CST – Computer Simulation Technology

Optimization of Connector-Track Interface
S. Kapora, A.P.J. van Deursen
Electronics Systemintegration Technology Conference, 2006.
Volume: 1; 5-7 Sept. 2006
498 - 502
Connectors significantly influence the total signal transmission on printed circuit board tracks. Experimental results for standard and modified SMA connectors are presented, based on measurements with a vector network analyzer up to 18 GHz. The central pin plays an important role, as it causes a resonant signal reflection near 10 GHz when used at the manufactured length. Reduction of the length (backdrilling) shifts the resonance to higher frequencies and diminishes its amplitude. 3D-simulations show a good agreement between the calculated transmission parameters and measurement results. Crosstalk measurements show the advantage of the shielded track over the traditional microstrip lines.

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