High-Speed PCB Design – Signal Integrity and EMI Considerations

High-Speed PCB Design - Signal Integrity and EMI Considerations

(DRAFT COPY – SUBJECT TO FURTHER CHANGES)

Course Synopsis

In the past, those working in the digital field share little commonality in terms of theories, analysis and design principles with their counterparts who work with RF/Microwave frequencies. Today however the line of separationis blurring due to the reduction in digital signal transition time or the consequent rise in bandwidth requirement.

Whether a circuit is ‘high-speed’ or not depends on the digital signal transition time. Hence this course is relevant not only for those working with high speed clock but for almost all circuit design engineers who have seen their signal transition time reducing over the years.

The underlying knowledge for those working in these fields is RF/Microwave theories or in their more basic form, Maxwell’s Equations. EMI forms the subset of knowledge within the area of signal integrity. Hence this course imparts first the RF/Microwave theories before going into discussion on signal integrity. More focused discussion

Course Content
1. Introduction – Fundamental Concepts and Signal Integrity (SI)

•Definition of SI.

•Why is SI important ? (SI and electronic systems)

•SI and electromagnetic interference/compatibility (EMI/EMC).

•Field theory versus circuit theory perspective of electronic systems.

•Time and frequency domain representation of signals.

•Analog and digital circuits/signals.

•Bandwidth of signals.

•What do we mean by “High-Speed”?

•Interconnect.

2. Printed Circuit Board (PCB), Interconnect and Packaging

•Brief review of PCB technology and terminology (fabrication, material, cost).

•Traces, transmission lines and interconnect.

•Integrated circuit packaging (Electrical aspects).

3. Transmission Lines and Signal Propagation

•Transmission theory – propagation modes, telegraphic equations, distributed circuit model.

•Transmission configurations.

•Digital signals and transmission line – delay, attenuation, reflection, crosstalk and dispersion.

•Termination.

•Transmission line characterization through measurement in time domain (Time Domain Reflectometry-TDR) and frequency domain (Network measurement).

4. PCB Layout and Grounding

•Discontinuities and other higher order mode effect - bend, vias, pads, connectors.

•Basic layout rules.

•Basic grounding rules.

5. Clock Distribution and Jitter

•Timing margin and clock skew.

•Drivers.

•Isolating clock receivers from clock bus.

•Delay adjustment.

6. Brief Review of Computer Modeling, Simulation and CAD Tools

•Numerical methods for Maxwell’s Equations and electromagnetic field solver program.

•EM modeling of structures.

•Circuit simulations.

•Behavioral modeling.

•System simulation.

•Some commercial tools.

7. Miscellaneous

•Brief review of differential signaling, design and termination.

•Comparison of high-speed digital design and microwave circuit design.

•Probing of high-speed signals.

8. EMC - An Overview

•Why the concern of EMC?

•EMI regulations

•Common EMI measurement units

9. Controlling Radiated EMI by Design

•Radiation Mechanism

•Differential-mode (DM) and common-mode (CM) radiation

•Power bus design consideration

•Fundamentals of good PCB layout practices

•Case studies and experimental results

Who Should Attend

Technicians and engineers who work with high-speed digital circuits in the role of :

•product marketing

•application engineering•design and development

•test development•product engineering

•testing

•system architect

•PCB layout specialist

•EMC specialist

Refreshment : Morning break, lunch and tea break will be provided throughout the course durationStudent’s Manual and Certificate of Attendance will be provided.

Consultant Profile

Associate Professor Dr See Kye Yak

Research Interests

Computational electromagnetic, electromagnetic compatibility design for electronic circuits, signal integrity designfor high-speed digital circuits, electromagnetic effects for integrated circuit packaging, and electromagneticradiation hazards

Education Background

•B. Eng. (First Class Honours), National University of Singapore.

•DIC, Ph.D., Imperial College of Science, Technology & Medicine, University of London, United Kingdom.

Professional Membership

High-Speed PCB Design – Signal Integrity and EMI ConsiderationsDreamCatcher Consulting Page 3 of 5

•Senior Member of IEEE (USA).•Chairman of IEEE EMC Society, Singapore Chapter.

•Member of Technical Committee of EMC and Radio Interference, SPRING, Singapore.

•Technical assessor for EMC & Telecom Laboratory, Singapore Laboratory Accreditation Scheme, Singapore Accreditation Council.

Past and Current Consultation Work

•Design, construct and commissioning of the FCC (Federal Communications Commissions, USA) listed OATS(open area test site) radiated EMI test facility for Singapore Technologies Electronics Ltd, 1987.

•Design, delivery and commissioning of the Boon Lay MRT station’s electromagnetic shielding project, 1989-1990.

•EMC consultant to CET Technologies for military projects, 1998.

•Electromagnetic ambient measurements at the proposed wafer fabrication industrial sites (TampinesSouth, Tampines North, Pasir Ris and Woodland) for Jurong Town Corporation, 1999

•Invited workshop instructor, EMC Asia 99, 7-9 December 1999, Taipei.

•Electromagnetic ambient measurements at the proposed wafer fabrication industrial sites (Tanjong Kling) for Jurong Town Corporation, 2000.

•EMC consultant to Motorola for the SMRT communication system-upgrading project, 1999-2002.

•EMC consultant to PWD Consultants Pte Ltd for LTA contract 1241C: additions and alternations to 12existing underground MRT stations, 2000-2004.

•EMC consultant to Hyundai Asian Technics Pte Ltd for LTA contract C701 North-East Line depot project, 2001-2003.

•Course instructor for IES, “Cost-effective EMC analysis, design and management”, 19-20 April 2001.

•Course instructor for Activemedia Innovation Pte Ltd, “Controlling conducted and radiated EMI by design”, 8-9 September 2003.

•EMC consultant to PSB Corporation Pte Ltd for IDA project on EMI impact analysis of UWB technology,2003 – 2004.

Dr FWL KungEducation Background

•University Malaya, Kuala Lumpur. Qualification obtained – B.Eng in Electronic/Electrical (1st class).

•Malaya, Kuala Lumpur. Qualification obtained – M.EngSc in Electrical Engineering.

•Multimedia University, Cyberjaya. Qualification obtained – PhD in Electrical Engineering.

•Master Degree Thesis Title - Modeling of high-speed printed circuit board

•PhD Degree Thesis Title - Modeling of electromagnetic wave propagation in printed circuit board and related structures

Current Interests

•Modeling of microwave and high-speed digital PCB using numerical methods.

•RF and microwave circuit design. Design of low-power, short range RF transmitter on a free-lance basis (used for remote control and object tagging purposes).

•Embedded system design – in particular the design and building of miniature robots.

Strengths

•Independent, easy going, and prefers teamwork.

•Experience working in manufacturing and R&D environment.

•Good knowledge of electromagnetism, analog and digital electronics, and telecommunication.

•Experience in developing microcontrollers based products, based on Intel’s 8051 architecture and Microchips PIC family.

•Experience in active and passive RF circuits design and measurements, such as design of small and large signal amplifiers, voltage-controlled oscillators, mixers, phase-locked loop and filters.

•Experience in using Electronic Design Automation (EDA) tools such as Advance Design System (ADS) from Agilent Technologies, and Ansoft Designer from Ansoft Corportion. Also have good working knowledge of linear and non-linear simulation techniques of SPICE (Simulation Program with Integrated Circuit Emphasis), on which many commercial EDA tools are based.

•Good working knowledge of test and measurement instruments, such as digital storage oscilloscope, spectrum analyzer, vector network analyzer and RF signal generator.

•Experience in developing software using C/C++, assembly language and Microsoft Visual Basic.

Consultation Experiences

•Delivered a series of talk to Agilent Technologies Sdn Bhd, Penang on 14th Feb 2000. Titles of talk are “Smart Card Technology” and “Electromagnetic Compatibility/Electromagnetic Interference”.

•Delivered a course on practical measurement of high frequency circuit using TDS8000 (a product from Tektronix Inc.) digital sampling oscilloscope (DSO) to Tekmark Sdn Bhd, 7th March 2002.

•Delivered a short course entitled “Analog Electronics” to Agilent Technology Sdn Bhd, Penang, 14-15th March 2003.

•Assisted Multimedia Development Corporation (MDC) by being an assessor for MGS (Multimedia Grant Scheme), July 2003.

•Delivered a short course entitled “Active and Passive RF Circuits” to Agilent Technologies Sdn Bhd, March to April, 2004.

Firm Profile

Business Objectives

We are providing a Professional Training Courses in the fieldof communication (RF/MW, Wireless, Optical, Digital) to manufacturers and communication service providers.Our courses are conducted by Associates who are senior technical staff and recognized experts in their field ofendeavor. They are normally practicing engineers and university lecturers.

Value Proposition

What

WE delivers training courses which are designed to reinforce fundamental concepts, in order to helpworking professionals apply the knowledge in a real-life environment.

Why

Rapid changes in technologies together with time-to-market pressure makes continuous knowledge acquisitionessential for professionals in the technology industry. While there are many ways for knowledge to be acquired,classroom training remains a fast, effective (cost and results) and focused means.

When

It is not only important for trainings to be delivered but it is essential they are delivered timely, to cope with therapid changes in technologies and the need to ramp-up engineering resource to cope with market demand.

WhoWe teaching resource comprises of

•Associates who are practicing engineers from the industry. These technical experts not only possess strongtechnical competency but also work with the latest technologies and therefore are able to share real-life engineering experience with the students.

•University lecturers who have invaluable experience in delivering knowledge and possess the breadth and depth of technical subject understanding. They are often industry consultants in their specialized fields of knowledge.

How

The training courses can be delivered at your site to save on travel expenses or conducted outside for minimumdistraction, to cater for your needs. To meet your training needs, the courses range from standard courses to customized ones, for example :

•Public courses which are regularly scheduled

•Modular courses which are packaged to meet customer’s requirement, on demand basis

•Customized courses which are developed to meet special requirements

•Long-term engagement on contract basis

Other Services

Besides technical training, the pool of knowledge within the firm is able to deliver other knowledge-based services such as :

•Consulting in specialized fields•Designing and implementing custom solutions

•Developing training course content