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Circuit arrangement for signal detection having current mirror with cascode coupled transistors

  • US 7,109,845 B2
  • Filed: 02/04/2004
  • Issued: 09/19/2006
  • Est. Priority Date: 02/11/2003
  • Status: Active Grant
First Claim
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1. A circuit arrangement for detecting a received signal, comprising:

  • a rectifier having an input adapted to have a received signal applied thereto and having an output adapted to provide a rectified signal;

    a signal capacitor connected to said output of said rectifier;

    a signal evaluating circuit connected to said signal capacitor; and

    a discharge current sink that is connected to said signal capacitor and that comprises a current mirror circuit comprising plural transistors circuit-connected with one another in a cascode arrangement.

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