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Apple patents power amplifier that adjusts its frequency range

Apple has been granted a patent for a power amplifier design that uses a programmable impedance matching circuit to widen its operating frequency range. The system includes a fixed inductor, a switchable inductor, and a secondary inductor that work together to adjust the center frequency of the signal amplification.

Why it mattersThis hardware improvement could help Apple devices handle a wider variety of wireless signals more efficiently, though it is a specific component-level update rather than a new consumer feature.

In the filing’s own words

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.

What exactly they claim (claim 1)

1. 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.

Facts

Company
Apple (Apple Inc.)
Official title
Power amplifier with programmable bandwidth
Patent number
US12732140B2
Application number
18218478
Filed
Jul 5, 2023
Granted
Sep 8, 2026
Inventors
1
Claims
20

Classified under

H03F 1/565 Electricity & electronicsH03F 3/245 Electricity & electronicsH04B 1/0458 Electricity & electronicsH03F 2200/391 Electricity & electronicsH04B 2001/0408 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.