Radio frequency front end circuitry for uplink carrier aggregation
AssigneeQorvo US, Inc.
InventorsNadim Khlat, Marcus Granger-Jones
Life of this patent
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Abstract
Radio frequency (RF) front end circuitry includes primary communications circuitry and secondary communications circuitry. The primary communications circuitry is configured to provide primary RF transmit signals and receive primary RF receive signals. The secondary communications circuitry is configured to provide primary RF transmit signals during certain uplink carrier aggregation configurations to provide antenna-to-antenna isolation between primary RF transmit signals and thus reduce intermodulation between signals in problematic operating band combinations.
Claims20
Radio frequency (RF) front end circuitry comprising:
- primary communications circuitry coupled to a primary antenna node and configured to:
- receive and process primary RF receive signals within a first operating band and primary RF receive signals within a second operating band from the primary antenna node;
- and
- provide primary RF transmit signals within the second operating band to the primary antenna node;
- secondary communications circuitry coupled to a secondary antenna node and configured to:
- receive and process secondary RF receive signals within the first operating band and secondary RF receive signals within the second operating band from the secondary antenna node;
- and
- provide primary RF transmit signals within the first operating band to the secondary antenna node;
- and
- antenna swapping circuitry coupled to the primary antenna node and the secondary antenna node and configured to selectively couple the primary antenna node to one of a primary antenna and a secondary antenna and couple the secondary antenna node to a different one of the primary antenna and the secondary antenna.
Radio frequency (RF) front end circuitry comprising:
- a primary antenna node and a secondary antenna node;
- primary communications circuitry coupled to the primary antenna node and configured to:
- receive and process primary RF receive signals within a first operating band and primary RF receive signals within a second operating band from the primary antenna node;
- and
- provide primary RF transmit signals within the second operating band to the primary antenna node;
- secondary communications circuitry coupled to the secondary antenna node and configured to:
- receive and process secondary RF receive signals within the first operating band and secondary RF receive signals within the second operating band from the secondary antenna node;
- and
- provide primary RF transmit signals within the first operating band to the secondary antenna node;
- antenna swapping circuitry coupled to the primary antenna node and the secondary antenna node and configured to selectively couple the primary antenna node to one of a primary antenna and a secondary antenna and couple the secondary antenna node to a different one of the primary antenna and the secondary antenna;
- and
- control circuitry coupled to the primary communications circuitry, the secondary communications circuitry, and the antenna swapping circuitry, the control circuitry configured to cause the RF front end circuitry to simultaneously provide the primary RF transmit signals within the first operating band from the secondary communications circuitry to the secondary antenna node and provide the primary RF transmit signals within the second operating band from the primary communications circuitry to the primary antenna node in an uplink carrier aggregation mode of operation.
Dependencies are inferred from the claim text.