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Adaptive mode optimizer and mode shifter

  • US 9,112,589 B2
  • Filed: 02/26/2013
  • Issued: 08/18/2015
  • Est. Priority Date: 02/26/2013
  • Status: Active Grant
First Claim
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1. A mode shifter circuit connectable to an external radio frequency (RF) transceiver for frequency band conversion, the circuit comprising:

  • an input port configured to receive a radio frequency (RF) signal from an antenna port of the external radio frequency (RF) transceiver;

    a signal switch;

    a port signal analyzer configured to perform operations comprising;

    determining whether a power measurement at the input port exceeds a threshold; and

    issuing a transmit command signal to the signal switch to connect the input port to a transmit path when the power measurement exceeds the threshold;

    a transmit signal processor configured to perform operations comprising;

    shifting the RF signal to a shifted signal band, wherein the shifted signal band is lower or higher that a native radio frequency band of the external transceiver; and

    communicating the shifted RF signal to at least one antenna of a plurality of antennas for transmission, wherein the transmit signal processor is included in the transmit path, wherein the plurality of antennas is configured to form a phased array; and

    an antenna selection processor configured to perform operations comprising;

    determining and assigning a weight function to each of the plurality of antennas.

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