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Backhaul radio with antenna array and multiple RF carrier frequencies

  • US 9,578,643 B2
  • Filed: 07/06/2016
  • Issued: 02/21/2017
  • Est. Priority Date: 08/17/2011
  • Status: Active Grant
First Claim
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1. A backhaul radio for exchanging one or more data interface streams with one or more other backhaul radios, said backhaul radio comprising:

  • a plurality of receive radio frequency (RF) chains, wherein each of the plurality of receive RF chains is configured to convert from a respective one of a plurality of receive RF signals within a receive frequency band to a respective one of a plurality of receive chain output signals;

    a plurality of transmit radio frequency (RF) chains, wherein each of the plurality of transmit RF chains is configured to convert from a respective one of a plurality of transmit chain input signals to a respective one of a plurality of transmit RF signals within a transmit frequency band;

    a plurality of directive gain antenna elements, wherein each of the plurality of directive gain antenna elements is configured to operate over at least both of the transmit frequency band and the receive frequency band; and

    a plurality of duplexer filters, wherein each duplexer filter comprises at least a receive band-select filter configured to selectively pass RF signals within the receive frequency band and a transmit band-select filter configured to selectively pass RF signals within the transmit frequency band, wherein each duplexer filter is couplable or coupled to at least one of the plurality of directive gain antenna elements, wherein the receive band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of receive RF chains, and wherein the transmit band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of transmit RF chains;

    wherein the backhaul radio is configured to operate at least a first subset of the plurality of transmit RF chains at a first transmit RF carrier frequency and to operate at least a second subset of the plurality of transmit RF chains at a second transmit RF carrier frequency; and

    wherein the backhaul radio is further configured to select at least one of the first transmit RF carrier frequency or the second transmit RF carrier frequency in response to at least a current link condition at an at least one of the one or more other backhaul radios.

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