×

Phase shifting applications of universal frequency translation

  • US 7,082,171 B1
  • Filed: 06/09/2000
  • Issued: 07/25/2006
  • Est. Priority Date: 11/24/1999
  • Status: Active Grant
First Claim
Patent Images

1. A method of frequency translating and phase shifting an electromagnetic signal, the method comprising the steps of:

  • (1) receiving an electromagnetic signal;

    (2) generating a control signal having a plurality of pulses that are phase-shifted relative to a reference phase; and

    (3) sampling the electromagnetic signal according to said control signal, resulting in a frequency translated electromagnetic signal that is phase shifted according to said phase shift of said pulses of said control signal;

    wherein said plurality of pulses have pulse widths;

    wherein step (2) comprises the steps of(a) receiving a local oscillator signal;

    (b) leveling shifting said local oscillator signal with a bias voltage, resulting in a biased local oscillator signal; and

    (c) generating a pulse when said biased local oscillator signal exceeds a threshold, whereby said reference phase corresponds to a reference bias voltage, and thereby said phase shift of said pulses of said control signal is determined by a difference between said bias voltage and said reference bias voltage.

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