CEDAR PARK, Texas, October 4, 2022 – ETS-Lindgren announced its technical contributions to AMTA 2022, the annual Symposium of the Antenna Measurement Techniques Association (AMTA). The Symposium will be held in person from October 9 to 14 at the Westin Westminster in Westminster, Colorado, ideally situated between Boulder and Denver. The contributions include research papers on varied topics documenting ETS-Lindgren's expertise in wireless Over-the-Air (OTA), EMC, and RF/Microwave Test and Measurement System Solutions. The research papers contributed by ETS-Lindgren will be presented in several sessions, including:

Monday, October 10, Session 1: 5G and Wireless Design and Applications from 9:00 am to 9:54 am, Michael Foegelle, Director of Technology Development, will present the paper "Tunable Cellular Desensitization Using SD Card Data Transfer." In this paper, Dr. Foegelle demonstrates a method for producing repeatable and tunable desensitizing interference in various cell phones using data transfer from an SD memory card. The resulting device can be used as a test artifact for evaluating the ability of different over-the-air test methods (e.g. free-space vs. reverberation chamber) to detect the same level of desensitization.

Wednesday, October 12, Session 10: Antenna Measurements II, from 10:00 am to 11:48 am, Zhong Chen, Director of RF Engineering, will present the paper "Additional Insights into Chamber Effects in the Gain Extrapolation Data Using Empirical Mode Decomposition." Co-authored with Yibo Wang, RF Engineer with ETS-Lindgren, this paper describes a novel method to analyze antenna extrapolation calibration data using Empirical Mode Decomposition (EMD) and Hilbert-Huang Transform (HHT). The method provides additional insights into the reflection sources, such as how the spectral contents of the reflections vary as the antenna travels along the track. As a result of the EMD process, "clean" data with minimal chamber influence is obtained, which can be used to compute the far-field gain. The technique provides yet another powerful post-processing algorithm to reduce chamber effects in the gain extrapolation method.

Thursday, October 13, Session 15: Imaging, Algorithms, and Processing Techniques, from 1:30 pm to 3:00 pm, Yibo Wang will present the paper "A Technique of Holographic Projection from Far-Field Pattern to an Unconstrained Planar Surface." Co-authored with Zhong Chen, this paper proposes a robust back-projection method. The far-field data can be projected to an arbitrary surface while maintaining a high-resolution hologram. It is especially applicable for cases when the Antenna Under Test (AUT) has an arbitrary orientation with an offset from the origin, or for cases where projections are needed onto several surfaces of a multifaceted AUT.

As Vice President of the AMTA Board of Directors, Mr. Chen also acted as a reviewer for the AMTA Symposium papers in addition to lending his expertise as Chair of Session 4: Chamber Design, Measurement, and Instrumentation scheduled for Monday, October 10, from 3:10 pm to 4:58 pm.

Please visit ETS-Lindgren in Booth #209 during the AMTA Exhibition held on October 10 to 12 to discuss these papers with our experts as well as see a demonstration of a new Planar Near-Field Scanner System. ETS-Lindgren has developed a small form factor planar scanner for testing high frequency antenna arrays. The unit on display at AMTA is the smallest size and can increase in scale for scanning larger antennas. Capable of generating high accuracy near-field measurement data from 26.5 GHz to 40 GHz, the system includes an absorber-lined shielded enclosure. The scanner may also be used without a shielded enclosure if the test environment is interference and reflection free at the test frequency. As configured, the planar scanner is ideal for 5G FR2 antenna systems and can increase in frequency scale to support 6G antenna development.

Visitors to ETS-Lindgren's Booth #209 can also learn about our latest products and services. In addition to displaying our industry-leading Extra-High Performance Microwave Absorber, our popular Model 3164-08, Open-Boundary Quad-Ridged Horn Antenna, and Model 3126C-3500, Precision Reference Sleeve Dipole, new products on display include an example of ETS-Lindgren's Power Line Filter Series for protection against Electromagnetic Pulse (EMP), High Altitude Electromagnetic Pulse (HEMP), and Intentional Electromagnetic Interference (IEMI). These filters are available in a wide range of ampere ratings for commercial as well as government applications. Manufactured at ETS-Lindgren's headquarters facility in Cedar Park, Texas, the performance of the EMP/HEMP/IEMI Power Line Filter Series has been independently tested and certified by Little Mountain Test Facility at Hill Air Force Base in Ogden, Utah, the premier survivability and reliability HEMP testing center owned by the U.S. government and managed by Boeing. ETS-Lindgren's EMP/HEMP Power Line Filters offer excellent multi-stage over-voltage and EMI/RFI protection while the Pulse Protected Power Line Filters with Red Edge™ Technology protect against damage to electronic equipment and loss of data caused by a sudden and intense EMP and IEMI.

The AMTA Exhibition will be open from 10:00 am to 5:00 pm on October 10; from 9:00 am to 11:30 am and 1:30 pm to 5:00 pm on October 11; and from 9:00 am to 5:00 pm on October 12.

Did you know ETS-Lindgren is the leading manufacturer of RF and Microwave turnkey systems for Government/Aerospace, Automotive, and Wireless applications? Our diverse absorber product line is well known for its durability, high performance, non-hygroscopic design, and high-power handling capabilities. The educational brochure "Top 10 Anechoic Absorber Considerations for RF and Microwave Applications" provides helpful information on how to select the right absorber for the application.

For longer than 75 years, ETS-Lindgren has been manufacturing a wide range of products renowned for setting the research, development, production, and service standards of the Wireless, EMC, and RF/Microwave Test and Measurement Industry. Having the proven technical depth expected of an industry leader, with more than 50,000 RF Shielded installations worldwide, ETS-Lindgren can guide our customers to an optimal test and measurement solution for their specific product application. Rest assured that we will provide continued support through our six manufacturing factories and team of more than 750 employees worldwide.