Inventor
ZHU LIZHONG
CA113 patents
⚠️ This page may combine multiple inventors who share the name “ZHU LIZHONG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RESEARCH IN MOTION LTD
26 patentsUS5966098AOct 12, 1999
Antenna system for an RF data communications device
RESEARCH IN MOTION LTD188 citations99
US5821907AOct 13, 1998
Antenna for a radio telecommunications device
RESEARCH IN MOTION LTD124 citations98
US5764693AJun 9, 1998
Wireless radio modem with minimal inter-device RF interference
RESEARCH IN MOTION LTD167 citations98
US8934837B2Jan 13, 2015
Mobile wireless communications device including NFC antenna matching control circuit and associated methods
RESEARCH IN MOTION LTD235 citations97
US6031505AFeb 29, 2000
Dual embedded antenna for an RF data communications device
RESEARCH IN MOTION LTD199 citations97
US7398072B2Jul 8, 2008
Mobile wireless communications device with reduced microphone noise from radio frequency communications circuitry
RESEARCH IN MOTION LTD29 citations96
US7328047B2Feb 5, 2008
Mobile wireless communications device with reduced interfering energy from the display and related methods
RESEARCH IN MOTION LTD33 citations96
US5917854AJun 29, 1999
Wireless radio modem with minimal interdevice RF interference
RESEARCH IN MOTION LTD76 citations96
US5619531AApr 8, 1997
Wireless radio modem with minimal interdevice RF interference
RESEARCH IN MOTION LTD63 citations96
US7974582B2Jul 5, 2011
Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI)
RESEARCH IN MOTION LTD24 citations93
US7515944B2Apr 7, 2009
Wireless headset having improved RF immunity to RF electromagnetic interference produced from a mobile wireless communications device
RESEARCH IN MOTION LTD22 citations93
US7444174B2Oct 28, 2008
Mobile wireless communications device with reduced interfering energy into audio circuit and related methods
RESEARCH IN MOTION LTD31 citations93
US7243851B2Jul 17, 2007
Mobile wireless communications device with reduced interfering energy from the keyboard
RESEARCH IN MOTION LTD34 citations93
US7483727B2Jan 27, 2009
Mobile wireless communications device having improved antenna impedance match and antenna gain from RF energy
RESEARCH IN MOTION LTD20 citations92
US7310067B1Dec 18, 2007
Mobile wireless communications device with reduced interfering RF energy into RF metal shield secured on circuit board
RESEARCH IN MOTION LTD13 citations92
US8665991B2Mar 4, 2014
Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods
RESEARCH IN MOTION LTD12 citations84
US7941193B2May 10, 2011
Mobile wireless communications device with reduced interfering energy into audio circuit and related methods
RESEARCH IN MOTION LTD9 citations84
US7928925B2Apr 19, 2011
Mobile wireless communications device with reduced interfering RF energy into RF metal shield secured on circuit board
RESEARCH IN MOTION LTD7 citations84
US7925315B2Apr 12, 2011
Portable audio device having reduced sensitivity to RF interference and related methods
RESEARCH IN MOTION LTD10 citations84
US7715578B2May 11, 2010
Hearing aid having improved RF immunity to RF electromagnetic interference produced from a wireless communications device
RESEARCH IN MOTION LTD8 citations84
US7616973B2Nov 10, 2009
Portable audio device having reduced sensitivity to RF interference and related methods
RESEARCH IN MOTION LTD9 citations84
US7363063B2Apr 22, 2008
Mobile wireless communications device with reduced interference from the keyboard into the radio receiver
RESEARCH IN MOTION LTD15 citations84
US7932864B2Apr 26, 2011
Mobile wireless communications device with antenna contact having reduced RF inductance
RESEARCH IN MOTION LTD8 citations81
US7899427B2Mar 1, 2011
Mobile wireless communications device with reduced microphone noise from radio frequency communications circuitry
RESEARCH IN MOTION LTD5 citations74
US7825870B2Nov 2, 2010
Mobile wireless communications device with reduced interfering RF energy into RF metal shield secured on circuit board
RESEARCH IN MOTION LTD3 citations74
US5727020AMar 10, 1998
Wireless radio modem with minimal interdevice RF interference
RESEARCH IN MOTION LTD10 citations73
ZHU LIZHONG
16 patentsUS8315578B2Nov 20, 2012
Mobile wireless communications device with separate in-phase and quadrature power amplification
ZHU LIZHONG21 citations93
US8099142B2Jan 17, 2012
Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI)
ZHU LIZHONG10 citations93
US8594566B2Nov 26, 2013
Mobile wireless communications device with NFC coupling circuit and related methods
ZHU LIZHONG26 citations92
US8223885B2Jul 17, 2012
Mobile wireless communications device with separate In-phase (I) and Quadrature (Q) phase power amplification and power amplifier pre-distortion and IQ balance compensation
ZHU LIZHONG22 citations91
US8744357B2Jun 3, 2014
Mobile wireless communications device having NFC sensor and magnetic sensor and associated methods
ZHU LIZHONG9 citations84
US8660612B2Feb 25, 2014
Electronic device having an NFC antenna in a speaker compartment and related methods
ZHU LIZHONG8 citations84
US8244234B2Aug 14, 2012
System and method of measuring total radiated power from mobile wireless communications device
ZHU LIZHONG15 citations84
US8099064B2Jan 17, 2012
Mobile wireless communications device with reduced harmonics resulting from metal shield coupling
ZHU LIZHONG6 citations84
US8451941B2May 28, 2013
Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods
ZHU LIZHONG8 citations82
US9350405B2May 24, 2016
Method and apparatus for antenna tuning and power consumption management in a communication device
ZHU LIZHONG12 citations81
US8676116B2Mar 18, 2014
Electronic device with NFC antenna adjacent display and related methods
ZHU LIZHONG11 citations81
US8249671B2Aug 21, 2012
Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI)
ZHU LIZHONG4 citations74
US8064963B2Nov 22, 2011
Mobile wireless communications device with reduced interfering energy from the display and related methods
ZHU LIZHONG5 citations74
US9685982B2Jun 20, 2017
Mobile wireless communications device with separate in-phase and quadrature power amplification
ZHU LIZHONG4 citations73
US9413066B2Aug 9, 2016
Method and apparatus for beam forming and antenna tuning in a communication device
ZHU LIZHONG5 citations73
US8269554B2Sep 18, 2012
System and method for controlling radio frequency transmissions from an electronic device
ZHU LIZHONG3 citations73
BLACKBERRY LTD
4 patentsUS9270337B2Feb 23, 2016
Mobile wireless communications device including NFC antenna matching control circuit and associated methods
BLACKBERRY LTD229 citations97
US9806826B2Oct 31, 2017
Mobile wireless communications device with reduced interfering energy from the display and related methods
BLACKBERRY LTD4 citations84
US8750417B2Jun 10, 2014
Mobile wireless communications device with separate in-phase (I) and quadrature (Q) phase power amplification and power amplifier pre-distortion and IQ balance compensation
BLACKBERRY LTD5 citations84
US9686690B2Jun 20, 2017
Method and apparatus for calculating a coverage signal strength indicator
BLACKBERRY LTD3 citations73
RESEACH IN MOTION LTD
2 patentsUS7353041B2Apr 1, 2008
Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI)
RESEACH IN MOTION LTD32 citations95
US7480523B2Jan 20, 2009
Telephone system having reduced sensitivity to RF interference and related methods
RESEACH IN MOTION LTD19 citations92
SUPERPASS COMPANY INC
1 patentCORRIGAN MICHAEL
1 patentShowing the top 50 of 113 patents by PatentIndex Score.