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| Last updated 20 April, 2009 |
Future Special Issues
Details of Special IssuesAntennas and Propagation Aspects of 60-90GHz Wireless CommunicationsRecently, there has been both a technology push and a market pull for gigabit wireless communications systems operating at the millimeter-wave frequency bands around 60GHz and 80GHz. Owing to the high atmospheric absorption at 60GHz, this frequency band is suited for short range communications. In fact, the propagation loss can be exploited to prevent eavesdropping, reduce interference and increase frequency re-use. A typical application is indoor wireless personal area networks (WPAN) where all the network nodes are contained in a single room and the communications range is typically less than 8m. There is a large portion of unlicensed spectrum between 57GHz – 65GHz available worldwide for this type of systems. The 71-76GHz and 81- 86GHz frequency bands are suited for point-to-point fixed links as the atmospheric attenuations are mild. The 94GHz band is attracting growing attention for imaging. Challenges faced in antenna and propagation research for these applications differ significantly. In the case of WPAN, the challenges are in low cost, high gain and adaptive antenna systems. With the current state-of-art silicon millimeter-wave integrated circuit design, it is necessary to have an antenna gain of about 7dBi to provide wireless USB with up to 3 meter distance, and greater than 14dBi or even 20dBi to obtain acceptable system performance and range for wireless high definition entertaining networks (WirelessHD). For fixed links such as backhaul applications, however, the antennas are typically highly directional and physically large in order to reach the distance of several kilometers and provide a good margin for fades in undesirable weather conditions. The objective of this Special Issue is to report on recent advances in antennas and propagation for 60-90GHz wireless communications. The issue will include both invited and contributed papers. Topics of interest include, but are not limited to: low-cost and high gain antennas, adaptive and multi-input and multi-output (MIMO) antenna systems, antennas on IC and in package, novel mm-wave feed networks and components, electromagnetic analysis techniques for large millimeter-wave arrays and packaging, propagation modelling and measurements. Manuscripts should conform to the requirements for regular papers as specified in the Information for Authors on the inside back cover of the IEEE Transactions on Antennas and Propagation and the Transactions web site (http://www.ict.csiro.au/aps). Potential contributors may contact the Guest Editors by e-mail (see contact information provided below) to determine the suitability of their contribution to the special issue. All invited and contributed papers must be submitted through the AP Transactions Manuscript Central web site (http://tap-ieee.manuscriptcentral.com), with a statement to the Editor-in-Chief of the IEEE Transactions on Antennas and Propagation, Dr. Trevor S. Bird, that they are intended for this Special Issue. Guest co-editors:
Antennas for Next Generation Radio TelescopesRadio telescopes are transitioning to a new generation of faster and more sensitive instruments, and technology demonstrators for projects such as the multi-billion dollar Square Kilometer Array (SKA) are undergoing rapid development internationally. These efforts have focused attention on research issues associated with novel antenna technologies for radio astronomy. The intention of the Special Issue is to describe some of the recent developments from these major worldwide radio astronomy instrumentation efforts with an emphasis on the antenna and radio frequency technologies. Topics of interest include multi-pixel approaches based on broadband phased array aperture antennas and phased array feeds, broadband single-pixel feeds, numerical modeling, design optimization, array calibration, beamforming, and experimental results. It is anticipated that one of the main emphases will be the connection between electrical and electromagnetic antenna properties and the system-level performance requirements for efficiency, sensitivity, field of view, imaging dynamic range, and polarization purity. Various antenna configurations are under investigation, with the desire for continuous field of view, low system noise, and high aperture efficiency over wide bandwidths (2:1 or more). These comprise new antenna array concepts that achieve the performance requirements through optimal co-design of the antenna and low-noise front ends. This presents significant challenges in computational electromagnetics and in understanding the behavior of an array and its mutual interaction with low noise amplifiers (LNAs). Current research issues include the development of appropriate performance metrics and measurement techniques for strongly coupled, high sensitivity arrays, reducing the cost of construction, alignment and maintenance of these new instruments, low noise CMOS LNAs, integrated broadband receiver-on-a-chip, and active impedance matching. Papers on these topics and others related to antenna development for radio astronomy are solicited for the Special Issue. Manuscripts should conform to the requirements for regular papers as specified in the Information for Authors on the inside back cover of the IEEE Transactions on Antennas and Propagation and the Transactions web site (http://www.ict.csiro.au/aps). Potential contributors may contact the Guest Editors by e-mail (see contact information provided below) to determine the suitability of their contribution to the special issue. All invited and contributed papers must be submitted through the AP Transactions Manuscript Central web site (http://mc.manuscriptcentral.com/tap-ieee), with a statement to the Editor-in-Chief of the IEEE Transactions on Antennas and Propagation, Dr. Trevor S. Bird, that they are intended for this Special Issue. Guest co-editors:
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