About Author

Lee Ritchey

Lee Ritchey jest uznawany za jeden z największych branżowych autorytetów w zakresie projektowania płytek PCB i układów o dużej szybkości. Jest założycielem i prezesem Speeding Edge, firmy konsultacyjno-szkoleniowej w zakresie inżynierii. Prowadzi prywatne kursy szkoleniowe dla firm specjalizujących się w zaawansowanych technologiach, a także wykłada na kursach prowadzonych przez Speeding Edge i firmy partnerskie. Ponadto Lee świadczy usługi konsultingowe dla wiodących producentów wielu różnych typów produktów technologicznych, takich jak np. produkty internetowe, serwery, wyświetlacze oraz produkty do śledzenia/skanowania przy użyciu kamer. Aktualnie jest zaangażowany w charakteryzowanie materiałów do ultraszybkich łączy danych stosowanych w Internecie.
Przed założeniem Speeding Edge Ritchey piastował wiele kierowniczych stanowisk, w tym Program Manager w firmie 3Com Corporation w Santa Clara oraz Engineering Manager w firmie Maxtor. Poprzednio był założycielem i wiceprezesem ds. inżynierii i marketingu w Shared Resources, firmie świadczącej usługi projektowe i specjalizującej się w projektowaniu wysokiej klasy superkomputerów, stacji roboczych oraz produktów do przetwarzania obrazu. Na wcześniejszym etapie swojej kariery projektował podzespoły wykorzystujących fale radiowe i mikrofale dla programu kosmicznego Apollo w NASA oraz dla innych platform kosmicznych. Ritchey uzyskał dyplom B.S.E.E. Na Kalifornijskim Uniwersytecie Stanowym w Sacramento, który ukończył z wyróżnieniem. W 2004 Ritchey uczestniczył w przygotowywaniu kolumny „PCB Perspectives”, która ukazywała się co miesiąc w uznanej w branży publikacji handlowej EE Times.

Recent Articles

Crosstalk or Coupling

Crosstalk or Coupling The words crosstalk and coupling are used to describe the injection of electromagnetic energy from one transmission line to another running nearby. In printed circuit boards crosstalk is usually two traces running side by side in the same layer or one over the top of the other in adjacent layers. This coupled energy appears as noise on the victim trace and can cause malfunctions if the amplitude is too large. Learn how this noise is transferred Przeczytaj artykuł

Transmission Line Termination Techniques in High-Speed Design

Transmission Line Termination Techniques in High-Speed Design A transmission line is a pair of conductors used to deliver energy in the form of an electromagnetic field. Most of us are familiar with the wires that lead to our houses delivering the power needed to operate our lights and appliances. In the context of PCB design, it is a signal in a signal layer on top of a plane or between two planes. TRANSMISSION LINE TERMINATION TECHNIQUES FOR PCB DESIGN The purpose of this section is to explain what Przeczytaj artykuł

Rick Hartley's Books and Reading List EMI & Noise Control Reading List PCB Design for Real-World EMI Control - Bruce R. Archambeault (Kluwer Academic Publishers Group) - ISBN 978-1-4757-3642-7 Principals of Power Integrity for PDN Design Simplified - Larry D. Smith & Eric Bogatin (Prentice Hall) - ISBN 978-0-13-273555-1 Electromagnetic Compatibility Engineering - Henry Ott (2nd Edition - John Wiley and Sons) - ISBN 978-0-470-18930-6 Digital Design for Interference Specifications- A Przeczytaj artykuł

Power Delivery System Design

Power Delivery Systems Design This article is intended to define the new challenges and provide guidance in how to successfully engineer the Power Delivery System (PDS) so it meets the needs of new technologies. As integrated circuit technology allows for billions of transistors on a single IC, it has resulted in very powerful systems on a chip. This has made it possible to put the equivalent of supercomputers inside video games, cell phones, and a host of other products that Przeczytaj artykuł

Interplane Capacitance and PCB Stackups

Interplane Capacitance and PCB Stackups This article is intended to provide guidance on the process of designing PCB stackups. It is useful to look at the evolution of technology as time has passed in order to see how the demands on the PCB stackup have changed. In the early days of PCB fabrication, logic circuits were so slow that the only concerns were how to make connections between logic or discrete parts and provide a path for the DC power to each part. All a needed to do was Przeczytaj artykuł

Printed Circuit Fabrication

Introduction to Printed Circuit Fabrication for the PCB Designer Want to learn about printed circuit fabrication? Learn from expert Lee Ritchey in this article. Przeczytaj artykuł

4:12:02 Lee Ritchey's Highspeed Design Class Learn everything you need to know about High Speed Design from Lee Ritchey. This class was recorded at AltiumLive Munich and is rich in design wisdom and knowledge. Obejrzyj film

Win at Power Delivery System Design

Win at Power Delivery System Design This article is intended to define the new challenges and provide guidance in how to successfully engineer the Power Delivery System (PDS) so it meets the needs of new technologies. As integrated circuit technology has made it possible to put billions of transistors on a single IC it has resulted in very powerful systems on a chip. This has made it possible to put the equivalent of supercomputers inside video games, cell phones and a host of Przeczytaj artykuł

Differential pairs

Confused About Differential Signaling or Clocks? Check out this quick snippet of the Altium Podcast with guru of high speed design Lee Ritchey The primary reason that differential signaling is dominating the digital world is that far higher data bandwidths can be achieved over a pair of wires than with parallel, single-ended signaling protocols. The Internet as we know it would not be possible without differential signaling. This information is intended to clear up any confusion about Przeczytaj artykuł

Everything You Need for Successful PCB Stackup Design There are three demands placed on stackup design: controlled impedance, crosstalk control and the need for interplane capacitance. Some fabricators could get the impedance right in a stackup, but there is no way for them to account for the other two. This responsibility rests with the design engineer who is the only one who knows what is needed and how to implement the needed control. This information is intended to provide guidance on the Przeczytaj artykuł

Noise Transfer is Annoying, Learn How to Contain Crosstalk

Noise Transfer is Annoying in PCBs, Learn How to Contain Crosstalk from expert Lee Ritchey The words crosstalk and coupling are used to describe the injection of electromagnetic energy from one transmission line to another running nearby. In printed circuit boards crosstalk is usually two traces running side by side in the same layer or one over the top of the other in adjacent layers. This coupled energy appears as noise on the victim trace and can cause malfunctions if the amplitude is too large. Learn how this noise is transferred Przeczytaj artykuł

How to Control Switching Signals with Terminations for Best Signal Quality

How to Control Switching Signals with Terminations for Best Signal Quality A transmission line is a pair of conductors used to deliver energy in the form of an electromagnetic field. Most of us are familiar with the wires that lead to our houses to deliver the power needed to operate our lights and appliances. In the context of PCB design, it is a signal in a signal layer on top of a plane or between two planes. TRANSMISSION LINES AND TERMINATIONS The purpose of this section is to explain what transmission lines are Przeczytaj artykuł