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Buried Capacitance in Printed Circuit Boards

You are cordially invited to a  Technical Presentation by the IEEE Huntsville EMC Chapter.  Mr. John Andresakis of Oak-Mitsui Technologies, will present “Use Of Buried Capacitance Layers In Printed Circuit Boards: Performance And Lessons From A Real World Example”.

A complimentary supper of “Fried Chicken with All the Fixin’s” will be provided, care of Mr. Mike Kirk, Agilent Technologies.

Abstract

Embedded capacitor technology has been driven by the need to save board area and/or reduce board size, increase functionality, lower costs and improve electrical performance. This technology has been utilized to enhance signal integrity, reduce impedance at high frequency and dampen noise, and not necessarily just to remove discrete capacitors.

We will show that by using thin core planes and simulation tools one can reduce the number of discrete capacitors and get better electrical performance. The actual number and type (size) of capacitors removed will be presented. In addition to discrete capacitor reduction, the amount of electro-magnetic radiation from the board (which can cause EMI issues) will be shown to be reduced by utilizing the embedded capacitor planes. This is attributed to the reduction in power/ground plane resonance. With a good predictive model, the decision to utilize embedded capacitors is simplified.

The meeting will be held at ADTRAN in the East Tower Lobby Conference Room. The meeting is open to anyone interested in EMC.  IEEE membership is not required to attend.

Please RSVP to Paul Stover by 11 May 2010 with your intent to attend.

I hope to see you there!

Event Details and Reservations

Date: Thursday, 13 May 2010

Time: 5:30 p.m.

Location: ADTRAN Inc. 2 East Conference Center Room #273

(Do not park in the visitor parking lot or try to use the main entrance to the East Tower.)

Related Sites

IEEE EMC Society

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Jack McFadden
May 10th, 2010

Signal Integrity and EMC – A Twisted Pair

To All Hardware Designers,

The Huntsville Chapter of the IEEE Electromagnetic Compatibility (EMC) Society is hosting:
EMC 2010: SI and EMC – A Twisted Pair” on Tuesday, April 20th at the Von Braun Center.

The one day engineering seminar presenter is Dr. Eric Bogatin of Bogatin Enterprises LLC. Dr. Bogatin is an IEEE Distinguished Lecturer (DL) and for the past 20 years has widely taught and authored numerous papers and books on the topic of signal integrity (SI) and high speed printed circuit board (PCB) design. Dr. Bogatin has held senior engineering and management positions at Bell Labs, Raychem, Sun Microsystems, Ansoft and Interconnect Devices.

The subjects of SI and EMC are deeply intertwined and both are critical to the reliability and performance of modern electronic systems. Engineers either working in or interested in the fields of SI or EMC will come to appreciate how robust engineering practices in one field will pay off with significant dividends in the companion field.

Dr Bogatin will explore practical differential pair design, how to select capacitors for a robust power distribution network, how to utilize S-Parameters for insight into SI and EMC performance, and how to correctly engineer current return paths to minimize ground bounce and noise that commonly degrade digital system performance.

Please visit HuntsvilleEMC for further information and to register online.  View the event brochure here.

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Doug Parker
February 25th, 2010

Abraham Lincoln Assists With EMI Testing

EMC Chapter Technical Meeting

Date: Thursday January 21, 2010 – 5:30 p.m.
Location: ADTRAN Inc., East Tower 2nd Floor, Conference Center Room #273
Speaker: Mr. Alan Flack, EMC Compliance
Meal Sponsor: Mr. Ken Javor, EMC Compliance
“Sunday Dinner with Pot Roast and Vegetables”

The Huntsville chapter of the IEEE Electromagnetic Compatibility (EMC) Society invites you to attend a technical meeting on January 21, 2010. The program will begin at 5:30 pm with Mr. Ken Javor of EMC Compliance sponsoring a free catered meal. Mr. Alan Flack’s presentation will begin at approximately 6:20 pm after a short chapter status update, and will last approximately one hour.

Abraham Lincoln is quoted as saying that if he had eight hours to chop down a tree, he would spend six of those hours sharpening his axe. This presentation is about replacing the axe with a chainsaw. Spectrum analyzer surveys of platform (aircraft, ground vehicles, ships) antennas are the ultimate check that RFI has been properly controlled. As envisioned in MIL-STD-464, an analyzer is connected to a platform antenna and the antenna band is swept, looking for RFI signals. This technique fails when the antenna must be tuned for each frequency of operation. In the past, this was only the case for HF, but today multi-band antennas covering 30-512 MHz are also tunable. The presenters have developed a hardware solution that allows broadband sweeping of a tuned antenna from 2 – 512 MHz (COMM Bands: HF, VHF-FM, VHF-AM, and UHF-AM) without tuning.

This event is open to anyone interested in EMC.  IEEE membership is not required to attend.  However, seating is limited, so please RSVP to Paul Stover by close of business on January 19, 2010 with your intent to attend and if you will be joining us for the meal.

Links: IEEE EMC Society, IEEE Huntsville EMC Society

I hope to see you there!

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Jack McFadden
January 8th, 2010

Who’s Afraid of Maxwell’s Equations?

The November 12th meeting was held at the ADTRAN Mark C. Smith Conference Center. This was a joint meeting with the local IEEE AES Society Chapter. The presentation was provided by the IEEE EMC Society President Elya Joffe who was in town for the EMC Society Board of Director’s meeting. A meal was catered for the event and was provided by the local Chapter and the IEEE EMC Society board. The presentation drew record attendance with a total of 135 from across many of the IEEE Societies within the Section. We want to thank the EMC Society Board members who took time out of their busy schedules to attend our meeting.

Huntsville_6

To help promote the IEEE and encourage membership a desktop display provided information to all those attending the meeting. The meeting started off with some general business. The meeting schedule was announced for 2010 and we have the schedule filled with meals sponsors. The announcement of the 2010 officers was made. As part of the business meeting the chapter was introduced to the new officers voted in for 2010. The new officers are: Chair – Jack McFadden (Wyle), Vice-Chair – Lon Brolliar (Phase IV), Treasurer – Tom Perry (Jacobs/Sverdup), Secretary – Jeff Whitmire (ADTRAN), Member At Large – David Cavanaugh (Benchmark), Member At Large – Vaughan Carlson (Value Eng). We want to congratulate the new officers who have agreed to step forward this year. Three of our new officers have not served in leadership positions with the chapter before this term. This is really exciting as we develop new leadership within the chapter! We also extend our gratitude to the outgoing officers for 2009. The 2009 officers were Chair – Doug Parker (ADTRAN), Vice-Chair – Jeff Whitmire (ADTRAN), Treasurer – Jim Stone (UL), Secretary – Jack McFadden (Wyle), Member at Large – Paul Stover (ADTRAN) and Member at Large – Hansel Cornutt (retired). We also want to thank our meeting meal sponsors. Their support is part of the total success for the chapter.

Doug Parker presented the enlightening and entertaining introduction to our speaker, Mr. Elya Joffe. We had not realized that Mr. Joffe was so well acquainted with Mr. Maxwell and that his new book had reached such national recognition. After graciously acknowledging the introduction, Mr. Joffe’s presented “Who’s Afraid of Maxwell’s Equations? A Practical Approach”.

The presentation was very informative and well received. Even with his arrival from Israel earlier in the day, Mr. Joffe was able to inject excitement into the presentation and involve the audience. He was able to effectively dispel some of the magic around the basis of electromagnetic theory. The explanations were presented in ways that all the practicing (and retired) engineers in the audience obtained a new perspective on some parts of the theory. He held the audience to the end as he completed the journey through the material. There were much lively interaction with the audience after the presentation with many comments and questions.

We want to thank Mr. Joffe for providing this presentation to the chapter. We are not sure if he keeps an a little pink battery powered bunny in his pocket or what, but between the travel, board meetings and presentation, his energy level never seemed to change.

It has been an exciting 2009 and we look forward to the events planned for 2010!

To see everything going on with the Huntsville Chapter, check out our IEEE EMC Huntsville Chapter website.

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Doug Parker
January 8th, 2010

News And Events For The Huntsville IEEE EMC Chapter

For all news and events regarding the Huntsville IEEE EMC Chapter and the EMC Society  please check out our online newsletter at: http://www.ewh.ieee.org/soc/emcs/acstrial/newsletters/summer09/chapter_chatter.html

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Doug Parker
November 19th, 2009

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