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Reconfigurable carrier aggregation FECC with switched filters and programmable band switching LNA

  • US 10,326,484 B1
  • Filed: 06/06/2018
  • Issued: 06/18/2019
  • Est. Priority Date: 06/06/2018
  • Status: Active Grant
First Claim
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1. A front end circuit configuration (FECC) configured to receive input signals, some of which are Carrier Aggregated (CA) signals, each CA signal supporting aggregation of at least two, and a maximum number N, supported frequency ranges selected from a set of supported frequency ranges that is greater than N, the FECC including:

  • (a) a plurality of Low Noise Amplifiers (LNAs) used for amplifying the CA signals, each LNA having an operating frequency range that includes at least one from among the set of supported frequency ranges, the number of LNAs used for amplifying CA signals being equal to N, each of the supported frequency ranges of the set of supported frequency ranges being within the operating range of at least one LNA; and

    (b) a plurality of LNA switches, each LNA switch having a plurality of inputs, each input configured to receive at least a portion of the received input signal, the at least a portion of the received input signal having a frequency within at least one of the supported frequency ranges, the inputs of at least two different LNA switches from among the plurality of LNA switches receiving the same at least a portion of the received input signal and each LNA switch having an output coupled to a corresponding one of the plurality of LNAs such that there is a one to one relationship between the LNAs and LNA switches.

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