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<!DOCTYPE model SYSTEM "/usr/local/vamdoc-1.0.2-kluwer/config/model.dtd"><model>
  <symbol>../symbol/lowpass.png</symbol>
  <comments>
    <title>Bessel Lowpass Filter</title>
    <model_name>LOWPASS(BESSEL_2)<br></br>LOWPASS(BESSEL_4)<br></br>LOWPASS(BESSEL_2_DIGITAL)</model_name>
    <library>N/A</library>
    <structure>N/A</structure>
    <description>The architecture BESSEL_2 realizes a second order analog Bessel<br></br>lowpass. The architecture BESSEL_4 realizes a fourth order analog<br></br>Bessel lowpass. The cut-off frequency is FC.<br></br>The architecture BESSEL_2_DIGITAL realizes a second order digital<br></br>Bessel lowpass. The cut-off frequency is FC. The sampling<br></br>frequency is 4*FC.<br></br><br></br></description>
    <link_source><A HREF="../src/lowpass.vhd">See source code</A></link_source>
    <reference> Tietze, U,; Schenk, C.: Halbleiter-Schaltungstechnik.<br></br> Heidelberg: Springer-Verlag, 2002.<br></br><br></br> Schruefer, E.: Signalverarbeitung.<br></br> Muenchen, Wien: Carl Hanser Verlag, 1990.<br></br> <br></br></reference>
    <dependency>
      <library>IEEE_proposed</library>
      <design_unit>ELECTRICAL_SYSTEMS</design_unit>
    </dependency>
    <dependency>
      <library>IEEE</library>
      <design_unit>MATH_REAL</design_unit>
    </dependency>
  </comments>
  <interface>
    <parameter>
      <name>FC</name>
      <type>REAL</type>
      <default></default>
      <unit>Hz</unit>
      <min> &gt;0.0</min>
      <comment> cut-off frequency </comment>
    </parameter>
    <parameter>
      <name>GAIN</name>
      <type>REAL</type>
      <default>1.0</default>
      <unit></unit>
      <comment> voltage gain</comment>
    </parameter>
    <port>
      <port_id>terminal</port_id>
      <name>INP</name>
      <port_type>ELECTRICAL</port_type>
      <comment> controlling terminal</comment>
    </port>
    <port>
      <port_id>terminal</port_id>
      <name>OUTP</name>
      <port_type>ELECTRICAL</port_type>
      <comment> output terminal</comment>
    </port>
  </interface>
</model>
