IMPI offers several opportunities for our members and the microwave community at large to gather and share information throughout the year. These opportunities include an annual Symposium, Short Courses and Webinars.


2-Part Spring 2018 Webinar Series: A Tutorial on High Power Microwave Equipment, Processes, and Applications
John Mastela; Global Director Industrial Microwave Business Unit.  Richardson Electronics
Jerry Wessel; Sr. Application Engineer Industrial Microwave.  Richardson Electronics
Dr. Ken Kaplan; President. Cellencor

How to Choose Optimal Building Blocks for a Microwave Energy Application. (Part 1 Tuesday - May 1st from 11am-12pm EDST)
There are many choices that must be made when engineering or designing a microwave system for industrial or scientific applications.  This Webinar will provide an overview of the key components such as applicators, power sources, transmission lines, sensors and controls. Also covered will be the factors that need consideration in choosing the appropriate microwave frequency.

Microwave Applications: From Traditional Processes to Emerging Technologies. (Part 2 Thursday - May 24th from 11am-12pm EDST)
An overview of the wide variety of microwave processes currently used in industry and science.  A look at some of the exciting and emerging new applications that are being enabled by the latest advancements in microwave technology such as solid state power sources and high performance process sensing.  How advanced design, modeling, and simulation software tools are being used to make microwave application engineering more efficient and accurate while saving time and reducing costs.

Webinars are FREE for IMPI Members; the 2-part Webinar series is $179 for non-members. Register above in ONLINE STORE!! 

The 52nd Annual Microwave Power Symposium (IMPI 52)
The Hilton Hotel, Long Beach, California, USA
June 26-28, 2018
See the Symposium and Short Course tab for more details.

IMPI's 2018 Fall Short Course
October 24-26, 2018
Campbell's World Headquarters, Camden, NJ, USA
More details soon.....



IMPI Fall Webinar Series: Industrial Mw & RF Processing
November 9th and December 14th from 11am-12pm EST; Instructed by Bob Schiffmann
These two webinars will introduce the application of microwave and RF systems for the industrial processing of materials. Part 1 will describe the equipment utilized by both of these heating modalities, and the uniqueness of each. Part 2 will focus upon how these heating systems are applied in industry, their unusual heating properties and how these are best applied.

FREE for Members! $99 for one webinar; $159 for both webinars for both. Register here.


IMPI's Fall Short Course "The Changing Landscape of the Microwavable Food Market"
October 24-26, 2017 on Conagra's Campus, Omaha, Nebraska, USA

3-Part 2017 Spring Webinar Series (March, April, June 2017)
*Free for IMPI Members; $249 for non-members for all three Spring Webinars or $99 for one for webinar

Part III: Dielectric Properties of Foods and Bioproducts

Thursday, June 1st from 11am-12pm
Presenters: Pranjali Muley and Candice Ellison, Louisiana State University

Knowledge of dielectric properties of materials plays a major role in microwave design for any particular process. Dielectric properties provide information about how the material will interact in the presence of electromagnetic energy during microwave heating. As the application of microwave and RF heating in food industry is gaining momentum, significant work has been performed on measuring the dielectric properties of various foods and bioproducts. This webinar will focus on understanding the dielectric properties of different foods and bioproducts and their relationship with other material properties (temperature, density, moisture content, etc). This presentation will also give a brief overview of dielectric properties and measurement techniques. Application of dielectric properties in system design and numerical modeling will also be discussed.

Part II: Material Characterization from DC to mm-wave and THz

Thursday, April 27th from 11am-1pm EDST
Presenter: Say Phommakesone, Keysight

From stealth materials to dielectric substrates, microwave food products to biofuels, accurate characterization of their electromagnetic properties from DC to THz frequencies provide engineers with critical information needed for material and circuit design, modeling, new material research, health and safety, manufacturing, quality control, and more. Many measurement methods exist, but which to choose is often a mystery. My intent with this seminar is to clear the air by providing an overview of measurement methods, with strengths, limitations and applications of each.

Part 1: Introduction to Dielectric Properties for Microwave Processing of Materials
Thursday, March 30th from 11am-12pm EDST
Presenter: Shawn M. Allan, Allan Materials

Abstract: Microwave and RF heating offer significant opportunities for cost savings in manufacturing, from food products to ceramics. The ability to generate heat within the product saves both time and energy. The manner in which products respond to microwaves can vary greatly from heating vigorously or barely at all, and from uniformity to localized hot spots. These variations are due in large part to the materials' dielectric properties. Dielectric properties determine the degree to which microwave power is transmitted, absorbed, and reflected by materials, and therefore also the degree and uniformity of heating.

Knowing the dielectric properties and how they change with frequency and temperature, allows process developers to create better microwave heating profiles. Property data is essential to enabling accurate microwave modeling efforts. This webinar will cover basics of dielectric properties and their relationship to physical material parameters and response. A few examples of measurement options will be shared. Case studies will be provided of the use of dielectric properties in understanding microwave processing results and development of heating strategies.

Bio: Shawn Allan is a materials engineer (B.S. Alfred University, M.S. Georgia Tech) and Vice President of Lithoz America LLC, a New York based subsidiary of Lithoz GmbH, which specializes in additive manufacturing of ceramics. Shawn's past roles include President of Allan Materials Inc., and Senior Program Manager at Ceralink Inc, where he acquired 11 years of experience in microwave and RF processing of materials ranging from drying, hydrothermal processing, polymer melting, binder removal, high temperature calcination reactions, and sintering of ceramics and metals. The use of dielectric property data figured prominently in that work, with several examples published related to process development and modeling.

Join us for an introduction to what dielectric properties are, why they are important to a researcher or developer and what you can learn from them.



2-Part Fall 2016 Webinar Series

Industrial Microwave Heating

October 6th at 11am
Most industrial food processing system using microwave energy combines that with other heat transfer means. These include hot air, steam, frying and more. A number of commercial systems will be described and analyzed. This one hour webinar is presented by Bob Schiffmann of R.F. Schiffmann Associates Inc.

Solid-State Generation of RF and Microwave Energy and its Applications
November 29th at 11am

This one hour webinar will be presented by Dr. Klaus Werner of the R.F. Energy Alliance

Webinars are free of charge to all IMPI Members. $99 for one webinar or $179 for both Fall Webinars. Registration is now open.


"A Roadmap to Microwavable Food Success" Fall 2016 Short Course
October 25-27, 2016
The Penn's View Hotel, Downtown Philadelphia, PA, USA
Hosted by IMPI and Sponsored by the Campbell Soup Company
More details at


The 51st Annual Microwave Power Symposium (IMPI 51)
June 20-22, 2017
The Sonesta Hotel Coconut Grove, Miami, FL, USA

The Call for Papers will be released on September 16, 2016. Submission deadline is January 2017. The Technical Program Chairmen for IMPI 51 are Dr. Graham Brodie of the University of Melbourne and Dr. Ric Gonzalez of ConAgra Foods. Bob Schiffmann will Chair the Food Science & Technology Program Committee.

Contact if you are interested in sponsoring or exhibiting at IMPI 51 or have any questions.

Details will be added as they become available here:




The 50th Annual Microwave Power Symposium
June 21-23, 2016 in Orlando, FL, USA
Click here for more details. 


3-Part Spring 2016 Webinar Series on Food Safety (IMPI_Webinars_Spring_2016 Updated Flyer)

Part 1: Food Safety: A Regulatory Perspective, Dr. William K. Shaw, USDA FSIS, February 24, 11am-12pm EST

Part 2: Food Safety: A Microbiological Perspective, *Note Speaker Change:  Developing & Validating Cooking Instructions, Lea Ann Dea, RD, Senior Culinary Product Specialist, ConAgra Foods and Food Safety Considerations for Heating of Foods In Microwaves by Consumers, Stephanie Nguyen, MS, Senior Microbiologist, ConAgra Foods, March 23, 2016

Part 3: Validation Techniques to Ensure Food Safety, Ms. Judy Lindsey, Product Dynamics, April 20, 2016

All Webinars take place from 11am-12pm EST.

Registration is FREE for IMPI Members; $99 per webinar or $249 for all three webinars for Non-Members. REGISTER HERE!

Fall 2015 Webinars

Magnetrons for Microwave Power Applications

November 17, 2015 from 11am-12pm EST.
Instructor: John M. Osepchuk, Full Spectrum Consulting

Magnetrons are the accepted norm for microwave power applications (e.g. heating):; the microwave oven, domestic and commercial: also for industrial applications at 915 MHz as well as industrial and specialized commercial applications at 2.45 GHz at power levels exceeding 2 kW. This webinar presents an overall review of these tubes, their history and their future. We will concentrate on the cooker magnetron at 2.45 GHz that is used in microwave ovens, but there will be brief reviews of the magnetrons at `915 MHz and 5800 MHz.

Course content will be of interest to product developers & engineers whose work relates to domestic and commercial microwave ovens, as well as process developers, systems engineers interested in industrial heating systems.

Topics include:

  • History of magnetron development in USA, Far East & Russia.
  • Overall view of key magnetron components: anode, cathode, pole pieces, etc.
  • Theory and experiment about normal magnetron operation.
  • A brief review of the theories related to abnormal phenomena i.e. damage to anodes triggering possible serious RFI problems near end of life.

Microwave Component Configurations for Industrial Heating Systems
September 29, 2015 from 11am-12pm EST.
Instructor: John F. Gerling, Gerling Applied Engineering

This webinar covers the basic configurations of microwave generators and waveguide components commonly used in industrial processing systems. The course content is primarily for process developers, system engineers and designers, maintenance technicians and plant managers who wish to gain more insight into the various microwave components and the purpose and importance of each for stable process performance and reliable system operation. Topics covered include:

  • Microwave generators (magnetron vs. solid state, switch mode vs. linear vs. doubler)
  • Applicators and cavities (multimode, single mode, batch, continuous)
  • Waveguide components (isolators, tuners, power measurement)
  • Impedance matching (stub/slug tuners, irises, manual vs. automatic)
  • Power delivery configurations (cost vs. performance)

Webinars are FREE for all IMPI Members. The cost for non-members is $99 for one or $179 for the two webinars.


Fall 2015 Short Course
October 27-29, 2015
The Doubletree Hotel Downtown, Pittsburgh, PA
Sponsored by the Kraft Heinz Company
Click here for more details:


IMPI 49 Symposium: Was held June 16-18, 2015 at the beautiful Kona Kai Resort in San Diego, California, USA.

3-Part Spring 2015 Webinar Series (click for details):

Part 1: Microwave Oven Design (Feb 17)
Part 2: Microwave Safety (Mar 17)
Part 3: Validation Using the IEC Method (Apr 21)

Registation is FREE for IMPI Members; $99 per webinar or $249 for all three webinars for Non-Members. REGISTER HERE.

Webinar: Virtual Microwave Test Kitchen for Food Design (click for details)
Held Tuesday, September 16, 2014.

Fall Short Course:  Was held October 21-23, 2014 at the Hyatt Regency Cleveland at the Arcade, in downtown Cleveland, Ohio, USA. Sponsored by Nestle.
Schedule of Events, Registration Details

IMPI 48 Symposium
IMPI 48 was held June 18-20, 2014 at the Doubletree Hotel in New Orleans, LA, USA.

IMPI Webinar Series 2014
Webinars were offered free of charge to our IMPI members, and open to the public for $99 for one webinar; $159 for both webinars.

Basics of Microwave Heating Webinars was held in May 2014.

Fall 2013 Short Course on Microwave Trends
October 2013
ConAgra Campus, Omaha, Nebraska, USA

47th Annual Microwave Power Symposium (IMPI 47)
June 25-27, 2013
The Biltmore Hotel
Providence, Rhode Island, USA

Fall 2012 IMPI Short Course
Minneapolis, MN

46th Annual Microwave Power Symposium (IMPI 46)
June 20-22, 2012
Bally's Las Vegas
Las Vegas, Nevada, USA

Spring 2012 Short Course: Microwaves 101
Four Points Sheraton BWI
Baltimore, MD, USA

Fall 2011 IMPI Short Course
State of the Union: Microwaves & Food Safety
October 2011
Chicago, IL, USA

IMPI's 45th Annual Symposium
(focusing on food, agricultural and biological processes)
June 8-10, 2011
The Doubletree Hotel - New Orleans
New Orleans, Louisiana, USA

Fall 2010 IMPI Short Course
State of the Union: Microwaves & Food Safety
November 2010
Dallas, Texas, USA


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