MULTI-ANTENNA WIRELESS DEVICE WITH POWER COMBINING POWER AMPLIFIERS
First Claim
1. An apparatus comprising:
- a first power amplifier configured to amplify a first input signal and provide a first output signal for a first antenna in a first operating mode; and
a second power amplifier configured to amplify the first input signal or a second input signal and provide a second output signal for a second antenna in the first operating mode,the first and second power amplifiers are power combined in a second operating mode to provide a third output signal.
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Accused Products
Abstract
A wireless device with power combining power amplifiers to support transmission on multiple antennas is disclosed. The power amplifiers may be operated together to obtain higher output power or separately to support transmission on multiple antennas. In an exemplary design, an apparatus includes first and second power amplifiers. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna in a first operating mode (e.g., a MIMO mode or a transmit diversity mode). The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna in the first operating mode. The first and second power amplifiers are power combined in a second operating mode to provide a third output signal, which has a higher maximum output power than the first or second output signal.
27 Citations
20 Claims
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1. An apparatus comprising:
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a first power amplifier configured to amplify a first input signal and provide a first output signal for a first antenna in a first operating mode; and a second power amplifier configured to amplify the first input signal or a second input signal and provide a second output signal for a second antenna in the first operating mode, the first and second power amplifiers are power combined in a second operating mode to provide a third output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of performing signal amplification, comprising:
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amplifying a first input signal with a first power amplifier to obtain a first output signal for a first antenna in a first operating mode; amplifying the first input signal or a second input signal with a second power amplifier to obtain a second output signal for a second antenna in the first operating mode; and amplifying a third input signal with both the first and second power amplifiers to obtain a third output signal for the first antenna in a second operating mode, the first and second power amplifiers being power combined in the second operating mode. - View Dependent Claims (16, 17)
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18. An apparatus comprising:
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first means for amplifying configured to amplify a first input signal and provide a first output signal for a first antenna in a first operating mode; and second means for amplifying configured to amplify the first input signal or a second input signal and provide a second output signal for a second antenna in the first operating mode, the first means for amplifying and the second means for amplifying are power combined in a second operating mode to provide a third output signal. - View Dependent Claims (19, 20)
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Specification