Patent · US Active

SAR measurement for a combined 5G and LTE RF device

US11990928B2 · kind B2 · utility

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0References

7Claims

0Family size

Assignee

Rohde & Schwarz GmbH & Co. KG · DE

Inventors

Benoit Derat · Munich, DE
Michael Herchel · Munich, DE
Christian Dobmeier · Germering, DE

Key dates

Filing date	Aug 17, 2020
Grant date	May 21, 2024
Priority date	—
Expiry date	Mar 23, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG01R29/0892
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a method for measuring the specific absorption rate SAR of a mobile device under test DUT enabled for a combined LTE RF and 5G RF transmission, the method comprising the following steps: a.) Providing a mobile device under test DUT operable in LTE RF and 5G standard, b.) Setting the DUT in a mode to transmit with maximum power level according to the 5G standard, and at the same time transmitting with lower power level of LTE RF standard, c.) Performing a SAR scan and measuring the 5G signal, without taking into account any contribution from the LTE RF signal, d.) Setting the DUT in a mode to transmit with maximum power at maximum power in LTE RF standard, without transmitting according to the 5G standard, e.) Performing a SAR scan and measuring the LTE RF standard signal, f.) Combining the results of step c.) and e.) in order obtain a combined SAR value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.