Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Optimization of microstrip-to-via transition for high-speed differential signaling on printed circuit boards by suppression of the parasitic modes in shared antipads

 
: Duan, X.; Hardock, A.; Ndip, I.; Schuster, C.; Lang, K.-D.

:

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Symposium on Electromagnetic Compatibility, EMC 2014. Proceedings : 4-8 August 2014, Raleigh, North Carolina
Piscataway, NJ: IEEE, 2014
ISBN: 978-1-4799-5544-2 (Print)
ISBN: 978-1-4799-5545-9
pp.234-239
International Symposium on Electromagnetic Compatibility (EMC) <2014, Raleigh/NC>
English
Conference Paper
Fraunhofer IZM ()

Abstract
This paper discusses the behavior of the microstrip-to-via transition for high-speed differential signaling considering the frequency range up to 100 GHz. In particular, the generation and propagation of higher order parasitic modes at the shared antipad area are studied and their impact on differential signal quality is analyzed. A combined antipad scheme that uses separate instead of shared antipads on the outer reference planes is proposed for the suppression of the parasitic modes and at the same time maintaining impedance uniformity along the via segment. Full-wave simulation results show a considerable improvement of signal transmission by the proposed scheme, especially in the frequency range from 40 to 60 GHz for the microstrip-to-via transition in multilayer printed circuit boards.

: http://publica.fraunhofer.de/documents/N-349727.html