Allgon Ab

Hans Peter Kurz

Olov Edvardsson

Christian Braun

Leif Eriksson

Howard William Johnson, Ii

Howard William Johnson

An antenna device for transmitting and receiving RF waves in at least a first frequency band and adapted to be arranged in a radio communication device. The antenna device comprises a support structure ( ), at least one radiating antenna portion ( ) carried by the support structure, a circuit carried by the support structure for processing analogue RF signals tapped from or fed to the radiating antenna portion, and coupling means arranged for connecting the circuit to the radio communication device. A radiation shielding device ( ) of an electrically conductive material surrounds the circuit at least partially, and the shielding device ( ) is functionally integrated with the radiating antenna portion ( ) and forms an actively radiating part thereof.

Antenna device and a radio communication device including an antenna device

Extendable ground arrangement for an antenna system in a radio communication device to be operating at within one or more frequency bands. The ground arrangement includes support means ( ), e.g., a slide or flap, carrying conductive ground extension means ( ). The support means has fastening means ( ) for slidably or rotatably connecting the ground extension means to the radio communication device, wherein the ground extension means is adapted to radiate at at least said first frequency and to couple, e.g., capacitively, to main ground means located in the radio communication device adjacent to said first edge. When extended the extendable ground means provides improved gain and SAR reduction.

Ground extension arrangement for coupling to ground means in an antenna system, and an antenna system and a mobile radio device having such ground arrangement

Compact antenna means for portable radio communication devices and

Growing community of inventors

Solna, Sweden

Hans Peter Kurz