addition, enabling technologies such as 3-D printing/additive manufacturing techniques will be presented.
Energy harvesting (EH) technologies, and particularly RF energy harvesting constitutes an exciting and very promising solution towards a completely batteryless wireless sensor operation, which could provide a critical technological foundation for numerous state-of-the-art applications ranging from healthcare, smart skins and medical implants, to smart homes, security and space. Despite recent research efforts, numerous questions exist as to whether it is possible to harvest enough ambient RF power, what is the maximum practical harvester efficiency, what are the challenges for the realization of broadband/multiband harvesters and how the combination of EH with WPT could enable the rollout of the first real-world applications relying purely on batteryless/cableless operation. The focused session brings together specialists in the field of RF energy harvesting, and aims to show recent circuital, technological and system advances addressing the aforementioned challenges.
The aim of this session is to open a discussion forum for researchers and engineers who work in the various fields of microwave engineering and science in Latin America. The session includes descriptive and technical presentations, by research groups in different areas of Latin America, aiming at conveying the activities in the fields of RF and Microwave Engineering which are currently underway in the region.
IMS2015 Focus Sessions
Increasing demands for information access and networking are driving requirements for communications systems towards data rates of 100 Gbps and beyond. In applications from long-haul point-to-point links to short-range vehicular communications, significant advances in technology are currently being developed to enable such high data rates. Approaches from millimeter-wave electronic systems to broadband millimeter-wave photonics are being investigated, each with relative benefits and challenges. This focus session will present recent advances in technologies for 100 Gbps wireless communications.
RF/THz nanotechnology represents an emerging branch of nanoscience with the potentiality to introduce unprecedented breakthroughs in microwave, millimeter-wave and THz devices and systems. As there is little doubt that RF/THz nanoelectronics will play a major role in the advancement of microwave technology in the forthcoming decades, this area represents a major opportunity for MTT-S. MTT-S is best placed to apply and extend its wealth of expertise towards the analysis, the modeling and the design of nano-structured devices and systems. The goal of this Focus Session is to provide to MTT-S attendees a glance on the state of the art of some of novel nanotechnology-based concepts, devices, systems, with an emphasis on the most significant and intriguing achievements in the THz frequency range. The program includes authoritative speakers chosen among worldwide recognized scientists, coming both from the academia and the industry. These speakers have made pioneering contributions to THz nanoelectronics, and will present some of their advances in the overall context of most recent developments around the world. Their contributions include: i) the analysis of nano-plasmonics and plasmonic terahertz optoelectronic devices as potential way to compact and low-cost terahertz sources/detectors; ii) novel concept THz imagers and spectrometers based on nanostructured semiconductors and graphene devices; iii) the introduction of an innovative graphene-based rectifier, operating @200 GHz; iv) nanoscale single-metal integrated antenna-thermocouple structure, aimed at terahertz and infrared detection, combining IR radiation, Joule heating, and the Seebeck effect. A further contribution is going to be defined.
With increased interest in using higher frequencies for mobile communication many questions remain unanswered. These questions range from debates around optimal frequency band, cellular vs. non-cellular, how the wireless changes with increased frequency and the power efficiency of radios, and how phased arrays can play a role to not only overcome the increased propagation loss but also increase the spectral efficiency by enabling simultaneous spatial links. This session will shed light to these subjects from both radio and communication angles to help generating some consensus as well as demonstrating the latest achievements intended for use in such communication systems.
Millimeter-wave remote sensing of the Earth’s atmosphere is feasible from small satellites due to the achievability of reasonable antenna beamwidths that meet spatial resolution requirements of atmospheric measurements even with limited aperture sizes on the order of 10 cm. The rapid advance of InP MMIC technology for millimeter-wave amplification has enabled miniaturization of low-noise receivers while also providing major reductions in power consumption, both critical features in small satellites with very limited resources. Satellites with low-noise microwave receivers and technology developments presented in this session demonstrate both present capabilities and future possibilities. These low-cost systems show the feasibility of constellations of remote sensing satellites, such as NASA’s Cyclone Global Navigation Satellite System (CYGNSS) Earth Ventures mission to be launched in 2016 and discussed in this session.
High interest evidenced by the growing number of published papers on non Foster circuits and their applications has brought about several different approaches to realizing stable broadband non-Foster circuits. This special session will detail recent advances in the modeling, linear and nonlinear stability analysis, and realization of these circuits that have led to successful implementations of non-Foster circuits for a variety of applications.
Today’s tactical environment is putting higher demands on network capacity and optimal use of limited spectrum in a congested spectrum environment. Adaptive, tunable and reconfigurable systems which can dynamically respond to constantly changing environments are the key for meeting the needs of the tactical environment to perform simultaneous functions including communications, electronic protection, SIGINT, Position Navigation Timing etc. This session will focus on advances in technologies which enable the implementation of tunable, adaptable and reconfigurable frontend hardware which can be used for tactical radios. The focus will be on techniques which are waveform agnostic and enable operations in a wide frequency band independent of the spectral and electromagnetic environment. The session intends to present reconfigurable RF front-ends covering wide frequency ranges capable of identifying, receiving and/or transmitting multiple waveforms. Issues such as electromagnetic interference mitigation as well as size weight and power considerations will be presented.