Antenna tuner
AssigneeQUALCOMM Incorporated
InventorMuhammad Hassan
Life of this patent
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Abstract
An apparatus includes a power amplifier, a first inductor coupled to the power amplifier, a second inductor magnetically coupled with the first inductor, and an impedance matching circuit having a first terminal and a second terminal, wherein the first terminal is coupled to the second inductor, and the second terminal is coupled to an antenna port. The impedance matching circuit includes a third inductor coupled between the first terminal and the second terminal, wherein the third inductor overlaps the first inductor and the second inductor, and one or more capacitors coupled to the third inductor.
Claims16
An apparatus, comprising:
- a power amplifier;
- a first inductor coupled to the power amplifier;
- a second inductor magnetically coupled with the first inductor;
- an impedance matching circuit having a first terminal and a second terminal, wherein the first terminal is coupled to the second inductor, the second terminal is coupled to an antenna port, and the impedance matching circuit comprises:
- a third inductor coupled in series between the first terminal and the second terminal, wherein the third inductor overlaps the first inductor and the second inductor;
- and
- one or more capacitors coupled to the third inductor.
A method for antenna tuning, comprising:
- magnetically coupling a radio frequency (RF) signal from a first inductor to a second inductor;
- tuning an impedance of an antenna seen at the second inductor using an impedance matching circuit coupled to the second inductor, the impedance matching circuit including a third inductor coupled in series between the second inductor and the antenna and overlapping the first inductor and the second inductor, and one or more capacitors coupled to the third inductor;
- and
- propagating the RF signal through the third inductor of the impedance matching circuit to the antenna.
An apparatus, comprising:
- a power amplifier;
- a first inductor coupled to the power amplifier;
- a second inductor magnetically coupled with the first inductor;
- an impedance matching circuit having a first terminal and a second terminal, wherein the first terminal is coupled to the second inductor, the second terminal is coupled to an antenna port, and the impedance matching circuit comprises:
- a third inductor magnetically coupled to the first inductor and the second inductor and coupled in series between the first terminal and the second terminal;
- and
- one or more capacitors coupled to the third inductor.
Dependencies are inferred from the claim text.