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Carrier aggregation using multiple antennas

  • US 9,935,670 B2
  • Filed: 09/26/2014
  • Issued: 04/03/2018
  • Est. Priority Date: 09/26/2013
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • Radio frequency (RF) switching and duplexing circuitry configured to;

    operate in one of a plurality of RF transmit modes, such that the plurality of RF transmit modes comprises at least one transmit uplink carrier aggregation mode;

    during the at least one transmit uplink carrier aggregation mode, provide transmit uplink carrier aggregation by simultaneously providing at least two RF transmit signals comprising a highband RF antenna transmit signal and a lowband RF antenna transmit signal, wherein a frequency of the highband RF antenna transmit signal is higher than a frequency of the lowband RF antenna transmit signal;

    operate in one of a plurality of RF receive modes, wherein the plurality of RF receive modes comprises a plurality of receive downlink carrier aggregation modes, wherein the plurality of receive downlink carrier aggregation modes comprises a dual antenna first RF diplexer receive mode, such that during the dual antenna first RF diplexer receive mode, the RF switching and duplexing circuitry is further configured to;

    receive a highband RF antenna receive signal from the primary RF antenna via the first RF diplexer; and

    receive a lowband RF antenna receive signal from the auxiliary RF antenna via the second RF diplexer;

    a first RF diplexer coupled between the RF switching and duplexing circuitry and a primary RF antenna; and

    a second RF diplexer coupled between the RF switching and duplexing circuitry and an auxiliary RF antenna, wherein RF front-end circuitry comprises the RF switching and duplexing circuitry, the first RF diplexer, and the second RF diplexer.

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