Patent ID: 6954180

Claim:
An antenna device provided for transmitting and/or receiving RF radiation, installable in and connectable to a portable radio communication terminal device, and comprising: an antenna structure comprising a plurality of antenna elements capable of being connected to and disconnected from each other, said antenna structure being switchable between a plurality of predefined antenna configuration states, in each of which multiple ones of said plurality of antenna elements are connected to each other, and each of which being distinguished by a set of radiation parameters; and a switching device provided for selectively switching said antenna structure between said plurality of predefined antenna configuration states, wherein each of said plurality of predefined antenna configuration states is optimized for operation of the antenna device in said portable radio communication terminal device in a respective predefined physical operation environment external to said portable radio communication terminal device, wherein said plurality of predefined antenna configuration states includes at least three antenna-configuration states, and said switching device is provided for receiving a measure indicating a change from a first one to a second one of said predefined physical operation environments and for switching said antenna structure from a first one to a second one of said plurality of predefined antenna configuration states, in dependence on said received measure, wherein said first predefined antenna configuration state is optimized for use of said antenna device in said portable radio communication terminal device in said first predefined physical operation environment, and said second predetermined antenna configuration state is optimized for use of said antenna device in said portable radio communication terminal device in said second predefined physical operation environment.