Research in Motion Corporation

Blackberry Corporation

Robert Grant

Perry Jarmuszewski

Lizhong Zhu

Michael Corrigan

Liviu George

Michael Stephen Corrigan

Robert J Grant

George Soliman Mankaruse

Marc A Drader

James Alexander Robinson

Steve Green

Tim Sommerfeld

Simon Andrew Hughes

Christopher Robert Little

Tajinder Manku

A mobile wireless communications device includes a housing and circuit board carried by the housing and includes radio frequency (RF) circuitry and a processor carried by the circuit board and operative with each other. A display connector for an LCD connector is mounted on the circuit board and adapted to be connected to a display. Display connection lines are carried by the circuit board and interconnect the display connector and processor for carrying signals from the processor to the display connector and a connected display. Filters are carried by the circuit board and connected to the display connection lines and reduce any interfering energy from the processor and display.

Mobile wireless communications device with reduced interfering energy from the display and related methods

A mobile wireless communications device may include an antenna, LTE RF differential inputs, and a front end circuit. The front end circuit may include band pass filters coupled to the antenna, LNAs coupled respectively to the band pass filters, and RF switching circuits. Each RF switching circuit may be respectively coupled between each LNA and a pair of LTE RF differential inputs and configured to switch to one or both of the pair of LTE RF differential inputs.

Mobile wireless communications device with LNA front end circuit and related methods

A mobile wireless communications device may include an antenna, primary RF receivers configured to operate at different RF bands, each primary RF receiver having a differential input, and secondary RF receivers also configured to operate at the different RF bands, each secondary RF receiver having a differential input. The mobile wireless communications device may also include first and second RF filters coupled to the antenna and configured to respectively pass first and second RF bands from among the different RF bands, and a first DDPDT RF switch coupled between the first and second RF filters and the differential inputs of respective first ones of the primary and secondary RF receivers.

Mobile wireless communications device with DDPDT RF switch and related methods

A mobile wireless communications device includes a housing and circuit board carried by the housing and having RF circuitry comprising at least one RF component and plurality of other components mounted on the circuit board. An RF metal shield is secured to the circuit board and surrounds and isolates the at least one RF component and plurality of other components within the RF metal shield. An RF absorber is positioned adjacent an area of the RF component that radiates energy to aid in reducing energy radiated from the RF component into the RF metal shield.

Mobile wireless communications device with reduced interfering RF energy into RF metal shield secured on circuit board

A fixture for radio frequency ('RF') testing of an assembled wireless device, the wireless device having a removable casing concealing one or more RF spring connectors, the fixture comprising: a retainer for receiving the wireless device with the removable casing removed; a coaxial connector mounted through the retainer, the coaxial connector having a center contact and a shield contact, the coaxial connector for communicating RF test signals through a coaxial cable with external test equipment; a circuit board mounted on an inner side of the retainer and having one or more pads each for receiving one of the center and shield contacts; and, one or more probes mounted on ones of the pads for contacting ones of the RF spring connectors to distribute the RF test signals.

Test fixture for assembled wireless devices

Growing community of inventors

Mississauga, Canada

Liviu George