Power control for a dual mode transmitter
First Claim
1. A circuit comprising:
- an amplifier configured to provide amplification of a signal for transmission in either a first transmission mode or a second transmission mode, using power supplied from a power supply, the amplifier including at least one cascode transistor in series with at least one amplifying transistor; and
a power controller configured to define an operating characteristic of the at least one cascode transistor, and thereby designate an amount of power from the power supply that is used by the amplifier during the amplification, based on whether the amplifier is to be operated in the first transmission mode or the second transmission mode.
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Accused Products
Abstract
A circuit may be provided. The circuit may be a component of a dual mode transmitter such as a transmitter from the 802.11x family. The circuit may comprise an amplifier configured to provide amplification of a signal for transmission in either a first transmission mode or a second transmission mode, using power supplied from a power supply, the amplifier including at least one cascode transistor in series with at least one amplifying transistor. The circuit may further comprise a power controller configured to define an operating characteristic of the at least one cascode transistor, and thereby designate an amount of the power from the power supply that is used by the amplifier during the amplification, based on whether the amplifier is to be operated in the first transmission mode or the second transmission mode.
93 Citations
20 Claims
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1. A circuit comprising:
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an amplifier configured to provide amplification of a signal for transmission in either a first transmission mode or a second transmission mode, using power supplied from a power supply, the amplifier including at least one cascode transistor in series with at least one amplifying transistor; and a power controller configured to define an operating characteristic of the at least one cascode transistor, and thereby designate an amount of power from the power supply that is used by the amplifier during the amplification, based on whether the amplifier is to be operated in the first transmission mode or the second transmission mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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providing an amplifier within a multi-mode transmitter, the amplifier powered by a power supply and including at least one cascode transistor in series with at least one amplifying transistor; providing a first power control option defining an amount of power used by the amplifier in an operational mode of the transmitter and associated with a first operating characteristic of the at least one cascode transistor; and providing a second power control option defining an amount of power used by the amplifier in the operational mode of the transmitter and associated with a second operating characteristic of the at least one cascode transistor. - View Dependent Claims (14, 15, 16)
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17. A method comprising:
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making a determination to operate a transmitter in a first operational mode or a second operational mode, the first operational mode requiring less power for operation of an amplifier of the transmitter than the second operational mode; setting a bias level of a plurality of cascode transistors of the amplifier, based on the determination; setting a voltage level of a power supply of the amplifier, based on the determination; and designating a number of the plurality of cascode transistors to be active within the amplifier, based on the determination. - View Dependent Claims (18, 19, 20)
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Specification