AMTA Webinar

AMTA Webinar Series


Title: A Novel Complex Image Expansion for Antenna Measurements Above a Lossy Half Space
Speaker: Dr. David Tonn, Naval Underwater Warfare Center (NUWC) Newport, USA

Webinar Date: September 7, 2022 11:00 AM-12:00 noon Eastern Time 

Watch the Recording

Requires membership Login to View



Expansion of functions in terms of exponential sums is a technique that has been used in the past for applications in applied mathematics such as number theory. However, the technique also has interesting applications in the field of engineering. In this presentation, we shall discuss a novel approach to deriving an expansion of a particular function as an exponential sum and show how this expansion can be applied to the Sommerfeld Integral to give a novel Discrete Complex Image representation of the problem.

Speaker Bio:


Dr. David Tonn

Dr. David Tonn is a Senior Engineer with the Submarine Electromagnetic Systems Department at NUWC Newport. He received his Ph.D. degree in Electrical Engineering with an area of concentration in Electromagnetics and Physical Electronics from the University of Connecticut. His dissertation was in application of metamaterials for maritime antennas. Dr. Tonn’s research interests include low frequency, buoyant cable, and microstrip antennas, application of advanced materials to antenna design, low frequency radio wave propagation, optimization methods in electromagnetics, and antenna measurement methods. His work has been recognized with the 2013 IEEE Harry Diamond Memorial Award and several other notable awards. Dr. Tonn is also an adjunct lecturer in Electrical Engineering at the University of Connecticut and has taught classes ranging from undergraduate courses in circuit analysis to graduate level ones in advanced electromagnetics and antenna theory. His teaching efforts have been recognized with two teaching awards, including the University of Connecticut Outstanding Adjunct Teaching Award for the 2020-21 academic year. Dr. Tonn is a Senior Member of the Antenna Measurement Techniques Association (AMTA) and also holds nearly 30 United States patents for antennas and related inventions. He is also a technical reviewer for several peer-reviewed journals.



About AMTA Webinar Series:

AMTA webinar series is introduced to highlight latest antenna measurement technologies to the AMTA community. Speakers are selected from the best papers presented at the AMTA conferences.

You can watch the recording of the previous webinar at:

Drone-Based Outdoor Far-Field Antenna Measurements (members only)

  • Member News

    Meet your AMTA 2023 Board of Directors

    We're please to announce the AMTA 2022 Best Paper Winners

    We are sad to share the news of the passing of Dr. Jesper Hansen. Please click here for his remembrance.

    If you don't recall your login credentials or AMTA number - PLEASE DO NOT CREATE A NEW PROFILE AS THIS CAUSES SEVERAL ISSUES. 

    • Forgot your password: Click the Reset Password link and a reset link will be sent to your email. For security purposes, AMTA staff cannot view passwords.
    • Don't remember your username? Please email and provide your name and contact information. We'll respond with your username within one business day. For most, your email will be your user ID.
    • Has your email changed? Please email with your name and new email. We'll update your existing record and respond within one business day.

    If your membership has lapsed, you may renew your membership here.

    ! Have you opted into the AMTA listserv? GDPR and CASL anti-spam legislation requires that an individual opt into marketing messages. To make sure you're included on all AMTA communications, log in and go to Profile < Settings < Email Settings < Confirm the setting is set to Yes.

  • AMTA News

    The AMTA Board of Directors would like to welcome the newest AMTA Node - the Australian Node!

  • Event News

    Announcing Fourth AMTA Webinar: Single-Cut Phaseless Near-Field Measurements (May 25, 2023 | 11:00 AM- Noon Eastern Time)

    Thank You to All Who Contributed to the Success of the AMTA 2023 Regional Event! [Read the wrap-up email]

    The AMTA 2023 Website is now LIVE! Click HERE to watch the promotional video and learn about next year exciting Symposium in Seattle.

    Beware Event & Hotel Phishing Schemes - CLICK HERE