Applications of universal frequency translation

  • US 6,370,371 B1
  • Filed: 03/03/1999
  • Issued: 04/09/2002
  • Est. Priority Date: 10/21/1998
  • Status: Expired due to Term
First Claim
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1. An apparatus, comprising:

  • a universal frequency down-converter (UFD), including a switch, an integrator coupled to said switch, and a pulse generator coupled to said switch; and

    wherein said pulse generator outputs to said switch at an aliasing rate that is determined according to;

    (a frequency of a carrier signal +/−

    a frequency of a lower frequency signal) divided by N;

    wherein said pulses have apertures and said causes switch to close and sub-sample the carrier signal over said apertures, and wherein energy is transferred from the carrier signal and integrated using said integrator during said apertures said pulses, and wherein the lower frequency signal is generated from the transferred energy; and

    means for operating said UFD to perform at least frequency translation operations for at least one of (a)-(l);

    (a) a telephone;

    (b) a communication base station;

    (c) a positioning unit;

    (d) a data communication device;

    (d1) a communication network;

    (e) a pager;

    (f) a security system component;

    (g) a repeater;

    (h) a mobile radio;

    (i) a satellite communication system;

    (j) a command and control unit;

    (k) a radio controlled device; and

    (l) a radio synchronous time piece.

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