Siemens Aktiengesellschaft

Qualcomm Incorporated

Hewlett-Packard Development Company, L.p.

Palm, Incorporated

Michael Schreiber

Stefan Huber

Martin Weinberger

Martin Oelschläger

Thorsten Kowalski

Gerd Kohler

Wolfgang Glocker

A multiple resonant antenna unit (AT) comprises a current feed area (SPI) from which only a single, spiral-like antenna branch (AZI) emanates. The total course of this spiral-like antenna branch (AZI) forms a first resonant antenna structure for a low frequency range and at least one partial section (SE) inside the total course of this spiral-like antenna structure (AZI) forms a second resonant antenna structure for a higher frequency range.

Multiple resonant antenna unit, associated printed circuit board and radio communication

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

An antenna for the communication terminal having a printed conductor pattern applied to a support, wherein the printed conductor pattern includes a first printed conductor pattern section, the end of which is capacitively loaded by a second printed conductor pattern section for tuning the antenna to a desired radio channel.

Antenna for a communication terminal

A method for assembling and installing an antenna, for mobile radios, which is formed by wire in a winding or twisting process and includes a helical part and a contact-making part, wherein the helical part being housed in a housing and secured in place via first snap-action hooks, the spring characteristics of the contact-making part allow advantageous contact-making capabilities during installation and fixing to a mobile radio housing, and the housing being secured within a mobile radio housing via second snap-action hooks.

Methods for assembling and installing an antenna

A tunable antenna includes separate radiator parts coupled to one another. The coupling between the parts is changed by rotating and/or displacing the parts with respect to one another such that the antenna exhibits a radiation pattern associated with a respective degree of a rotation and/or displacement. A process for manufacturing such antennas includes constructing parts for a respective antenna, coupling the parts to one another to permit them to rotate and/or displace, measuring the radiation pattern of the parts, and adjusting the radiation pattern by rotating and/or displacing the parts with respect to one another to set a nominal radiation pattern of the respective antenna formed by the parts. The couple is changed by rotation and/or displacement of the parts. A respective degree of rotation and/or displacement creates a corresponding change of a radiation pattern of the parts.

Growing community of inventors

Aying-Göggenhofen, Germany

Michael Schreiber