Cedar Park, Texas, July 30, 2007 – ETS-Lindgren engineers dazzled the audience in sunny Hawaii – location of the recent 2007 IEEE International Symposium on EMC – with presentations on the latest test and measurement equipment for wireless, automotive, microwave and general EMC testing of military and commercial products.
Dr. Michael Foegelle, ETS-Lindgren's Director of Technology Development, spoke about the challenges of coexisting wireless technologies in converged devices during the EMC and Wireless Devices workshop. He noted, "Many wireless devices today have multiple radios in a single product, such as cell phones with Bluetooth, and converged devices with even more radios (cellular, Wi-Fi, WiMAX, Bluetooth, GPS, DVB-H, MediaFLO, etc.) are on the way. Today's RF and EMC engineers not only have to worry about how interference from the platform (CPU, display, etc.) affect the radio, but also how these radios interact with each other when more than one radio is in operation. Current EMC test standards are not designed to evaluate these issues." Fortunately, as a key contributor to the certification programs of the CTIA, Wi-Fi Alliance, and WiMAX Forum, Dr. Foegelle thoroughly understands these challenges and anticipates future industry needs for wireless testing. Many of the new ETS-Lindgren wireless test products, including the world's first CTIA authorized test lab (CATL) for Over The Air Performance testing, were spearheaded by Dr. Foegelle.
Since antennas and probes are an important part of EMC testing, ETS-Lindgren engineers Zhong Chen and Dr. Vince Rodriguez also educated engineers at EMC 2007 with two popular tutorials. The Fundamentals of Antennas and Probes tutorial provided an introduction to antenna and probe theory while addressing applications relevant to EMC. Calibration was also addressed to ensure these products continue to work properly. According to Mr. Chen, Senior Principal Design Engineer, "The quality of the calibration and proper applications of the calibration factors directly impact the radiated measurement uncertainties – an important consideration for the validity of any test." Mr. Chen also presented the paper A Critique on the Traceability in Site Validation Measurements to provide further technical information on his research performed at ETS-Lindgren's large ISO 17205 certified open area test site, the industry's first A2LA-accredited calibration site.
Dr. Rodriguez, Senior Principal Antenna Design Engineer, chaired the tutorial Advances in Site Validation Techniques and Activity Above 1 GHz to educate engineers on the developing IEC/CISPR and ANSI standards in this area. His presentation specifically covered antennas. "Every speaker in the tutorial, including active CISPR Subcommittee A and ANSI ASC C63? members Werner Schaefer and Don Heirman, agreed on the importance of having knowledge of the radiation pattern characteristics of the antenna used during a test." Dr. Rodriguez continued, "As far as I know, ETS-Lindgren is the only EMC antenna manufacturer with facilities to perform antenna pattern measurement from 400MHz to 18GHz. The patterns for most of our antennas, as well as the free software to visualize them, may be found at our website www.ets-lindgren.com/3Dpatterns." Judging by the looks of the engineers present during his presentation, the vivid pattern measurements shown were indeed impressive.
For a copy of the educational presentations noted above, please contact Janet O'Neil at firstname.lastname@example.org.
ETS-Lindgren is an international manufacturer of components and systems that measure, shield, and control electromagnetic and acoustic energy. The company’s products are used for electromagnetic compatibility (EMC), microwave, wireless and Magnetic Resonance Imaging (MRI) testing, electromagnetic field (EMF) measurement, radio frequency (RF) personal safety monitoring, and control of acoustic environments.
Headquartered in Cedar Park, Texas, ETS-Lindgren has manufacturing facilities in North America, Europe and Asia. The company is a wholly owned subsidiary of ESCO Technologies, a leading supplier of engineered products for growing industrial and commercial markets. ESCO is a New York Stock Exchange listed company (symbol ESE) with headquarters in St. Louis, Missouri. Additional information about ETS-Lindgren is available at www.ets-lindgren.com. Additional information about ESCO and its subsidiaries is available at www.escotechnologies.com.
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