Siemens Aktiengesellschaft

Hewlett-packard Development Company, L.p.

Palm, Incorporated

Thorsten Kowalski

Stefan Huber

Michael Schreiber

Martin Weinberger

Martin Oelschläger

Wolfgang Glocker

A multiband antenna array for mobile radio equipment that includes a planar pitch antenna having at least two resonances and is provided with a connection to ground and a high-frequency interface and at least two parasitic transmitters which are located marginal to the planar patch antenna and are embodied so as to be free of a high-frequency interface. A particularly compact multiband antenna for several frequency bands is crated as a result of the special arrangement of the planar patch antenna and the parasitic transmitters.

Multiband antenna array for mobile radio equipment

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

Wireless communication device having a reduced sar value

The invention relates to a radio communication device having at least one additional, current-conducting correction element connected to a printed board in the device. The correction element and printed board are configured in such a manner that a targeted, virtual current path elongation is brought about for an electric current induced on the printed board by electromagnetic radio fields of the antenna while the defined longitudinal and traverse dimensions of the printed board remain substantially unchanged.

Radio communication device and printed board having at least one electronically conductive correction element

Growing community of inventors

Munich, Germany

Thorsten Kowalski