Amplifier Circuit Having a Coil Structure with Mutually Inductively Coupled Coils
AssigneeInfineon Technologies AG
InventorChristian Musolff
Life of this patent
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Abstract
An amplifier circuit includes a first amplifier, a second amplifier, an output connection, and a coil structure. The output connection connects outputs of the first amplifier and second amplifier with a load node. The coil structure includes a first coil and a second coil that are mutually inductively coupled with one another. A first DC voltage feeds the first amplifier through the first coil. A second DC voltage feeds the second amplifier. The output of the first amplifier is connected to the load node through the second coil.
Claims20
An amplifier circuit, comprising:
- a first amplifier;
- a second amplifier;
- an output connection that connects outputs of the first amplifier and second amplifier with a load node;
- and
- a coil structure comprising a first coil and a second coil that are mutually inductively coupled with one another,
- wherein a first DC voltage feeds the first amplifier through the first coil,
- wherein a second DC voltage feeds the second amplifier, and
- wherein the output of the first amplifier is connected to the load node through the second coil.
An amplifier circuit, comprising:
- A Doherty Amplifier circuit comprising a main amplifier device, a peak amplifier device, a first DC voltage feeding the main amplifier device through a first inductance, a second DC voltage feeding the peak amplifier device, and an impedance inverter circuit connected between outputs of the main amplifier device and the peak amplifier device and comprising a second inductance,
- wherein the Doherty Amplifier circuit is monolithically formed in a semiconductor chip,
- wherein the first inductance and the second inductance are mutually inductively coupled with one another.
An amplifier circuit, comprising:
- a first amplifier, a second amplifier, an output connection, and a coil structure that is monolithically formed in a semiconductor chip,
- wherein the output connection connects outputs of the first amplifier and second amplifier with a load node;
- wherein the coil structure comprises a first coil and a second coil that are mutually inductively coupled with one another,
- wherein a first DC voltage feeds the first amplifier through the first coil,
- wherein a second DC voltage feeds the second amplifier, and
- wherein the outputs of the first amplifier and second amplifier are connected through the second coil.
Dependencies are inferred from the claim text.