×

BROADBAND DRIVER WITH EXTENDED LINEAR OUTPUT VOLTAGE

  • US 20200136560A1
  • Filed: 10/29/2018
  • Published: 04/30/2020
  • Est. Priority Date: 10/29/2018
  • Status: Abandoned Application
First Claim
Patent Images

1. A transmitter driver for preparing input electrical signals for output to a modulator comprising:

  • first and second inputs for inputting first and second input electrical signals;

    a buffer stage for shifting a reference of the first and second input electrical signals;

    an amplifier stage receiving the first and second input electrical signals, including;

    first and second differential pair transistors forming a differential pair connected to the buffer stage;

    first and second outputs connected to second terminals of the first and second differential pair transistors, respectively, for outputting first and second output electrical signals;

    first and second auxiliary transistors connected to the second terminals of the first and second differential pair transistors, wherein the first and second auxiliary transistors are capable of turning on when the first and second input electrical signals exceed a maximum input voltage of a linear region of a transfer function of the first and second differential transistors for increasing the first and second output electrical signals, thereby increasing a linear region of a transfer function of the amplifier stage.

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