eNewsletter

August 2008

Computer Simulation Helps Design Wearable Antennas for Future Force Warrior

XFdtd Model

Future Force Warrior (FFW) is the Army’s flagship science and technology initiative to develop a lightweight, fully integrated combat system including weapon, head-to-toe protection and netted communications. A key part of FFW is providing conformal body worn antennas that have sufficient gain regardless of the warrior’s position. In designing a wearable antenna for the FFW program, MegaWave Corp. found that one of the greatest challenges was simulating the impact of the human body on the antenna’s performance. MegaWave engineers simulated these effects with finite difference time domain (FDTD) software that accurately models the effects of the body by representing it with a material having the properties of a saltwater body as described by Siwiak [Radiowave Propagation and Antennas for Personal Communication, Artech House, 1995]. The simulation determined impedance and radiation patterns of the initial design concepts. MegaWave engineers used the results to understand and improve their initial designs.

MegaWave's engineering team brings more than 80 years of combined experience in electromagnetic engineering, radio wave propagation and computational electromagnetics to the problem of designing antennas to meet the communications and end-user needs of the 21st century. The company’s military customers have included the Defense Advanced Research Projects Agency, the United States Army Communications and Electronics Command (CECOM), the US Army Natick Labs, the United States Navy and the United States Special Operations Command (SOCOM). The US Army’s Communications and Electronics Research and Development Center (CERDEC) at Fort Monmouth enlisted MegaWave to assist with the development of new antennas for the FFW program which is intended to provide robust team communications during combat.

Tough Performance Requirements

Figure 1. Measured azimuthal radiation patterns as a function of frequency (vertical polarization)

FFW antennas were required to provide approximately equal performance in all soldier positions, i.e. when the soldier is standing, and when the soldier is in the prone position. The wearable antennas also needed to be compatible with and fit on the FFW ensemble and not interfere with the soldier’s mobility. The antenna design was thus constrained by needing to be conformal to the FFW ensemble, to avoid any snagging hazard which might impede the soldier’s mobility and to operate in the presence of the warfighter’s ballistic armor plates.

The tough performance requirements for the wearable antenna concept made simulation essential for quickly and inexpensively evaluating a wide range of designs. The challenge was simulating not just the performance of the antenna, but also the effects of the human body and the armor plates worn by the soldier. MegaWave engineers considered a number of modeling tools, but the requirement to include the human body and armor plates ruled out some approaches.

FDTD Simulation Speeds Antenna Design

Figure 2. XFdtd computed azimuthal radiation patterns as a function of  frequency (vertical polarization)

MegaWave engineers decided to use XFdtd software from Remcom, Inc., State College, Pennsylvania, which incorporates a full-wave, three-dimensional solver based on the finite difference time domain (FDTD) method. “MegaWave was one of Remcom’s first customers for XFdtd. We originally selected this program because it offered superior price and performance to other alternatives available at that time,” said Glynda Benham, president of MegaWave. “We have seen the software make steady improvements over the years. Version 6 made particularly important advancements such as the ability to generate and display the antenna VSWR in addition to S parameters. Another major new feature is adaptive meshing which automatically generates a finer mesh in areas where more accuracy is needed while using a coarser mesh in other areas to reduce computational requirements.”

Adaptive meshing capabilities reduce solution times while maintaining high levels of accuracy by automatically adjusting the mesh to provide more cells in areas with high transients and reducing cells in areas where there is less variation. In addition, the use of a distributed memory parallel computational code allows for cluster computers to be utilized in order to perform calculations faster as well as allowing larger model sizes. While not providing the large memory of a cluster computer, another approach to providing fast calculations is XFdtd’s XStream hardware option. This utilizes the ability of the Graphics Processing Unit (GPU) in modern computer graphics cards to stream floating point calculations to achieve extremely fast calculation speeds. Results depend on the size of the FDTD mesh, but for calculations that fit within the memory constraints of the cards, calculation times are on the order of, or faster than, a 32 node computer cluster.

XFdtd provides a wide range of features for modeling electromagnetic interactions with the human body. For example, Remcom provides a high fidelity male head and shoulders mesh, male body mesh and female body mesh that provide highly accurate detail for modeling internal body structures. This is particularly useful when internal EM fields are important such as with implanted medical devices. MegaWave’s experience has been that the full body model is not necessary for many antenna computations and that computations based on the simplified body model agree very well with measured data.

Modeling the New Antenna Design

Figure 3.  Antenna system

Deliang Wu, Senior Antenna Engineer for MegaWave, developed a simplified human body model by creating a geometry with the right proportions and modeling it as a saline solution with properties that closely match those of the human body. “We knew that the soldier’s body and armor plates would have a major effect on the antenna performance so we included them in our very first model,” Wu said. His first pass for the antenna consisted of a two element array with one element on the front of the ensemble and the other element on the back. Each wideband dipole element was sized to fit in the available area.

In practice, the two antenna elements are fed in phase through a combiner. In the FDTD model, the isolated elements are excited by in-phase voltage sources. The coaxial feed cables and the combiner are not included in the model. XFdtd determines the impedance of the individual elements and the radiation patterns of the array as a function of frequency. The electromagnetic field in each cell is calculated by the software through time domain solution of Maxwell’s equations. Electromagnetic simulation takes only a small fraction of the time and expense involved in building and testing wearable antennas. Simulation also provides more information than physical experiments by yielding results at every point in the solution domain, far exceeding the results that can be achieved with physical measurements. Wu evaluated a large number of alternative designs in order to optimize the perform ance of the antenna relative to the customer’s requirements.

Using XFdtd, MegaWave engineers can create and evaluate a number of design iterations per day, making it possible to reach an optimized design in a short period of time. Furthermore, simulation helps engineers gain an understanding of the sensitivity of various design parameters providing much faster optimization of design than in the past. Wu adjusted the detailed design parameters to match the feed point impedance of the two antenna elements, maximize the gain and achieve a total field pattern that is nearly omnidirectional.

Physical Testing Confirms Simulation Predictions

MegaWave then built a prototype of the antenna and measured it mounted on a salt water phantom. The antenna performance closely matched the simulation results as seen in Figures 1 and 2 (the radiation patterns are mirror images due to measured data being collected in the opposite rotational sense to the computed data). The final antenna system is shown in Figure 3, and also installed on the FFW ensemble in Figure 4.

For each new antenna, the company’s engineers will go back to the original XFdtd model and make changes to meet the new performance requirements. “FDTD simulation helped us evaluate a wide range of antenna designs in a fraction of the time that would have been required to build and test prototypes,” Benham concluded. “As a result, we were able to quickly iterate to a design that met the Army’s requirements.”

For more information visit Remcom at www.remcom.com or Visit Megawave at www.megawave.com

2008 Antenna Systems Conference: Huge Team Discounts Available.
- September 25-26 • Hyatt Regency Austin • Austin, Texas

The Antenna Systems Conference is the world’s leading conference on the latest advancements in antenna systems and technology. The two-day technical event offers an exceptional opportunity to network with peers, professionals and potential business partners involved in technology solutions serving a variety of applications. See the latest products, services and systems available and discover what's coming next. Learn the latest business and application developments in antenna markets worldwide.

Huge Team Discounts Available!
Register 2 or More Attendees - $600 is deducted from each attendee's registration fee*
Register 3 or More Attendees - $700 is deducted from each attendee's registration fee*
*Team Discount Prices are reflected below

The 2008 Antenna Systems Conference will feature more than 35 technical sessions from today’s leading wireless solutions providers.
Visit the Final Program Online at http://www.antennasonline.com/ast08_program.php

Register online today - http://www.antennasonline.com/ast08_reg.php

For more information contact Jeremy Martin (jeremym@infowebcom.com).

C-COM Receives $650,000 Antenna Order

C-COM Satellite Systems Inc. has received an initial order for $650,000 US for a number of its iNetVu Mobile satellite antenna systems from an Asian television station. The antennas will be deployed by the TV station for satellite news gathering.

"The market for Satellite News Gathering antenna systems using high performance cost-effective antennas such as the iNetVu is starting to gain momentum in Asia. C-COM has a number of SNG units already deployed in North America, China and Europe and we are pleased to see that the demand from other Asian countries is starting to materialize as well. Many TV stations worldwide are in the process of upgrading their satellite news gathering capabilities by acquiring high performing cost-effective SNG systems and the iNetVu is well positioned to meet this need" said Leslie Klein, President and CEO of C-COM Satellite Systems Inc.

For more information visit www.c-comsat.com

CalAmp Awarded Additional Smart Antenna Patents

CalAmp Corp., a provider of wireless products and engineering services, was recently awarded two new US patents titled, Calibration methods and structures in wireless communications systems (Number 7,392,015) and Adaptive beamforming methods and systems that enhance performance and reduce computations (Number 7,339,979). The ‘015 patent outlines a system and method for wireless transceivers that receive and transmit signals from an array of antennas that are connected to spatial processing channels. The patent’s claims cover calibration methods and structures that compensate for the relative gain and phase errors of transceivers utilizing frequency-domain spatial processing algorithms. The ‘979 patent outlines computational methods which increase real-time performance and reduce implementation complexity and cost by processing spatial information progressively on delay-optimized subarrays.

These two patents are the latest of a series of five patents awarded to CalAmp related to smart antenna technology. Other related patents that have previously been awarded include Wireless communications structures and methods utilizing frequency domain spatial processing (Number 7,072,693), Wireless communication structures and methods with enhanced range and performance (Number 7,035,652) and Spatial-temporal methods and systems for reception of non-line-of-sight communication signals (Number 6,947,507).

CalAmp's smart antenna development has resulted in beamforming technology that can be leveraged to enhance the performance and coverage of wireless networks such as WiFi (802.11), WiMAX (802.16), broadband wireless access in “white space” UHF frequencies and 700 MHz mobile. It uses multiple antennas and powerful digital signal processing to dynamically form an antenna pattern optimized for each network user, based on interference and other wireless channel conditions. The complex spatial processing cancels interference by better utilizing high multipath, non-line-of-sight channels, thereby substantially improving data throughput performance. These performance improvements and the reduction of “dead spots” can significantly enhance the user experience, in particular with demanding and often mobile applications such as Voice over IP.

For more information visit www.calamp.com

Lockheed Martin Breaks Ground on $15 Million Advanced Radar Test and Measurement Facility

Lockheed Martin recently broke ground on a $15 million, 9,600 square foot radar test facility that will provide the company with one of the world’s most advanced, large-antenna measurement systems.

The new 80-foot tall structure will be added on to the existing EP-6 building at Lockheed Martin’s Radar Systems facility in Syracuse, NY.  Once complete in summer 2009, the facility will house one of the largest high-precision, spherical near-field radar test and measurement systems.

The new facility will house state-of-the-art measurement equipment that will be used to design, analyze, characterize and test future radar systems ranging from the smallest systems to next-generation digital phased array systems. It will have the capability to perform highly-accurate antenna, radar system and radar cross-section measurements at a wide range of frequencies. The equipment will allow users to fully automate a precision antenna measurement process from set–up through analysis and report generation.
A key component of the facility will be its electromagnetically-shielded anechoic chamber. Lined with special foam to absorbs radio frequency (RF) radiation and suppress potentially interfering external acoustics and frequencies, the chamber will provide greater test security of sensitive government equipment.

“Our new radar test facility will support next-generation sensor development for 21st-century radar systems with extremely accurate and rapid antenna signal characterization capabilities,” explained Carl Bannar, vice president of Lockheed Martin Radar Systems.  “The facility’s design will ensure that our customers’ requirements for protecting allied troops and providing homeland defense are met for the most demanding applications.”

For more information visit www.lockheedmartin.com

Workshop Provides Opportunity to Spend a Day with Antenna Experts
Only 15 Spots Still Available!

Taking place Sept. 24 at ETS-Lindgren’s Test Facility in Cedar Park, Texas, this full day workshop will cover current and future trends related to antenna and wireless test and measurement. The technical material will be of a practical nature and application oriented with supporting theory provided. Presented by leaders in the industry, the workshop will address antenna design and usage, wireless testing methods available and rationale as well as future trends for antenna and wireless technologies.

Special guest speaker, Dr. Warren Stutzman, will begin the program by addressing the basic principles of antennas as applied to wireless communication systems. The fundamental types of antennas (electrically small, resonant, broadband and aperture) will be discussed, including examples of popular antennas for base stations and for satellite, vehicular and handheld terminals. Array antenna basics will be introduced. Special considerations for popular systems such as cellular radio and ultra-wideband radio will be presented. The presentation will conclude with a photo presentation of antennas in practice.

ETS-Lindgren speakers Dr. Vince Rodriguez and Jari Vikstedt will address test and measurement methodology for wireless devices drawing on their experience as key contributors to the organizations that are driving the technology for wireless testing, such as the Wi-Fi Alliance, CTIA 802.11 WPP and the WiMAX Forum, as well as the American National Standards Institute (ANSI) C63 (Electromagnetic Compatibility) and IEC/CISPR A related to antenna calibration, RF shielded enclosures and RF absorber.

Time will be allocated following each presentation for open discussion. Hands-on demonstrations will supplement the material presented utilizing the expansive ISO 17205 certified open area test site, A2LA-accredited lab and wireless test chambers on site at ETS-Lindgren.

Special Bonus!
Schedule permitting, Dr. John Norgard of the University of Colorado - Colorado Springs, IEEE Fellow and Vice-President for Technical Services of the IEEE EMC Society, will address a unique method using antennas for selected validation and verification (FSVV) of computational electromagnetic (CEM) code predictions using IR thermal images of EM fields. Dr. Norgard will also share his latest research on 3D microwave tomography as related to waveform diversity and distributed sensors for detecting and imaging buried objects with suppressed electromagnetic interference (EMI).

Schedule:
12:00 pm:                Pick up at Hyatt Regency Hotel
12:30 - 2:00             Tutorial #1 with Dr. Stutzman,
2:00 - 3:15               Tutorial #2 with Mr. Jari Vikstedt,
3:15 - 3:45               Snacks/Beverages
3:45 - 5:00               Tutorial #3 with Dr. Vince Rodriguez
5:00 - 6:45               Facility Tour / Demonstrations / Texas Style BBQ Buffet Dinner
7:00 pm                   Drop off at Hyatt Regency Hotel

Registration: $400
* A $150 discount is available to workshop attendees who also register for a full conference pass to attend the 2008 Antenna Systems Conference, taking place Sept. 25-26 at the Hyatt Regency Austin in Austin, Texas.

Get More Details - http://www.antennasonline.com/ast08_workshops.php
Register Today - http://www.antennasonline.com/ast08_reg.php

ASC Signal Introduces New 4.6 Meter Trifold Antenna

ASC Signal Corp., (formerly Andrew Corp. Satellite Communications Group), has launched its new 4.6 Meter Trifold Transportable antenna, which is F-1 and E-2 Ka-band compliant.

Developed specifically to meet a wide range of regulatory standards, including Intelsat's standard F-1 and E-2 specifications, ASC Signal's 4.6 meter antenna compliments the ASC Signal 3.7 meter and 4.5 meter Trifold antenna products. This new antenna is Ka-band compliant, designed for C band and Ku-bands, and can be used worldwide in transportable applications serving high-density data, voice and communications networks.

Distributed across the globe, the antenna uses a Trifold reflector, which is cut from a single piece of precision spun aluminum. It features interchangeable feeds, as well as dual skin reflectors for good rigidity and lower RMS. With its tracking and non-tracking controllers, this antenna also has a patent pending dual azimuth drive, created for accuracy.

For more information visit www.ascsignal.com

Panorama Antennas Introduces New Range of High Performance Multiband M2M Antennas

Panorama Antennas, an antenna and RF solutions company has made available a new range of high performing M2M antennas for embedded device applications. The TC antenna range represents an effective and cost efficient solution to the problem of combining multiple transition methods in a single device.
When space, cost and lack of ground plane are an issue the TC range comes into its own. Industry standard UFL connectors mounted on the board make it extremely adaptable. The pre-drilled mounting holes leave the installer with the freedom to position the antenna wherever it needs to go.

"With the new range of TC antennas, we can offer a broad range of standard off-the-shelf antennas for Quadband GPRS, 3G UMTS, 2.4GHz WLAN, Bluetooth and ZigBee without compromising on performance, making it an ideal one-size-fits-all product for metering systems, equipment monitoring and any other applications involving the transmission of data over cellular networks," said Christopher Jesman, managing director, Panorama Antennas.

For more information visit www.panorama.co.uk

8-Channel UHF Multiplexer Allows Several UHF Antennas to be Connected to One UHF Reader

With the new 8-channel UHF Multiplexer ID ISC.ANT.UMUX from Feig Electronic, several UHF antennas can be connected to one UHF Reader.

So the costs for reader hardware can be much reduced for Multi-Antenna-Applications. The 8-channel UHF Antenna Multiplexer ID ISC.ANT.UMUX is used for switching of RFID Antennas with operating frequencies from 860 – 960 MHz. With a ID ISC.ANT.UMUX, several antennas can be operated with only one reader.

It is possible to cascade several ID ISC.ANT.UMUX to improve the possible number of antenna connectors. That for, the Antenna Multiplexers can be addressed via DIP switch positions. The Multiplexer is controlled via antenna cable to the reader, so there is no additional connection necessary. This enables an easy installation even if several Multiplexers will be cascaded. At the same time, a targeted addressing of the antenna output is possible.

For more information visit www.feig-electronics.com

850 and 900 MHz GSM-UMTS Same Band Combiners

Powerwave Technologies, Inc., a global source for end-to-end wireless solutions, has introduced the latest offering in its growing line-up of coverage and capacity solutions for indoor and outdoor environments - a Same Band Combiner that offers both cost savings and time to market efficiencies for wireless operators.

Designed to support 850 MHz or 900 MHz GSM and UMTS systems on a common antenna, Powerwave’s Same Band Combiner allows for fast, efficient deployment of UMTS 850 or 900 services on the same antennas as existing GSM 850 or 900 services. Since it reuses existing GSM system antennas and feedline structures, the Same Band Combiners therefore provide zero impact to the tower’s wind loading profile while reducing time-to-market deployment issues for introduction of new UMTS services.

For more information visit www.powerwave.com       

New Text Details Cutting-Edge Antennas for Fourth Generation Wireless Communications Systems

This new release from Artech House offers the latest details on the cutting-edge antennas that will be integrated in complex fourth generation wireless communications systems. Written by a panel of leading experts in the field, the book serves as a comprehensive resource, including in-depth coverage of multiband integrated antenna design, simulation, testing and manufacturing. This practical book helps solve integration problems for ever-increasing multiband requirements. Readers will find discussions on important considerations regarding future handset MIMO terminals, such as efficiency and the effect of the user. The book also describes how to avoid tweaking for fractal multiband designs and printed dipole design. Moreover, readers will learn how to identify and choose suitable multiband techniques for a particular MIMO handset. Supported with more than 100 illustrations, this text presents the most recent design developments in the field.

For more information visit www.artechhouse.com

Proximetry to Offer WiMAX in Commercial Aviation Using Pinyon Smart Antennas

Proximetry, Inc., a technology provider of real-time wireless network and performance management solutions, will now offer WiMAX to the commercial aviation industry using smart antennas from Pinyon Technologies. Proximetry’s AirSync intelligent provisioning and management system is being used to control Pinyon’s AirWire advanced smart antennas to enable the electronic delivery of movies and other entertainment to airplanes while on the ground, while also supporting the download of passenger manifests, electronic charts and other vital aircraft specific content. Systems integrator for the project is international electronics and systems group Thales.

Combining Proximetry’s AirSync intelligent provisioning and management software with Pinyon’s next generation AirWire smart antennas makes WiMAX well suited for vertical markets where user types, applications and devices each have specific requirements for operation and need varying degrees of guaranteed quality of service (QoS). AirSync enables the Pinyon AirWire antennas to be managed in real time according to priorities, network policies and the real-time use and behavior of the network. Such real-time beam steering could enable base stations to adapt to environmental conditions, while portable devices can dynamically reorient a handheld device's antenna.

"Pinyon is an innovative producer of simplified smart antennas for WiMAX,” said Tracy Trent, Proximetry’s chief executive officer. “And their unique design means that WiMAX can be optimized to deliver much higher throughput for little additional cost. Combining that with AirSync to manage the antennas and bandwidth allocations means we can support demanding applications such as multigigabytes to numerous aircraft in a limited time window.”

The unique shorted-slot design of the Airwire antenna has enabled gains of up to 13 dBi to be realized extending the range of services and devices while simultaneously increasing throughput. For WiMAX, Pinyon has demonstrated very high bandwidth performance in the difficult operating environment of an airport with point to multipoint service to numerous aircraft simultaneously. And this is all done with low-cost AirWire components - basically just the cost of etching a shorted-slot into the backside of the printed circuit board already designed into a device (plus a few resistors, diodes and capacitors), for a low cost bill-of-materials.

"Pinyon’s current driven shorted slot antenna technology, AirWire, is an unique patented advance over the traditional voltage driven slot antenna that only gets about 60 percent matching efficiency," said Pinyon chief executive officer Debashis Bagchi. "Pinyon has completely changed the way a slot antenna operates. What we do is bring in the RF through a microstrip line - the length of which is a quarter wave - then short the line across the slot, thereby converting the voltage into a current, which give us 90 percent matching efficiency. Our electronically steerable designs enable a microcontroller to dynamically change the directionality of the antenna to maintain the maximum signal in real time without physically moving the antenna. We have been working with Proximetry to bring the AirWire smart antenna technology into this unique WiMAX application," said Bagchi.

In addition to working with Proximetry, Pinyon is working with multiple other original-equipment manufacturers (OEMs), including Siemens, that are using its antenna for Bluetooth, WiFi, WiMAX and Wireless USB devices and soon for both 3G and 4G mobile phones.

For more information visit www.pinyontech.com

Field-Replaceable SMAs Minimize Loss from DC to 26.5 GHz

San-tron, Inc., a manufacturer of RF coaxial connectors and cable assemblies, has introduced a full line of field-replaceable SMAs for applications from DC to 26.5 GHz (and with usable performance to 31 GHz). The connector families include models for mating with 0.012-, 0.015-, 0.018-, and 0.020-in. center pins to accommodate a wide range of RF/microwave circuit dimensions, with the smallest center pins offering the best high-frequency performance.

These rugged 50-ohm field-replaceable SMAs feature passivated 303 stainless-steel bodies with gold-plated center contacts and PTFE insulators for quality voltage-handling capabilities. All models are rated for maximum dielectric withstanding voltage (DWV) of 1000 V RMS at 60 Hz and sea level. The operating voltage-ratings of the connectors are a function of the center-pin dimensions. For example, connectors designed to accept 0.012-in. center pins are rated for operating voltages to 335 V RMS at sea level. Connectors designed to accept 0.020-in. center pins are rated for operating voltages to 500 V RMS at sea level.

San-tron's field-replaceable SMAs are RF tuned to achieve mode-free performance from DC to 26.5 GHz. These connectors feature VSWR of 1.07:1 or better from DC to 11 GHz, 1.25:1 or better through 20 GHz, and 1.38:1 or better through 26.5 GHz. The connectors meet the mechanical interface requirements of MIL-STD-348.
 
San-tron field-replaceable SMAs are available in versions with integral EMI gaskets and for ground-plane mounting (without EMI gaskets). They can be supplied with a wide range of mounting options, including two-hole and four-hole mounting configurations, and are designed for operating temperatures from -65 to 165°C.

The new SMA receptacles are suitable for components and systems requiring broadband frequency coverage in a wide range of commercial and military applications.

For more information visit www.santron.com

September 2008
8-10 - RFID World, Las Vegas, Nevada

10-12 - CTIA Wireless IT, Las Vegas, Nevada

25-26 - 2008 Antenna Systems Conference, Austin, Texas
             Contact Jeremy Martin with questions

30-Oct. 1 - WiMAX Americas, Chicago, Ill.

RFID World September 8-10, 2008 MGM Grand Hotel - Las Vegas, NV RFID World is recognized as the gathering place for builders, buyers and sellers of RFID and Auto-ID technologies.  Come to discover new technologies from around the globe, attend the educational sessions and explore how today’s solutions can help your business thrive. Register today - Click Here! Use Priority Code: ANN01 WiMAX World 2008 September 30 - October 2 Chicago, USA WiMAX World 2008 continues to be the leading WiMAX and mobile broadband conference and exhibition. Since, 2003 WiMAX World 2008 has grown to be the largest, 100% unbiased forum focused on WiMAX and mobile broadband. Developed for the entire WiMAX and mobile broadband eco-system, WiMAX World 2008 features over 200 speakers, best Practice case studies-real WiMAX deployment presentations and over 150 WiMAX and eco-system exhibitors. http://global.wimaxworld.com/ SATCON October 15-16, 2008 New York, NY SATCON – the Satellite and Content Delivery Conference & Expo, October 15-16, 2008, Javits Convention Center, New York, NY At SATCON, develop strategies to manage your communications infrastructure including video, data, voice and Internet using hybrid networks including satellite, fiber, mobile and wireless. SATCON is part of the CCW (Content & Communications World) family of events, which also features the IP Media Conference & Expo and HD World Conference & Exposition.    Visit www.satconexpo.com for more information and to register. Mobile Internet World Conference & Expo October 21-23, 2008 Boston, MA Attend the Mobile Internet World Conference & Expo, October 21-23, 2008, Boston, MA! Join over 175+ industry executives from the entire mobile Internet ecosystem including Google, Intel, Access, Ericsson, Qualcomm, Hearst Publications, Yankee Group, Texas Instruments and many others. Mobile Internet services are an untapped $66 billion global market according to Yankee Group.  Learn how to harness your share of this immense opportunity, and how major players including operators, service providers, software and search firms, content and media firms are collaborating and shaping this market. http://www.mobilenetx.com/2008/boston/ ITC 2008 October 27-30 San Diego, CA The Home of telemetry...... The ITC is dedicated to the promotion and stimulation of technical growth in telemetering and its allied arts and sciences. Learn about and contribute to telemetry advancement by attending and participating in ITC 2008! To learn more and to register visit: http://www.telemetry.org/. Contact- E-Mail: information@telemetry.org IMAPS 2008 41st International Symposium on Microelectronics Bringing Together The Entire Microelectronics Supply Chain! November 2-6, 2008 Rhode Island Convention Center - Providence, Rhode Island, USA The 41st International Symposium on Microelectronics will be held at the Rhode Island Convention Center, Providence, Rhode Island – USA and is being sponsored by the International Microelectronics And Packaging Society (IMAPS). The 41st Symposium on Microelectronics will focus in the areas of Industry, Systems & Applications, Design and Materials & Process. Sessions are tentatively planned to highlight the major contributions of the work in each these four areas of concentration. http://www.imaps.org/imaps2008/index.htm AMTA 2008 November 16-21 2008 Boston, MA AMTA 2008 is coming to Boston, Massachusetts on November 16-21 2008 to celebrate the 30th Annual Antenna Measurement Techniques Association Symposium. AMTA 2008 offers a strong technical program as well as a rich historical and cultural experience and many professional networking opportunities. Highlights of AMTA 2008 will be: Sunday Short Course presented by Professor Rahmat-Samii of UCLA Technical sessions with excellent abstracts Monday’s exhibitor's lunch Monday night dinner cruise on the Odyssey in the scenic Boston Harbor Tuesday “Student Day” Wednesday evening annual awards banquet Thursday evening Blue Man Group performing at the Charles Playhouse. Friday visit the Boston Museum of Science for a unique technical tour. Visit www.amta2008.org for online registration.

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