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Sony patents circuit board design that separates wireless antennas with a cut

Patent drawing
Patent drawing from the official filing.

Sony describes an electronic device with two wireless antennas placed on a flat circuit board. The design uses a specific cut in the metal ground layer to separate the antennas and prevent them from interfering with each other.

Why it mattersThis is a technical improvement to how wireless signals are managed inside devices, which helps ensure stable connections in compact gadgets.

In the filing’s own words

Provided is an electronic device including a substrate ( 10), a first antenna ( 20) and a second antenna ( 30) formed on the substrate ( 10) and each configured to perform wireless communication, a ground pattern ( 11) formed by a single conductor layer of the substrate ( 10), and a slit ( 40) formed by cutting out the conductor layer, with a base point that is a point on an outer periphery of the ground pattern ( 11), in which the first antenna ( 20) is disposed within a first antenna region ( 21) surrounded by an outer periphery of the substrate ( 10) and the conductor layer in plan view, the second antenna ( 30) is disposed within a second antenna region ( 31) surrounded by the outer periphery of the substrate ( 10) and the conductor layer in plan view, the base point of the slit ( 40) is located between the first antenna region ( 21) and the second antenna region ( 31) in plan view, and the slit ( 40) has a portion opposing an end portion on a side opposite to a side of the outer periphery of the substrate ( 10) of the first antenna region ( 21) in plan view.

What exactly they claim (claim 1)

1. An electronic device comprising: a substrate; a first antenna and a second antenna formed on the substrate and each configured to perform wireless communication; a ground pattern formed by a single conductor layer of the substrate; and a slit formed by cutting out the conductor layer, with a base point that is a point on an outer periphery of the ground pattern, wherein the first antenna is disposed within a first antenna region surrounded by an outer periphery of the substrate and the conductor layer in a plan view, the second antenna is disposed within a second antenna region surrounded by the outer periphery of the substrate and the conductor layer in the plan view, the base point of the slit is located between the first antenna region and the second antenna region in the plan view, and the slit has a portion opposing an end portion on a side opposite to a side of the outer periphery of the substrate of the first antenna region in the plan view.

Facts

Company
Sony (Sony Interactive Entertainment Inc.)
Official title
ELECTRONIC DEVICE
Publication number
US20260302609A1
Application number
19475640
Filed
Apr 21, 2023
Published
Oct 1, 2026
Inventors
3
Claims
20

Classified under

H01Q 1/528 Electricity & electronicsH01Q 1/48 Electricity & electronicsH01Q 1/521 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.