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US 2014/0176242 A1Published application
Driver amplifier with asymmetrical t-coil matching network
AssigneeQUALCOMM Incorporated
InventorSaihua Lin
Life of this patent
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Abstract
A driver amplifier with asymmetrical T-coil matching network is disclosed. In an exemplary embodiment, an apparatus includes a first inductor configured to receive an input signal at an input terminal and to provide an output signal at an output terminal that is matched to a resistive load. The apparatus also includes a second inductor connected to the first inductor and coupled to the first inductor by a coupling coefficient, the second inductor having a first terminal connected to a supply voltage.
Claims20
An apparatus, comprising:
- a first inductor configured to receive an input signal at an input terminal and to provide an output signal at an output terminal that is matched to a resistive load;
- and
- a second inductor connected to the first inductor and coupled to the first inductor by a coupling coefficient, the second inductor having a first terminal connected to a supply voltage.
An apparatus, comprising:
- means for providing a first inductance configured to receive an input signal at an input terminal and to provide an output signal at an output terminal that is matched to a resistive load;
- and
- means for providing a second inductance connected to the means for providing the first inductance and coupled to the means for providing the first inductance by a coupling coefficient, the means for providing a second inductance having a first terminal connected to a supply voltage.
A method, comprising:
- configuring a matching circuit to match an amplifier to a resistive load;
- performing a first conversion to convert the matching circuit to an inductor equivalent circuit;
- and
- performing a second conversion to convert the inductor equivalent circuit to an asymmetric T-coil comprising first and second inductor portions coupled together by a coupling coefficient, the first inductor portion having an input terminal connected to the amplifier and an output terminal connected to the resistive load, the second inductor portion connected to the first inductor portion and includes a first terminal connected to a supply voltage.
1 more element
Dependencies are inferred from the claim text.