Adaptive radio transceiver with a power amplifier
First Claim
1. An amplifier, comprising:
- a plurality of differential pairs coupled together through a common differential output, each differential pair having a current control input; and
a current switch coupled to the current control input of one of the differential pairs to selectively switch said one of the differential pairs in or out of the amplifier.
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Accused Products
Abstract
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
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Citations
95 Claims
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1. An amplifier, comprising:
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a plurality of differential pairs coupled together through a common differential output, each differential pair having a current control input; and
a current switch coupled to the current control input of one of the differential pairs to selectively switch said one of the differential pairs in or out of the amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An amplifier, comprising:
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a plurality of amplifying stages each having first and second transistors, the first and second transistors each having first, second and third nodes, the first nodes of the first transistors being coupled together and the first nodes of the second transistors being coupled together to form a differential output, the second nodes of the first transistors being coupled together and the second nodes of the second transistors being coupled together to form a differential input, and the third node of each of the first transistors being coupled to the third node of its respective second transistor to form a current control input for each of the amplifying stages; and
a current switch coupled to the current control input of one the amplifying stage to switch said one of the amplifying stages in or out of the amplifier. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 62)
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42. An amplifier, comprising:
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a plurality of amplifying stages coupled together, each of the amplifying stages having a current control input; and
a current switch coupled to the current control input of one of the amplifying stages to selectively switch said one of the amplifying stages in or out of the circuit. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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- 63. An amplifier comprising a digitally programmable power level and a matching circuit which is substantially independent of the programmed power level.
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80. An amplifier, comprising:
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a plurality of amplifying stages coupled together;
switching means for switching one of the amplifying stages in or out of the amplifier to program power of the amplifier; and
matching means for matching a load coupled to an output of the amplifier, the matching means being substantially independent of the programmed power. - View Dependent Claims (81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95)
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Specification