Research in Motion Corporation

Blackberry Corporation

Reseach in Motion Limited

Nxp Usa, Inc.

Robert Grant

Perry Jarmuszewski

Ying Tong Man

Yihong Qi

Lizhong Zhu

Michael Corrigan

Jun Xu

George Mankaruse

Kent Nickerson

Krystyna Bandurska

Liviu George

Michael Stephen Corrigan

George Soliman Mankaruse

Kent Arnold Nickerson

Robert J Grant

Nagula Tharma Sangary

Marc A Drader

James Alexander Robinson

Oleksiy Kravets

Libo Zhu

Brynn King

Mingchang Wang

Chengzhi Wang

Fei He

Craig Stuart Mackenzie

Rafaele Pini

Koon Hung Lee

Jun Jun Xu

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 a housing, a wireless receiver carried by the housing and configured to receive communication signals over a wireless frequency range, a wireline transmitter carried by the housing and configured to transmit communication signals overlapping in frequency with the wireless frequency range, and a controller carried by the housing and coupled with the wireless receiver and the wireline transmitter. The controller may be configured to determine when the wireless receiver is to begin receiving and, based thereon, switch the wireline transmitter to a suspended communication mode during which transmission is disabled. The controller may also be configured to determine when the wireless receiver has completed receiving and, based thereon, switch the wireline transmitter to a normal communication mode in which transmission is enabled.

Mobile wireless communications device providing enhanced interference mitigation from wireline transmitter and related methods

A mobile wireless communications device includes a housing an antenna, and radio frequency (RF) circuitry. A transceiver is connected to the antenna and a processor is operative with the RF circuitry. The transceiver includes an In-phase and Quadrature (I/Q) Modulation and Power Amplification circuit having an In-phase (I) circuit with a modulator mixer and power amplifier circuit. A Quadrature (Q) circuit includes a modulator mixer and power amplifier circuit. A power combiner receives the separately amplified In-phase and Quadrature signals and sums and outputs the signals as a combined I and Q signal. The I and Q circuits are isolated from the combined I and Q signal to enhance antenna matching and transmitted radiated power (TRP) and reduce harmonic emission from the power amplification circuits.

Mobile wireless communications device with separate in-phase and quadrature power amplification

A mobile wireless communications device may include a housing, a wireless receiver carried by the housing and configured to receive communication signals over a wireless frequency range, a wireline transmitter carried by the housing and configured to transmit communication signals at a frequency overlapping the wireless frequency range, and a controller carried by the housing and coupled with the wireless receiver and the wireline transmitter. The controller may be configured to determine when the wireless receiver is to begin receiving and, based thereon, switch the wireline transmitter to a suspended communication mode during which transmission is disabled. The controller may also be configured to determine when the wireless receiver has completed receiving and, based thereon, switch the wireline transmitter to a normal communication mode in which transmission is enabled.

A mobile electronic device is provided. In one aspect, the mobile electronic device comprises a chassis including a ground plane; a processor carried by the chassis; a frequency tunable antenna carried by the chassis and fed by an inductor; a communications interface carried by the chassis and operative with the processor for receiving and transmitting RF signals via the frequency tunable antenna; audio circuitry carried by the chassis and operative with the communications interface and processor; an audio transducer having a coil in proximity to the frequency tunable antenna for at least one of receiving and transmitting audio signals from and to the audio circuitry; and at least one RF choke configured for blocking RF energy from the frequency tunable antenna through the audio transducer to the ground plane and decoupling the antenna from the audio transducer to minimize any detuning of antenna impedance match and degradation in antenna gain. At least one tunable capacitor is connected in parallel with at least one of the audio transducer coil, the RF choke and the inductor, for providing dynamic RF energy blocking over an operating frequency range of the frequency tunable antenna.

Mobile wireless communications device with improved broadband antenna impedance matching

In accordance with a non-limiting aspect, a mobile wireless communications device includes a housing, at least one circuit board carried by the housing, radio frequency (RF) circuitry, and a processor. An antenna is operative with the RF circuitry. A charging circuit charges a battery carried by and powers the device and includes at least one charging contact carried by the housing and configured for engaging an external charging cradle when connected thereto. It includes an internal connector extending to at least one circuit board and connecting to the charging circuitry. An RF filter includes a ferrite material surrounding at least a portion of the internal connector to minimize RE coupling from the at least one charging contact to the antenna and reduce transmitter harmonics emission and receiver de-sense.

Mobile wireless communications device with RF immune charging contacts

A mobile wireless communications device may include a portable device housing, wireless communications circuitry carried by the portable device housing, and a self-contained rechargeable battery pack carried by the portable housing for powering the wireless communications circuitry. The self-contained rechargeable battery pack may include a battery casing, at least one internal battery cell carried within the battery casing, internal battery circuitry carried within the battery casing, and at least one internal filter element carried within the battery casing and coupled to the internal battery circuitry.

Mobile wireless communications device including a self-contained rechargeable battery pack with filter and related methods

A mobile wireless communications device includes a housing, antenna, and circuit board carried by the housing and having radio frequency (RF) circuitry operative with the antenna for receiving and transmitting RF signals through the antenna. A power amplifier is connected within a transmission line for amplifying RF signals to be transmitted over the transmission line to the antenna. An antenna switch is connected to the antenna and RF circuitry. An RF shield surrounds the power amplifier and antenna switch and isolates the power amplifier and antenna switch from the antenna and RF circuitry. A low pass filter is connected to the power amplifier and antenna switch for reducing any RF coupling of voltage standing waves of upper harmonic frequencies from the power amplifier into the antenna switch through the RF shield while maintaining transmission of signals through the transmission line at a desired fundamental frequency.

Mobile wireless communications device with reduced harmonics resulting from metal shield coupling

A mobile wireless communications device includes a housing and circuit board in the housing and having radio frequency (RF) circuitry and a power amplifier and microphone mounted thereon. An antenna is carried within the housing and operative with the RF circuitry. An RF shield surrounds and isolates the microphone from the RF circuitry, power amplifier and antenna and shields the microphone from radiated energy generated from the RF circuitry, antenna or power amplifier.

Mobile wireless communications device with reduced microphone noise from radio frequency communications circuitry

A mobile wireless communications device includes a housing and circuit board carried by the housing. RF circuitry and a processor are operative with each other and carried by the circuit board. A receiver speaker and microphone are carried by the housing. Audio circuitry is carried by the circuit board and operative with the RF circuitry and processor. A microphone audio switch and receiver speaker audio switch are carried by the circuit board and are connected with audio connection lines that interconnect the processor. A filter is operative with the audio connection lines and operatively connected to at least one of the microphone audio switch or receiver speaker audio switch to reduce conducted and radiated interfering RF energy from coupling into the audio circuitry.

Mobile wireless communications device with reduced interfering energy into audio circuit and related methods

A power distribution network includes multiple charge storage components and multiple charging circuits to control the charging and discharging of the charge storage components, which may comprise a battery and a supercapacitor. By appropriate arrangement and selection of the storage components, ripple in the power supply voltage, whose propagation to other components relying on the power distribution network may cause an audible buzz, may be significantly reduced. Additionally, appropriate arrangement and selection of the storage components, electromagnetic interference may also be significantly reduced.

Power distribution network based on multiple charge storage components

A communications device, in one aspect as a portable wireless communications device, includes an in-phase modulator and power amplifier that receives a baseband I signal and modulates and amplifies the I signal. A quadrature modulator and power amplifier receives a baseband Q signal and modulates and amplifies the Q signal. A power combiner sums and outputs the I and Q signals. An I demodulator circuit receives a signal fed back from the I power amplifier and demodulates the fed back signal to produce demodulated I signals. A Q demodulator circuit receives a signal fed back from the Q power amplifier and demodulates the fed back signal to produce demodulated Q signals. A processor compares the digital, baseband I and Q signals with a demodulated I and Q signals to compensate for amplitude, frequency and phase modulation errors.

Mobile wireless communications device with separate in-phase (I) and quadrature (Q) phase power amplification and power amplifier pre-distortion and IQ balance compensation

The disclosure relates to an electronic circuit for reducing leakage of radio frequency signals from a power amplifier of a wireless communication device is provided. The circuit comprises: a printed circuit board (PCB) having the power amplifier mounted on the PCB; a first electrical track in the PCB providing part of a connection from a low band power input terminal of the power amplifier to a battery terminal; a first capacitor connected to the first electrical track, the low band power input terminal and a ground reference in the PCB; a second capacitor connected in parallel to the first capacitor and connected to the first electrical track, the low band power input terminal and the ground reference; a first high filter choke having a first end connected to the first electrical track and a second end connected to the battery terminal; a second electrical track connected to a low band power input terminal of the power amplifier; and a second high filter choke a having a first end connected to the second electrical track and a second end connected to the battery terminal.

System and method for controlling radio frequency transmissions from an electronic device

A communications device may include an In-phase (I) circuit having an In-phase modulator and mixer circuit, and an I power amplifier circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit, and a Q power amplifier circuit coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal to generate an amplified Q signal separate from the amplified I signal. A processor selectively switches the digital baseband I signal and the digital baseband Q signal between the I and Q signal inputs to provide selective phase shifting for the digital baseband I and Q signals.

Growing community of inventors

Waterloo, Canada

Michael Stephen Corrigan