Inventor
KHAN NASSERULLAH
CA29 patents
⚠️ This page may combine multiple inventors who share the name “KHAN NASSERULLAH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHAN WEN-YEN
12 patentsUS8290085B2Oct 16, 2012
Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
CHAN WEN-YEN15 citations92
US8160517B2Apr 17, 2012
Control of switcher regulated power amplifier modules
CHAN WEN-YEN14 citations92
US8620238B2Dec 31, 2013
Method of power amplifier switching power control using post power amplifier power detection
CHAN WEN-YEN37 citations90
US8428181B2Apr 23, 2013
Method and apparatus for optimizing transmitter power efficiency
CHAN WEN-YEN9 citations84
US8295397B2Oct 23, 2012
Input drive control for switcher regulated power amplifier modules
CHAN WEN-YEN6 citations84
US8295792B2Oct 23, 2012
Control of switcher regulated power amplifier modules
CHAN WEN-YEN9 citations84
US8670503B2Mar 11, 2014
Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
CHAN WEN-YEN6 citations81
US8761305B2Jun 24, 2014
Input drive control for switcher regulated power amplifier modules
CHAN WEN-YEN6 citations73
US8606199B2Dec 10, 2013
Control of switcher regulated power amplifier modules
CHAN WEN-YEN3 citations62
US8447257B2May 21, 2013
Dual receive filter
CHAN WEN-YEN1 citations62
US8190113B2May 29, 2012
Dual receive filter
CHAN WEN-YEN2 citations62
US8477878B2Jul 2, 2013
Method and apparatus for precise open loop tuning of reference frequency within a wireless device
CHAN WEN-YEN0 citations52
RESEARCH IN MOTION LTD
11 patentsUS7333563B2Feb 19, 2008
Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
RESEARCH IN MOTION LTD53 citations96
US8000409B2Aug 16, 2011
Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
RESEARCH IN MOTION LTD23 citations92
US7907920B2Mar 15, 2011
Control of switcher regulated power amplifier modules
RESEARCH IN MOTION LTD24 citations92
US7873119B2Jan 18, 2011
Input drive control for switcher regulated power amplifier modules
RESEARCH IN MOTION LTD23 citations92
US6483388B2Nov 19, 2002
Direct digital frequency synthesizer and a hybrid frequency synthesizer combining a direct digital frequency synthesizer and a phase locked loop
RESEARCH IN MOTION LTD50 citations92
US7787566B2Aug 31, 2010
Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
RESEARCH IN MOTION LTD24 citations91
US7551689B2Jun 23, 2009
Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
RESEARCH IN MOTION LTD20 citations91
US7558540B2Jul 7, 2009
Method and apparatus for regulating the transmitted power in multi-rate wireless communication systems
RESEARCH IN MOTION LTD13 citations82
US7508888B2Mar 24, 2009
Method and apparatus for precise open loop tuning of reference frequency within a wireless device
RESEARCH IN MOTION LTD5 citations74
US7433666B2Oct 7, 2008
Dual receive filter
RESEARCH IN MOTION LTD4 citations74
US7869776B2Jan 11, 2011
Method and apparatus for regulating the transmitted power in multi-rate wireless communication systems
RESEARCH IN MOTION LTD0 citations50
BLACKBERRY LTD
4 patentsUS9276545B2Mar 1, 2016
Method of power amplifier switching power control using post power amplifier power detection
BLACKBERRY LTD4 citations69
US9014646B2Apr 21, 2015
Electronic device with multiple antenna diversity and related methods
BLACKBERRY LTD1 citations52
US8965321B2Feb 24, 2015
Dual receive filter
BLACKBERRY LTD0 citations52
US8873675B2Oct 28, 2014
Method and apparatus for optimizing transmitter power efficiency
BLACKBERRY LTD0 citations52