ETS-Lindgren Announces Technical Contributions to AMTA 2021 – Industry’s Leading Symposium on Antenna Measurement Techniques

CEDAR PARK, Texas, October 14, 2021 – ETS-Lindgren announced its technical contributions to AMTA 2021, the annual Symposium of the Antenna Measurement Techniques Association (AMTA).  The Symposium will be held virtually and in-person from October 24 - 29 at the Hilton Daytona Beach Oceanfront Resort in Daytona Beach, Florida.  The contributions include several 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 scheduled for Thursday, October 28, including:


·       In Session 12: Chamber Design, Measurement, and Instrumentation, from 8:00 to 9:30 am, Zhong Chen, Director of RF Engineering, will present the paper Intercomparisons of Site VSWR Measurement Methods using Mode Filtering, Time Domain and Spatial Sampling Techniques.”  Co-authored with Stuart Gregson of Next Phase Measurements, this paper describes a comprehensive study conducted to validate the mode-filtering technique proposed for EMC chamber quiet-zone evaluation above 1 GHz.  The novel approach presented overcomes the difficulties with under-sampling encountered in the traditional spatial sampling method adopted by CISPR.  It also has the distinct advantage over the time domain method adopted by ANSI C63.25.1, in that broadband and low ring-down antennas

are not required.


·       In Session 13: Phased Array and Reconfigurable Antennas, from 10:00 am to 12:00 pm, Michael Foegelle, Director of Technology Development, will present the paper Simultaneous Measurement of Analog Phased Array Elements Using Orthogonal Coding.”  In this paper, Dr. Foegelle shows how orthogonal coding can be applied to each element of a phased array through the onboard gain/phase control circuitry, allowing extraction of the average performance of each element from the measured total result.  “Iteratively calibrating individual elements of a phased array is time consuming, and the behavior of each element often changes based on the state of the neighboring elements,” advised Dr. Foegelle.  “Ideally, we’d extract individual element performance from the combined pattern of the array with all elements active.” 


·       In Session 15: Antenna Design and Analysis, from 3:30 to 5:30 pm, Anoop Adhyapak, Senior RF Engineer, will present the paper Analysis of Far-Field Condition of Broadband Quad Ridge Horn Antennas.”  Mr. Adhyapak notes that, conventionally, the antenna’s aperture dimension is considered for computation of the far-field distance.  Although it may hold true for narrow-band antennas, the accuracy of the far-field distance is questionable for broadband antennas throughout the frequency range.  In this paper, Mr. Adhyapak analyzes the electrical dimension of the broadband antennas over frequency range and the corresponding far-field distance, per the criteria stated in the IEEE 149 draft standard. 


Please visit ETS-Lindgren during the AMTA Exhibition held on October 25 - 27 to discuss these papers with our experts as well as learn about our latest products and services.  In addition to displaying our industry-leading Extra High Performance Microwave Absorber, and our popular Model 3164-08, Open Boundary Quad-Ridged Horn Antenna, new products on display will include Model 3126C-3500, representing our new series of Precision Reference Sleeve Dipoles.  Truly omnidirectional antennas, they provide an electric dipole pattern approaching that of a half-wave resonant dipole.  Typical gains are between 1.5 and 2.0 dB.  With a frequency bandwidth of 1 GHz, the 3126C Series replaces multiple narrowband dipoles, thus enabling the usage of fewer dipoles to calibrate a chamber.  The AMTA Exhibition will be open from 10:00 am to 4:00 pm on October 25; from 9:00 am to 5:00 pm on October 26; and from 9:00 am to 4:00 pm on October 27.


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 “Top10 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 700 employees worldwide.  Let us assist you with your test system requirements by calling +1 (512) 531-6400, sending an email to, or visiting our booth at the AMTA 2021 Symposium. 


For more information on the AMTA 2021 Symposium, click here.  For more information on the AMTA organization, click here.


About ETS-Lindgren


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  Follow ETS-Lindgren on Facebook, LinkedIn, Twitter, and YouTubeAdditional information about ESCO and its subsidiaries is available at




Janet O'Neil
Marketing Communications

Office:  +1 (512) 531-2676
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