×

Photodetector with improved signal-to-noise ratio

  • US 4,139,767 A
  • Filed: 10/17/1977
  • Issued: 02/13/1979
  • Est. Priority Date: 10/17/1977
  • Status: Expired due to Term
First Claim
Patent Images

1. A photodetector/receiver circuit comprising:

  • a voltage source having a positive and a negative terminal;

    a first resistor connected between said positive terminal and the cathode of a photodetector diode;

    a second resistor substantially equal in resistance value to said first resistor, connected between said negative terminal and the anode of said photodetector diode;

    said anode and cathode capacitively coupled, one to the inverting input of a differential amplifier, and the other to the noninverting input; and

    the output of said differential amplifier comprising the output of said photodetector/receiver circuit.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×