×

Vector modulator

  • US 6,531,935 B1
  • Filed: 03/05/2001
  • Issued: 03/11/2003
  • Est. Priority Date: 07/10/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. An analogue phase shifter with vector modulator comprising:

  • an input stage, providing the generation of a pseudo-basis of four vectors and comprising a multiphase filter;

    an output stage, for controlling the amplitude of the basis vectors, and to recombine them;

    the input stage comprising;

    a phase opposition signal generator; and

    a multiphase filter;

    the input stage comprising;

    four variable attenuators for separate control of the amplitude of each of the basis vectors;

    a common output providing the summation of four quadrature channels; and

    wherein the output stage includes two differential amplifiers isolating the variable attenuators from the malliphase filter.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×