Patent · US Expired

Wireless communication device having a reduced sar value

US7804451B2 · kind B2 · utility

12Cited by

5References

37Claims

0Family size

Assignee

PALM FIRM CORPORATION · US

Inventors

Wolfgang Glocker · Memmingen, DE
Stefan Huber · Traunwalchen, DE
Thorsten Kowalski · Birkenfeld, DE
Martin Oelschlager · Berlin, DE
Michael Schreiber · Frankfurt, DE
Martin Weinberger · Maria Saal, AT

Key dates

Filing date	Sep 11, 2003
Grant date	Sep 28, 2010
Priority date	—
Expiry date	Sep 11, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH01Q19/005
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

In order to reduce the SAR value in a wireless communication device (MP), an additional, current-conducting corrective element (CE1) is coupled to and configured in relation to the printed circuit board (LP) and the antenna (AT1) such that the amplitude level (IM1, NIM1) and/or the phase angle of electrical currents (I3, I1, I2) on the antenna (AT1), the printed circuit board (LP), and the corrective element (CE1) are adjusted relative to each other in such a way that the SAR distribution resulting from such currents becomes minimal.

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