Efficient Signal Conditioning by a FIR Filter for Analog Signal Transmission over Long Lines
Veröffentlicht am 24.01.2012 in JINST Volume 7 2012 C01082
In the Belle II SVD readout chain the analog signals will be transmitted over long lines. This leads to signal distortion, caused by the frequency dependent transfer function of the cable and also by reflections, which occur whenever the line impedance changes.
One possibility to compensate these effects is a dedicated filter at the receiver end.
This paper describes the approach to realize the required filter as a finite impulse response (FIR) filter. We further show how such a filter can be implemented in the firmware of an FPGA and the required FIR coeffients can directly be calculated from the output signal of the APV25 front-end chip.
accepted for publication on 23 Dec. 2011
Autoren: Markus Friedl, Christian Irmler, Helmut Steininger
weitere Autoren: J. v. Hoorne
Kategorie: Reviewed Paper