Blackberry Corporation

Microsoft Technology Licensing, LLC

Nxp Usa, Inc.

Marshall Joseph Katz

Randy Alan Wiessner

Marc Harper

Charbel Khawand

Firass Mirza Badaruzzaman

Ian Peter Lewis

An electronic device provides a detuning monitor circuit configured to detect a change in a voltage standing wave ratio (VSWR) between a radio frequency (RF) transmitter and an RF antenna relative to a predetermined VSWR baseline and a proximity detector circuit configured to adjust transmission power of a carrier wave transmitted from the RF transmitter, if the change fails to satisfy an acceptable VSWR condition. Network proximity detectors are also provided to allow coordination of antenna subsystems to comply with specific absorption rate (SAR) constraints and/or maintain/improve antenna performance.

Detecting proximity using antenna feedback

Methods, systems, apparatuses, and computer program products are provided for detecting objects, including humans, using a mobile communications device. A communication space is scanned with a beam-shaped signal transmitted by a phased antenna array of the mobile communications device. Information is discerned from one or more attenuated signals received from the communication space based on the beam-shaped signal. The information is analyzed to determine an object in the communication space. Whether the object is likely at least a portion of a human is determined. A communication signal transmitted by the phased antenna array is modified in response to determining that the object is likely at least a portion of a human, and that the at least a portion of the human has a predetermined spatial relationship with the phased antenna array.

Multiple antenna communication system configured to detect objects

A method and apparatus for controlling an antenna is provided. A load on a second antenna of a device is determined, the device comprising at least one processor, a first antenna, a variable tuning circuit connected to the first antenna, and the second antenna, wherein the processor determines the load. The processor controls the variable tuning circuit based on the load on the second antenna to change a match of the first antenna.

Method and apparatus for controlling an antenna

A system and process that includes a multiband antenna as may be used in mobile communications devices. The multiband antenna includes a feed port coupled to each of a first radiating portion and a second radiating portion. Each of the first and second radiating portions defines a respective resonant bandwidth. The multiband antenna also includes at least one adjustable tuning circuit disposed between separate and displaced radiating segments of a respective one of the first and second radiating portions. Adjustment of the tuning circuit alters a corresponding resonant bandwidth allowing the corresponding resonant bandwidth to be tuned independently of the other resonant bandwidth and without affecting performance of the other resonant bandwidth. Other embodiments are disclosed.

Antenna tuning for multiband operation

A mobile device including a source for emitting electromagnetic radiation, an enclosure having a side wall, and a detector for detecting electromagnetic radiation emitted by the source is described. At least a portion of the sidewall is adapted to transmit electromagnetic radiation from the source. The source and detector are positioned inside the enclosure. The detector is spaced from the source, and is arranged to detect electromagnetic radiation from the source that is reflected from an object outside the enclosure and passes through the portion of the side wall.

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Palatine, IL, United States of America

Marshall Joseph Katz