By Topic

Reflections from bends in a printed conductor

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Rainal, A.J. ; AT&T Bell Lab., Whippany, NJ, USA

An electrical model which is known to characterize a reactive discontinuity on a lossless transmission line is used to determine the maximum signal reflection from a bend in a printed microstrip transmission line. For printed wiring board applications using the usual FR4 dielectric, the maximum signal reflection from a simple 90° bend is shown to be approximately 4.5% at an 80% signal risetime of 0.123 ns. Scaling laws for other risetimes and dielectrics are developed. A 180° bend and a mitered 45° bend are also treated. The electrical model yields signal reflections which agree well with corresponding experimental results. for bit rates as high as a few gigabits per second and suitable dielectrics, simple 90° bends are still adequate. For much higher bit rates and more gradual bends, other parasitics also become important and limit the performance of electrical interconnections

Published in:

Components, Hybrids, and Manufacturing Technology, IEEE Transactions on  (Volume:13 ,  Issue: 2 )