Millimeter-wave power amplifier
AssigneeInfineon Technologies AG
InventorsDavid Seebacher, Matteo Bassi, Dmytro Cherniak, Fabio Padovan
Life of this patent
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Abstract
In accordance with an embodiment, a method for operating a millimeter-wave power amplifier including an input transistor having an output node coupled to a load path of a cascode transistor includes: receiving a millimeter-wave transmit signal at a control node of the input transistor; amplifying the millimeter-wave transmit signal to form an output signal; providing the output signal to a load coupled to an output node of the cascode transistor; and adjusting a first DC bias current of the input transistor to form a substantially constant second DC bias current of the cascode transistor.
Claims20
A method for operating a millimeter-wave power amplifier comprising an input transistor having an output node coupled to a load path of a cascode transistor, the method comprising:
- receiving a millimeter-wave transmit signal at a control node of the input transistor;
- amplifying the millimeter-wave transmit signal to form an output signal;
- providing the output signal to a load coupled to an output node of the cascode transistor;
- and
- adjusting a first DC bias current of the input transistor to form a substantially constant second DC bias current of the cascode transistor.
A millimeter-wave power amplifier comprising:
- a cascode transistor having an output node configured to be coupled to a load;
- an input transistor having an output node coupled to a load path of the cascode transistor;
- and
- a bias circuit coupled to the input transistor and the cascode transistor, the bias circuit configured to adjust a first DC bias current of the input transistor to form a substantially constant second DC bias current of the cascode transistor.
A millimeter-wave power amplifier comprising:
- a first signal path comprising a first input transistor, and a first cascode transistor having a first reference node coupled to a first output node of the first input transistor;
- a second signal path comprising a second input transistor, and a second cascode transistor having a second reference node coupled to a second output node of the second input transistor;
- a further cascode transistor configured to receive a reference current at a bias reference node;
- a first amplifier having a first input coupled to the bias reference node and a second input coupled to the first reference node of the first cascode transistor and to the second reference node of the second cascode transistor;
- and
- a first diode connected transistor coupled to an output of the first amplifier and coupled to a first control node of the first input transistor and a second control node of the second input transistor.
Dependencies are inferred from the claim text.