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22 The PCB Magazine • April 2017 ing. A choice should only be made after consid- ering these options. Remember with any new materials it is very important to find fabricators that are knowledgeable about processing these new materials. PCB References 1. Glenn Oliver and Sidney Cox, "Design, Fabrication and Electrical Analysis of High- Speed Flex," IPC International Conference on Flexible Circuits, June 2012. 2. Glenn Oliver, Thomas McCarthy, Steve Kelly, "Lower Loss and Process Friendly Multi- Layer Flexible Interconnect," DesignCon 2016. 3. Glenn Oliver, Jim Nadolny, Deepukumar Nair, "Lower Loss and Process Friendly Multi- Layer Flexible Interconnect," DesignCon 2012. 4. Sidney Cox and Glenn Oliver, "New Ma- terials in Flex Circuit Applications," IPC Interna- tional Conference on Flexible Circuits, June 2011. 5. Sidney Cox, "New Low DK, Low DF Flex Laminate for High-Speed Controlled Impedance Applications," IPC International Conference on Flexible Circuits, June 2010. 6. Rogers Corp. article: "High Frequency Circuits" by John Coonrod 7. Dupont article: "Using Flex in High-Speed Applications" by Glenn Oliver. 8. Sidney Cox, "Flexible Circuit Materials for High Temperature Applications," IPC APEX EXPO, February 2015. G. Sidney Cox is the principle at Cox Consulting. I-Connect007 is excited to an- nounce the release of The Printed Circuit Designer's Guide to… Secrets of High-Speed PCBs – Part 1, by Polar Instruments. The Printed Circuit Designer's Guide to…is an ongoing series of mi- cro eBooks specifically dedicated to the education of PCB designers. This book series stands to become the gold standard for people seeking the most relevant design information available. Authored by Polar Instruments Martyn Gaud- ion, it is written to assist EEs, PCB designers, pro- curement professionals, and PCB fabrication pro- fessionals and managers at all levels, and offers the greatest benefit to design and procurement people by illustrating what can realistically be achieved in the final product. With this knowl- edge, engineers can design producible boards, and buyers can purchase PC boards using realis- tic specifications. "The concepts presented are applicable to most PC boards in today's products, but are particularly suited to very high- speed systems and PC boards," said Rick Hartley of RHartley Enterprises. "Throughout the eBook, an emphasis is placed on cost-effective design and fabrication." Eric Bogatin, Ph.D., Dean of the Signal Integrity Academy, said, "The Printed Circuit Designer's Guide to… Secrets of High-Speed PCBs – Part 1 rolls back the covers to illustrate the practical principles behind many of the confusing topics that arise in the overlap between manufacturing, materials, and signal integrity performance." The Printed Designer's Guide to… Secrets of High-Speed PCBs – Part 1 is an excellent guide to understanding PC board impedance control and material losses, with solid emphasis on what can be designed versus what can be fabricated, and how to bridge the two disciplines. To download this book for free, click here. Find all the titles in our eBook series by visiting our library at www.I-007eBooks.com. I-Connect007 Launches The Printed Circuit Designer's Guide to... Secrets of High-Speed PCBs – Part 1 Micro eBook MATERIAL CHOICES FOR HIGH-SPEED FLEXIBLE CIRCUITS