(Re)Discovering the Lost Science of Near‑Field Measurements
(Re)Discovering the Lost Science of Near‑Field Measurements
Ever Thought Possible
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A Preview of the Symposium taking place in Grand Rapids, Michigan
According to a Report and Order, the new rules will allow the deployment of unlicensed field disturbance sensors (a kind of radar device) to operate in the 60 GHz band. Field disturbance sensors are increasingly being used in a variety of important applications, including sensors that alert users to children that have been left in dangerously hot motor vehicles…
The PPE Regulation, which took effect in April 2018, replaced the EU’s original PPE Directive (89/686/EEC). The Regulation is aligned with the EU’s new Legislative Framework policy and includes slight modifications to the scope and risk categorization of products…
s an EMC consultant, assessing the EMC performance of large systems and machines is a common task. Over the years, I have encountered a wide range of equipment, including high-power variable-speed drives (VSDs) in factories, specialized equipment installed on ships, food processing equipment, and many others. With technological advancements, there are now even more large systems that require in-situ EMC assessment, such as quantum computers, additive manufacturing machines, waste recycling equipment, renewable energy power generators, high-power electric vehicle chargers, and more.
While testing equipment in an accredited EMC chamber is ideal, it may not be a realistic option for large machines for several reasons. First, a large chamber is required to accommodate these machines. Second, while the chamber is being charged for use, it can take days or even weeks to install the machine in a chamber and then disassemble it after the testing is complete. Finally, logistics and lead time for using the chamber can also add to the overall cost and time required for EMC testing of large machines.
Equipment That Works The Way You
Tel: 702-534-6564 • Fax: 702-441-7016 • Email: sales@exoduscomm.com • www.exoduscomm.com
Despite the COVID-19 pandemic, progress continued in developing and refining C63 Standards. Subcommittees of the Main Committee (all eight of them) were encouraged to meet on a quarterly basis using teleconferencing techniques for most of 2020, 2021, and 2022. Working groups were encouraged to meet as often as necessary to expedite the development of their respective standards (each C63 standard under development or refinement has a Working Group assigned to do the work under the surveillance of the appropriate Subcommittee).
- EMC Test Chambers
- Shielded Doors
- RF Shielded Rooms
- EMC Antennas
- EMC Accessories
Background1
The first article in this series (see In Compliance Magazine, May 2023) described in detail the use of radios that used unshielded connections (termed antenna lead-ins) between the radio and the external antenna.2 The antenna lead-in was a single wire above ground, using aircraft structure for a return path, that was connected to high impedances at both ends. That is, the radio input was the grid of a vacuum tube, so basically a small capacitance, and the external antenna was an electrically short wire over most of the 0.15 – 20 MHz (200 –15 meters) frequency (wavelength) range of the radio.
his article presents the derivation of the far-field criterion for two fundamental wire-type antennas: electric (or Hertzian) dipole and magnetic dipole.
0 = I0, positioned symmetrically at the origin of the coordinate system and oriented along the z-axis.
The complete fields of the Hertzian dipole, at a distance r from the origin, can be obtained from the vector magnetic potential A shown in Figure 1, (see [1] for the derivations), and can be expressed as, [2],
ANSI Z535.1 – Safety Colors in Focus
n our “On Your Mark” columns, we often discuss the importance of American National Standards Institute (ANSI) Z535. This family of standards is critical for manufacturers and workplaces across the U.S. in their focus on accident prevention and risk reduction. That’s because they form a guide for the design, application, and use of signs, colors, and symbols intended to identify and warn against hazards and for other accident prevention purposes. This month’s column explores one of these standards in depth: ANSI Z535.1 – Safety Colors.
One car manufacturer found that the craze for CB radio caused more than a jamming of the airwaves. They found that if a CB was operated in close proximity to their car, the central locking engaged, locking the passengers within the vehicle! On a slightly more serious note, another prestige car manufacturer found that whenever the vehicle passed by an operating ambulance or fire station, the air bags activated…
Mobile phone makers and car manufacturers are investigating claims that handsets can cause car safety airbags to inflate and interfere with automatic braking systems. Tests carried out by Volvo in Sweden found that phones operating independently of car electrics can trigger airbags and interfere momentarily with control systems…
- A semi-submersible oil exploration platform moving off-station when its global positioning by satellite system was disrupted by the signal from a portable radio. This was due to poor shielding on an interconnection cable.
- Police cars’ central locking systems operating during use of their mobile radios.
- Vehicle anti-lock braking devices operating when a radio transmitter beaming across a highway five miles away, was used…
According to a study carried out by the Cleveland Clinic and published in Eurospace by the European Society of Cardiology®, a standard electrical discharge from a TASER®…
EMC+SIPI Symposium offers a comprehensive selection of electromagnetic compatibility, signal and power integrity, standards testing and compliance, and education programs – from engineering to consultative business management and everything in between. Engineers will learn to increase efficiencies and productivity, enhance performance, and gain insight needed to solve daily and future strategic challenges.
In addition to the robust technical program, there are a variety of networking events to choose from as well as a quality exhibit hall featuring industry providers showcasing current and innovative products and services.
Visit our booth and see our new 250S6G18, a fully solid state, air-cooled, RF Power Amplifier delivering 250 Watts from 6 to 18 GHz. This is your TWT replacement for testing from 6 to 18 GHz for field levels of 200 V/m and higher.
While you’re in the booth, ask to see demonstrations of our newest release of emcware, 7. Fully included in the purchased product, emcware 7 gives you the capability to perform NSA and sVSWR testing on your OATS or semi-anechoic chamber for site validation for radiated emissions testing.
We will be showcasing our wide selection of RF power amplifiers, Conducted Immunity Systems, emcware, field probes, and accessories from 10 kHz to over 40 GHz.
SunAR RF Motion will also highlight products such as their EMI test antennas and antenna positioning equipment.
Our capabilities in the RF Power space have been well known for over 50 years, and we aren’t stopping or resting, as we continue to push past the boundaries of power limits and frequency limits.
Also, don’t forget to stop by the booth and enter to win our yearly prize giveaway!
Stop by IEEE EMC+SIPI Booth #301 to speak with one of our test and measurement experts, see our variety of product solutions, or experience on of our in-person demos. With decades of experience in compliance testing and measurement, ETS-Lindgren is Committed to a Smarter, More Connected Future.
Not attending the show? Contact your local ETS-Lindgren representative or visit https://www.ets-lindgren.com.
- IMU3000 – Multi-function generator for Surge, EFT, Power Fail, Ringwave and more.
- MIL3000 – Flexible solution for MIL-STD-461 CS06, CS106, CS115 & CS116 transients. The most advanced military conducted susceptibility test generator available.
- ESD3000 – Handheld, AA rechargeable battery operated Electrostatic Discharge simulator. Precise, reliable waveforms.
- Pulse Measurement – Free space D-dot electric field measurement chain.
- EMC Positioners – Ultra accurate and reliable boresight antenna mast, field probe positioner and compact turntable.
- MT400 – 400W Class A solid state power amplifier.
- EMI Hardened Camera – Full HD, 1080p EMI hardened camera system with ultra-low emissions.
- Fiber Optic Converters – EMI hardened fiber optic data converters for CAN, USB, Automotive Ethernet and others.
HVT – Since 1998, the intelligent provider of top quality, high performance EMC test solutions.
Visit our booth and see our new 250S6G18, a fully solid state, air-cooled, RF Power Amplifier delivering 250 Watts from 6 to 18 GHz. This is your TWT replacement for testing from 6 to 18 GHz for field levels of 200 V/m and higher.
While you’re in the booth, ask to see demonstrations of our newest release of emcware, 7. Fully included in the purchased product, emcware 7 gives you the capability to perform NSA and sVSWR testing on your OATS or semi-anechoic chamber for site validation for radiated emissions testing.
We will be showcasing our wide selection of RF power amplifiers, Conducted Immunity Systems, emcware, field probes, and accessories from 10 kHz to over 40 GHz.
SunAR RF Motion will also highlight products such as their EMI test antennas and antenna positioning equipment.
Our capabilities in the RF Power space have been well known for over 50 years, and we aren’t stopping or resting, as we continue to push past the boundaries of power limits and frequency limits.
Also, don’t forget to stop by the booth and enter to win our yearly prize giveaway!
Stop by IEEE EMC+SIPI Booth #301 to speak with one of our test and measurement experts, see our variety of product solutions, or experience on of our in-person demos. With decades of experience in compliance testing and measurement, ETS-Lindgren is Committed to a Smarter, More Connected Future.
Not attending the show? Contact your local ETS-Lindgren representative or visit https://www.ets-lindgren.com.
- IMU3000 – Multi-function generator for Surge, EFT, Power Fail, Ringwave and more.
- MIL3000 – Flexible solution for MIL-STD-461 CS06, CS106, CS115 & CS116 transients. The most advanced military conducted susceptibility test generator available.
- ESD3000 – Handheld, AA rechargeable battery operated Electrostatic Discharge simulator. Precise, reliable waveforms.
- Pulse Measurement – Free space D-dot electric field measurement chain.
- EMC Positioners – Ultra accurate and reliable boresight antenna mast, field probe positioner and compact turntable.
- MT400 – 400W Class A solid state power amplifier.
- EMI Hardened Camera – Full HD, 1080p EMI hardened camera system with ultra-low emissions.
- Fiber Optic Converters – EMI hardened fiber optic data converters for CAN, USB, Automotive Ethernet and others.
HVT – Since 1998, the intelligent provider of top quality, high performance EMC test solutions.
KGS continued their global reach to further expand into thermal interface materials and vibration damping gels and shock absorbing rubber sheets.
KGS persists to evolve and develop new products to meet strict requirements of the automotive industry, especially those for the EV market.
KGS product line include solutions for mechanical, electrical (EMC), electro-mechanical purposes including (but not limited to) EMI absorbers, massive assortments of ferrite cores, cable shields, conductive foam, shielding tapes, EMC grounding straps, SMT grounding components, a wide variety of thermal interface materials, vibration dampers, and plastic straps/clamps/spacers.
In 2020, the US-based operations celebrated its 30th year of successful business in Silicon Valley.
Microwave Vision Group
Our EMC team will answer you’re your questions about the facilities MVG designs, manufactures and delivers:
- EMC Test Chambers
- Shielded Doors
- RF Shielded Rooms
- EMC Antennas
- EMC Absorbers
MVG offers a full array of high-performance anechoic chambers and other products specially designed to meet the increased performance demands of today’s EMC testing requirements.
This event will create great networking opportunities, you can find us Booth 513. Paul Duxbury, Director of Business Development for EMC, will be happy to discuss with you during the event!
With the most comprehensive arrays of “State of the Art” High-Power RF Systems and Modules, Ophir RF provides the power you need for EMC, Laboratory Test and Measurement, Electronic Warfare, Radar, Communications and Medical applications.
Our core products include RF Amplifiers covering the frequency range 10 kHz to 40 GHz, and 1 watt to 24 kilowatts of power. We are well known in the industry for successfully adapting amplifiers or custom designing solutions to suit each unique project.
Drop by our booth #509 to discuss how we can assist you in your power and testing requirements.
KGS continued their global reach to further expand into thermal interface materials and vibration damping gels and shock absorbing rubber sheets.
KGS persists to evolve and develop new products to meet strict requirements of the automotive industry, especially those for the EV market.
KGS product line include solutions for mechanical, electrical (EMC), electro-mechanical purposes including (but not limited to) EMI absorbers, massive assortments of ferrite cores, cable shields, conductive foam, shielding tapes, EMC grounding straps, SMT grounding components, a wide variety of thermal interface materials, vibration dampers, and plastic straps/clamps/spacers.
In 2020, the US-based operations celebrated its 30th year of successful business in Silicon Valley.
Microwave Vision Group
Our EMC team will answer you’re your questions about the facilities MVG designs, manufactures and delivers:
- EMC Test Chambers
- Shielded Doors
- RF Shielded Rooms
- EMC Antennas
- EMC Absorbers
MVG offers a full array of high-performance anechoic chambers and other products specially designed to meet the increased performance demands of today’s EMC testing requirements.
This event will create great networking opportunities, you can find us Booth 513. Paul Duxbury, Director of Business Development for EMC, will be happy to discuss with you during the event!
With the most comprehensive arrays of “State of the Art” High-Power RF Systems and Modules, Ophir RF provides the power you need for EMC, Laboratory Test and Measurement, Electronic Warfare, Radar, Communications and Medical applications.
Our core products include RF Amplifiers covering the frequency range 10 kHz to 40 GHz, and 1 watt to 24 kilowatts of power. We are well known in the industry for successfully adapting amplifiers or custom designing solutions to suit each unique project.
Drop by our booth #509 to discuss how we can assist you in your power and testing requirements.
Raymond EMC may be the fastest growing EMC chamber company in North America! Our superior commitment to client care and customer service is setting us apart from the rest. Raymond EMC is changing the concept of what you deserve when you procure a chamber. We strive to facilitate a smooth and easy process while working diligently at exceeding expectations.
Stop by to meet members of our dedicated team to find out more about our efficient and cost-effective approach to chamber projects. Ask us about our many products, services and turn-key solutions, including our service and maintenance programs and have a look at some of the innovative initiatives we are taking.
Raymond EMC is proud of the product customization we can offer. Speak to our team about how we can tailor solutions to meet your exact requirements. Nothing is too small for our attention!
Make sure you stop by our booth for a fun game of Cornhole and the chance to win some prizes! Also don’t forget to check out the demonstration “Multiplying Competency: Remote & Autonomous Chamber Validation” by Raymond’s R&D Lead Nika Amralah and RATLR’s Phill Miller on August 1st 1:00-4:00 pm!
We can’t wait to see you!
Spira’s unique spiral design offers extremely low compression set, long life and high shielding. Gaskets are available both groove or surface mounted, EMI/environmental protection, and meet requirements including ITAR, DFAR and RoHS.
Featuring:
- Spira-Shield. All Spira gaskets utilize this patented spiral design which yields EMI shielding quality up to 165 dB, offering exceptionally long life. Lower cost commercial versions also available.
- EMI & Environmental Connector-Seal Gaskets. Pass your shielding tests the first time. Superior EMI and environmental protection for flange-mounted connectors in front or back mount configurations.
- Shielded Honeycomb Air-Vent and Fan Filters. High and reliable shielding at competitive prices.
- Groundbreaking book on EMI Shielding Theory. Visit our booth & enter to win a free copy!
Join us for our 45th Anniversary celebration!
Visit Spira’s booth to see the latest in EMI shielding inspiration and get expert application support. Spira products are manufactured in the USA, ISO-9001/AS9100 certified.
The passive division include inductors, ferrites, chokes, LEDs, capacitors, crystals, resistors, sensors, transformers and wireless charging coils. Board-to-Board, Wire-to-Board, Terminal Blocks, and Input/Output connectors are included in the electromechanical division. Online tools have been developed for use by engineering customers to design in magnetics for switchmode power supplies: REDEXPERT, for non-isolated, and isolated, flyback designs.
Visit booth 325 to talk with our technical experts and for immediate assistance, our LIVE chat team is available at https://www.we-online.com 24/7. Discover seamless support and solutions tailored to your needs.
Raymond EMC may be the fastest growing EMC chamber company in North America! Our superior commitment to client care and customer service is setting us apart from the rest. Raymond EMC is changing the concept of what you deserve when you procure a chamber. We strive to facilitate a smooth and easy process while working diligently at exceeding expectations.
Stop by to meet members of our dedicated team to find out more about our efficient and cost-effective approach to chamber projects. Ask us about our many products, services and turn-key solutions, including our service and maintenance programs and have a look at some of the innovative initiatives we are taking.
Raymond EMC is proud of the product customization we can offer. Speak to our team about how we can tailor solutions to meet your exact requirements. Nothing is too small for our attention!
Make sure you stop by our booth for a fun game of Cornhole and the chance to win some prizes! Also don’t forget to check out the demonstration “Multiplying Competency: Remote & Autonomous Chamber Validation” by Raymond’s R&D Lead Nika Amralah and RATLR’s Phill Miller on August 1st 1:00-4:00 pm!
We can’t wait to see you!
Spira’s unique spiral design offers extremely low compression set, long life and high shielding. Gaskets are available both groove or surface mounted, EMI/environmental protection, and meet requirements including ITAR, DFAR and RoHS.
Featuring:
- Spira-Shield. All Spira gaskets utilize this patented spiral design which yields EMI shielding quality up to 165 dB, offering exceptionally long life. Lower cost commercial versions also available.
- EMI & Environmental Connector-Seal Gaskets. Pass your shielding tests the first time. Superior EMI and environmental protection for flange-mounted connectors in front or back mount configurations.
- Shielded Honeycomb Air-Vent and Fan Filters. High and reliable shielding at competitive prices.
- Groundbreaking book on EMI Shielding Theory. Visit our booth & enter to win a free copy!
Join us for our 45th Anniversary celebration!
Visit Spira’s booth to see the latest in EMI shielding inspiration and get expert application support. Spira products are manufactured in the USA, ISO-9001/AS9100 certified.
The passive division include inductors, ferrites, chokes, LEDs, capacitors, crystals, resistors, sensors, transformers and wireless charging coils. Board-to-Board, Wire-to-Board, Terminal Blocks, and Input/Output connectors are included in the electromechanical division. Online tools have been developed for use by engineering customers to design in magnetics for switchmode power supplies: REDEXPERT, for non-isolated, and isolated, flyback designs.
Visit booth 325 to talk with our technical experts and for immediate assistance, our LIVE chat team is available at https://www.we-online.com 24/7. Discover seamless support and solutions tailored to your needs.
View Index
Military Standard 810 (MIL‑STD-810) Test Training
July 23-28
IEEE International Symposium on Antennas and Propogation and USNC-URSI Radio Science Meeting
July 31-August 4
2023 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)
September 4-8
EMC Europe
September 12-14
The Battery Show
European Microwave Week
September 21
2023 Minnesota EMC Event
October 1-6
45th EOS/ESD Symposium and Exhibits
October 4-6
The Battery Show India
October 8-13
45th Annual Meeting and Symposium of the Antenna Measurement Techniques Association (AMTA)
Fundamentals of Random Vibration and Shock Testing Training
December 4-7
Military Standards 810 (MIL‑STD-810) Test Training
