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Systems methods circuits and apparatus for calibrating wireless communication systems

  • US 8,837,563 B2
  • Filed: 08/17/2012
  • Issued: 09/16/2014
  • Est. Priority Date: 08/17/2011
  • Status: Active Grant
First Claim
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1. A wireless communication system comprising:

  • one or more antenna elements;

    a first wireless transceiver comprising;

    (a) a modem, and (b) one or more Radio Frequency (RF) chain pairs, wherein at least one RF chain pair includes;

    (i) a receive chain (RX), and (ii) a transmit chain (TX);

    a sounding circuit block comprising;

    (a) a receive chain (RX), (b) a transmit chain (TX); and

    control circuitry adapted to coordinate;

    (1) reception of sounding signals from said first wireless transceiver, and (2) transmission of sounding signals to said first wireless transceiver; and

    a calibrated switchable bridging block (CSBB) switchably coupling signals between said first transceivers and said sounding circuit block, said CSBB comprising;

    a controllable signal switch having known channel characteristics between ports of said switch.

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