1
Yihong Qi, Lizhong Zhu, Peter J Edmonson, Perry Jarmuszewski, Steven Carkner: Antenna system for an RF data communications device. Research In Motion, Charles B Meyer Esq, Jones Day Reavis & Pogue, October 12, 1999: US05966098 (116 worldwide citation)

An RF data communications device antenna system is shown that includes a dipole and an electromagnetic coupler that provides coupling between each dipole arm to establish a desired resonant bandwidth. An LC matching circuit is provided for matching the dipole to the impedance of the RF data communic ...


2
Yihong Qi, Perry Jarmuszewski, Lizhong Zhu, Peter J Edmonson, Krystyna Bandurska, Robert A Grant: Dual embedded antenna for an RF data communications device. Research In Motion, Charles B Meyer Esq, Jones Day Reavis & Pogue, February 29, 2000: US06031505 (113 worldwide citation)

An RF antenna system is disclosed having at least one meandering antenna line with an aggregate structure formed to substantially extend in two dimensions, to effectively form a top-loaded monopole antenna. The meandering antenna line includes at least one localized bend for providing a compressed e ...


3
Bryan Taylor, Mihal Lazaridis, Peter Edmonson, Perry Jarmuszewski, Lizhong Zhu, Steven Carkner, Matthias Wandel: Wireless radio modem with minimal inter-device RF interference. Research In Motion, Charles B Meyer, Jones Day Reavis & Pogue, June 9, 1998: US05764693 (88 worldwide citation)

A wireless radio modem that may be incorporated into a host system or connected through a PCMCIA or similar port to a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimizes the RF interference betwe ...


4
Lizhong Zhu, Yihong Qi, Perry Jarmuszewski, Peter J Edmonson, Steven Carkner: Antenna for a radio telecommunications device. Research In Motion, Charles B Meyer Esq, Jones Day Reavis & Pogue, October 13, 1998: US05821907 (82 worldwide citation)

A radio telecommunications antenna includes a telescoping antenna portion for substantially receiving an electromagnetic signal. The telescoping portion is attached by an antenna mast for conducting the electromagnetic signal. A dielectric spacer and an inductor are in electrical contact with the an ...


5
Bryan Taylor, Mihal Lazaridis, Peter Edmonson, Perry Jarmuszewski, Lizhong Zhu, Steven Carkner, Matthias Wandel: Wireless radio modem with minimal interdevice RF interference. Research In Motion, Charles B Meyer Esq, Jones Day Reavis & Poque, June 29, 1999: US05917854 (37 worldwide citation)

A wireless radio modem for incorporation into a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimize the RF interference between the radio modem and the host system. Radio modem power conservation ...


6
Bryan Taylor, Mihal Lazaridis, Peter Edmonson, Perry Jarmuszewski, Lizhong Zhu, Steven Carkner, Matthias Wandel: Wireless radio modem with minimal interdevice RF interference. Research In Motion, Charles B Meyer Esq, Jones Day Reavis & Pogue, April 8, 1997: US05619531 (35 worldwide citation)

A wireless radio modem for incorporation into a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimize the RF interference between the radio modem and the host system. Radio modem power conservation ...


7
Lizhong Zhu, Michael Corrigan, Perry Jarmuszewski, Liviu George, George Mankaruse, James Robinson, Marc Drader: Mobile wireless communications device with reduced interfering energy from the display and related methods. Research In Motion, Allen Dyer Doppelt Milbrath & Gilchrist P A, February 5, 2008: US07328047 (19 worldwide citation)

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 ada ...


8
Lizhong Zhu, George Mankaruse, Michael Corrigan: Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI). Research In Motion, Allen Dyer Doppelt Milbrath & Gilchrist P A Attorneys at Law, July 5, 2011: US07974582 (17 worldwide citation)

A mobile wireless communications device includes a housing and circuit board carried by the housing and having radio frequency (RF) circuitry and a processor operative with each other. Audio circuitry is carried by the circuit board and an audio transducer assembly, such as a speaker, has electrical ...


9
Lizhong Zhu, Michael Corrigan, George Mankaruse, Perry Jarmuszewski: Mobile wireless communications device with reduced interfering energy into audio circuit and related methods. Research In Motion, Allen Dyer Doppelt Milbrath & Gilchrist P A, October 28, 2008: US07444174 (17 worldwide citation)

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 bo ...


10
Lizhong Zhu, Michael Corrigan, Perry Jarmuszewski: Mobile wireless communications device with reduced interfering energy from the keyboard. Research In Motion, Allen Dyer Doppelt Milbrath & Gilchrist P A, July 17, 2007: US07243851 (16 worldwide citation)

A mobile wireless communications device includes a circuit board carried by a housing and having RF circuitry and a processor operative with the RF circuitry. A keyboard is carried by the housing and includes a keypad array circuit. A keypad connector is carried by the keypad and is operatively conn ...