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Sony patents measurement device that fixes signal errors in radio tests

Sony describes a device for measuring radio signals that uses a shared circuit to create both the signal being sent and the reference signal for receiving it. It includes a switch that turns on a correction tool to fix small imbalances in these signals, which helps make the measurements more accurate.

Why it mattersThis improves the precision of lab equipment used to test wireless technology, ensuring that engineers get reliable data when developing new radio components.

In the filing’s own words

The present disclosure relates to a measurement device capable of taking measurements more accurately. A measurement device is provided, the measurement device including: a PLL circuit used in common to generate both a transmission RF signal and a reception LO signal that are high-frequency signals at different frequencies; an IQ correction unit that corrects IQ error in an LO signal used to generate at least one of the transmission RF signal or the reception LO signal; and a switching unit that switches between an on state in which correction by the IQ correction unit is performed and an off state in which the correction is not performed. The present disclosure can be applied in a vector network analyzer, for example.

What exactly they claim (claim 1)

1. A measurement device comprising: a Phase Locked Loop (PLL) circuit used in common to generate both a transmission Radio Frequency (RF) signal and a reception Local Oscillator (LO) signal that are high-frequency signals at different frequencies; an IQ correction unit that corrects IQ error in an LO signal used to generate at least one of the transmission RF signal or the reception LO signal; and a switching unit that switches between an on state in which correction by the IQ correction unit is performed and an off state in which the correction is not performed.

Facts

Company
Sony (SONY SEMICONDUCTOR SOLUTIONS CORPORATION)
Official title
MEASUREMENT DEVICE
Publication number
US20260266901A1
Application number
18848640
Filed
Mar 28, 2022
Published
Sep 10, 2026
Inventors
2
Claims
11

Classified under

G01R 31/31705 Physics & computing
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.