Blackberry Corporation

Research in Motion Corporation

Michael Kühn

Christopher Wehrmann

Shing Lung Steven Yang

Firass Mirza Badaruzzaman

Adrian Piseu Davis

Andreas Handro

A tri-band antenna for noncellular wireless applications is provided. The antenna comprises: a first radiating arm for generating a first resonance in a first frequency band, the first radiating arm further enabled for connection to an antenna tuning circuit; the first radiating arm comprising a capacitive coupling structure; a coupling arm separated by a gap from the first radiating arm; a second radiating arm for generating a second resonance in a second frequency band lower than the first frequency band, the second radiating arm connected to the coupling arm such that the second radiating arm is capacitively coupled to the first radiating arm; and a third radiating arm for generating a third resonance in a third frequency band lower than the second frequency band, the third radiating arm connected to the coupling arm such that the third radiating arm is capacitively coupled to the first radiating arm.

Tri-band antenna for noncellular wireless applications

A mobile communications device having a patch antenna which has defined therein at least two slots each having two or more parts. The at least two slots may include an L-shaped slot and a C-shaped slot, wherein the slots can be open or closed. The L-shaped slot may be an open-slot projecting into the patch antenna from the edge. Ground and signal connections may be at the edge of the patch on either side of the L-shaped slot. The C-shaped slot may be nested within the L-shaped slot.

Multi-slot antenna and mobile device

A mobile communications device is disclosed as having a patch antenna, which has defined therein at least two slots each having two or more parts. The at least two slots may include an L-shaped slot and a C-shaped slot, wherein the slots can be open or closed. The L-shaped slot may be an open-slot projecting into the patch antenna from the edge. Ground and signal connections may be at the edge of the patch on either side of the L-shaped slot. The C-shaped slot may be nested within the L-shaped slot.

Antenna with a C-shaped slot nested within an L-shaped slot and mobile device employing the antenna

A mobile wireless communications device may include a portable housing and wireless transceiver circuitry carried by the portable housing. The mobile wireless communications device may also include an antenna carried by the portable housing and coupled to the wireless transceiver circuitry, and a light source carried by the portable housing. The device may further include a keyboard assembly carried by the portable housing including a light guide coupled to the light source and having input key receiving openings therein, and a mask carried by the light guide and having input key receiving openings. The mask may include spaced apart electrically conductive elongate members positioned relative to the antenna to reduce a Specific Absorption Rate value for the mobile wireless communications device.

Growing community of inventors

Bochum, Germany

Michael Kühn