Laird Technologies Gmbh

Torsten Östervall

Anders Thornell-Pers

A multi-band antenna device for a portable radio communication device has first and second radiating elements (). A controllable switch () is arranged between the radiating elements for selectively interconnecting and disconnecting thereof. The state of the switch is controlled by means of a control voltage input (VSwitch). A filter () that blocks radio frequency signals is arranged between the feeding portion and the control voltage input. A DC blocking arrangement () is arranged between a grounding portion () on the first radiating element and ground wherein the first and second radiating element are generally planar and arranged at a predetermined distance above a ground plane. By means of this arrangement, two broad and spaced apart frequency bands are obtained with retained performance and small overall size of the antenna device. A communication device comprising such an antenna device is also provided.

Antenna device and portable radio communication device comprising such an antenna device

A retractable antenna having an elongated radiating element with an upper portion and a lower portion is provided. A slide tube is coupled to the lower portion such that the elongated radiating element is movable with respect to the slide tube. A compressible contact is provided on a bottom portion of the lower portion. The compressible contact is compressed by an inner sidewall of the slide tube at least when the elongated radiating element is in the extended position to facilitate maintaining the elongated radiating element in the extended position and provide an electrical connection between the elongated radiating member and the slide tube.

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Stadigvarande bostad, Sweden

Torsten Östervall