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US 12,732,140 B2Granted
Power amplifier with programmable bandwidth
AssigneeApple Inc.
InventorAhmed G Radwan
Life of this patent
Estimating the term…
Abstract
This disclosure is directed to a power amplifier including a programmable impedance matching circuit. The programmable impedance matching circuit may include a programmable primary inductor and a secondary inductor. The programmable primary inductor may adjust a center frequency (e.g., resonant frequency) for providing amplified signals by the power amplifier to improve (e.g., expand) a frequency bandwidth of the power amplifier. As such, the power amplifier may have improved frequency bandwidth compared to other power amplifiers.
Claims20
A power amplifier comprising:
- a first branch comprising a first capacitor;
- a second branch comprising a second capacitor;
- and
- an impedance matching circuit comprising
- a fixed inductor coupled to the first branch and the second branch,
- a switching circuit coupled to the fixed inductor, the switching circuit comprising a plurality of switches,
- a switchable inductor coupled to the switching circuit, and
- a secondary inductor configured to inductively couple to the fixed inductor and the switchable inductor.
5 more elements
A power amplifier comprising:
- a first branch and a second branch configured to generate an analog signal based on receiving outgoing data;
- and
- an impedance matching circuit configured to generate an amplified signal based on the analog signal comprising
- a fixed inductor coupled to the first branch and the second branch,
- a switchable inductor,
- a switching circuit configured to
- couple the switchable inductor to the fixed inductor to generate current having a same direction as current of the fixed inductor,
- couple the switchable inductor to the fixed inductor to generate current having an opposite direction as the current of the fixed inductor, and
- uncouple the switchable inductor from the fixed inductor, and a secondary inductor configured to output the amplified signal.
6 more elements
A method comprising:
- receiving, by a processor, an indication of a frequency of a signal;
- coupling, by the processor, a switchable inductor of a programmable primary inductor of an impedance matching circuit in parallel to a fixed inductor of the programmable primary inductor to generate a first current in the switchable inductor in an opposite direction as a second current of the fixed inductor in response to determining that the frequency is above a first threshold, wherein a power amplifier comprises the impedance matching circuit;
- coupling, by the processor, the switchable inductor to the fixed inductor to generate the first current in the switchable inductor in a same direction as the second current of the fixed inductor in response to determining that the frequency is above a second threshold;
- uncoupling, by the processor, the switchable inductor from the fixed inductor;
- and
- outputting, by the processor, the signal with the frequency to the power amplifier comprising the impedance matching circuit to generate an amplified signal based on the signal.
3 more elements
Dependencies are inferred from the claim text.