Bessel Lowpass Filter  
Model Name   LOWPASS(BESSEL_2)
LOWPASS(BESSEL_4)
LOWPASS(BESSEL_2_DIGITAL)
 
Symbol   No Symbol  
Generics  
Name   Type   Default   Unit   Min   Description  
FC   REAL     Hz   >0.0   cut-off frequency  
GAIN   REAL   1.0       voltage gain  
 
Ports  
Interface   Name   Type/Nature   Description  
terminal   INP   ELECTRICAL   controlling terminal  
terminal   OUTP   ELECTRICAL   output terminal  
 
Description   The architecture BESSEL_2 realizes a second order analog Bessel
lowpass. The architecture BESSEL_4 realizes a fourth order analog
Bessel lowpass. The cut-off frequency is FC.
The architecture BESSEL_2_DIGITAL realizes a second order digital
Bessel lowpass. The cut-off frequency is FC. The sampling
frequency is 4*FC.

 
References   Tietze, U,; Schenk, C.: Halbleiter-Schaltungstechnik.
Heidelberg: Springer-Verlag, 2002.

Schruefer, E.: Signalverarbeitung.
Muenchen, Wien: Carl Hanser Verlag, 1990.

 
Dependencies  
Logical Library   Design Unit/Design Entity  
IEEE_proposed   ELECTRICAL_SYSTEMS  
IEEE   MATH_REAL  
 
Source   See source code  
Example   See test-bench