Nasserullah Khan

Person

Waterloo, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Method of power amplifier switching power control using post power...
- Patent number 9,276,545
- Issue date Mar 1, 2016
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic device with multiple antenna diversity and related methods
- Patent number 9,014,646
- Issue date Apr 21, 2015
- BlackBerry Limited
- Nasserullah Khan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual receive filter
- Patent number 8,965,321
- Issue date Feb 24, 2015
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for optimizing transmitter power efficiency
- Patent number 8,873,675
- Issue date Oct 28, 2014
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Input drive control for switcher regulated power amplifier modules
- Patent number 8,761,305
- Issue date Jun 24, 2014
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for improving power amplifier efficiency in wi...
- Patent number 8,670,503
- Issue date Mar 11, 2014
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic device with multiple antenna diversity and related methods
- Patent number 8,655,288
- Issue date Feb 18, 2014
- BlackBerry Limited
- Nasserullah Khan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of power amplifier switching power control using post power...
- Patent number 8,620,238
- Issue date Dec 31, 2013
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control of switcher regulated power amplifier modules
- Patent number 8,606,199
- Issue date Dec 10, 2013
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for precise open loop tuning of reference freq...
- Patent number 8,477,878
- Issue date Jul 2, 2013
- Research In Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual receive filter
- Patent number 8,447,257
- Issue date May 21, 2013
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for optimizing transmitter power efficiency
- Patent number 8,428,181
- Issue date Apr 23, 2013
- Research In Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control of switcher regulated power amplifier modules
- Patent number 8,295,792
- Issue date Oct 23, 2012
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Input drive control for switcher regulated power amplifier modules
- Patent number 8,295,397
- Issue date Oct 23, 2012
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for precise open loop tuning of reference freq...
- Patent number 8,295,403
- Issue date Oct 23, 2012
- Research In Motion Limited
- Wen-Yen M. Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for improving power amplifier efficiency in wi...
- Patent number 8,290,085
- Issue date Oct 16, 2012
- Research In Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual receive filter
- Patent number 8,190,113
- Issue date May 29, 2012
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control of switcher regulated power amplifier modules
- Patent number 8,160,517
- Issue date Apr 17, 2012
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for improving power amplifier efficiency in wi...
- Patent number 8,000,409
- Issue date Aug 16, 2011
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control of switcher regulated power amplifier modules
- Patent number 7,907,920
- Issue date Mar 15, 2011
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Input drive control for switcher regulated power amplifier modules
- Patent number 7,873,119
- Issue date Jan 18, 2011
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for regulating the transmitted power in multi-...
- Patent number 7,869,776
- Issue date Jan 11, 2011
- Research in Motion Limited
- Xin Jin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for improving power amplifier efficiency in wi...
- Patent number 7,787,566
- Issue date Aug 31, 2010
- Research in Motion Limited
- Wen-Yen M. Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for regulating the transmitted power in multi-...
- Patent number 7,558,540
- Issue date Jul 7, 2009
- Research In Motion Limited
- Xin Jin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for improving power amplifier efficiency in wi...
- Patent number 7,551,689
- Issue date Jun 23, 2009
- Research in Motion Limited
- Wen-Yen M. Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for precise open loop tuning of reference freq...
- Patent number 7,508,888
- Issue date Mar 24, 2009
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual receive filter
- Patent number 7,433,666
- Issue date Oct 7, 2008
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for improving power amplifier efficiency in wi...
- Patent number 7,333,563
- Issue date Feb 19, 2008
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Direct digital frequency synthesizer and a hybrid frequency synthes...
- Patent number 6,483,388
- Issue date Nov 19, 2002
- Research In Motion Limited
- Nasserullah Khan
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
ELECTRONIC DEVICE WITH MULTIPLE ANTENNA DIVERSITY AND RELATED METHODS
- Publication number 20140106682
- Publication date Apr 17, 2014
- BlackBerry Limited
- NASSERULLAH KHAN
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF POWER AMPLIFIER SWITCHING POWER CONTROL USING POST POWER...
- Publication number 20140065990
- Publication date Mar 6, 2014
- BlackBerry Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR OPTIMIZING TRANSMITTER POWER EFFICIENCY
- Publication number 20130273863
- Publication date Oct 17, 2013
- Wen-Yen CHAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DUAL RECEIVE FILTER
- Publication number 20130244607
- Publication date Sep 19, 2013
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ELECTRONIC DEVICE WITH MULTIPLE ANTENNA DIVERSITY AND RELATED METHODS
- Publication number 20130196710
- Publication date Aug 1, 2013
- Research in Motion Limited
- Nasserullah KHAN
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20130149978
- Publication date Jun 13, 2013
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR PRECISE OPEN LOOP TUNING OF REFERENCE FREQ...
- Publication number 20130016800
- Publication date Jan 17, 2013
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20130012147
- Publication date Jan 10, 2013
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20130005286
- Publication date Jan 3, 2013
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and Apparatus for Improving Power Amplifier Efficiency in Wi...
- Publication number 20120329411
- Publication date Dec 27, 2012
- Research in Motion Limited
- Wen-Yen CHAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DUAL RECEIVE FILTER
- Publication number 20120220242
- Publication date Aug 30, 2012
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IMPROVED CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20120122411
- Publication date May 17, 2012
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD OF POWER AMPLIFIER SWITCHING POWER CONTROL USING POST POWER...
- Publication number 20120021704
- Publication date Jan 26, 2012
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...
- Publication number 20110319124
- Publication date Dec 29, 2011
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR OPTIMIZING TRANSMITTER POWER EFFICIENCY
- Publication number 20110130105
- Publication date Jun 2, 2011
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...
- Publication number 20100291887
- Publication date Nov 18, 2010
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20100233978
- Publication date Sep 16, 2010
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20100227578
- Publication date Sep 9, 2010
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...
- Publication number 20090245419
- Publication date Oct 1, 2009
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR REGULATING THE TRANSMITTED POWER IN MULTI-...
- Publication number 20090239487
- Publication date Sep 24, 2009
- Research in Motion Limited
- Xin Jin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR PRECISE OPEN LOOP TUNING OF REFERENCE FREQ...
- Publication number 20090135956
- Publication date May 28, 2009
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DUAL RECEIVE FILTER
- Publication number 20080318542
- Publication date Dec 25, 2008
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...
- Publication number 20080118001
- Publication date May 22, 2008
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20070291872
- Publication date Dec 20, 2007
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES
- Publication number 20070291718
- Publication date Dec 20, 2007
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Dual receive filter
- Publication number 20060154635
- Publication date Jul 13, 2006
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for precise open loop tuning of reference freq...
- Publication number 20060104394
- Publication date May 18, 2006
- Research in Motion Limited
- Wen-Yen Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for improving power amplifier efficiency in wi...
- Publication number 20050186923
- Publication date Aug 25, 2005
- Research in Motion Limited
- Wen-Yen Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for regulating the transmitted power in multi-...
- Publication number 20040147235
- Publication date Jul 29, 2004
- Xin Jin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Direct digital frequency synthesizer and a hybrid frequency synthes...
- Publication number 20020008588
- Publication date Jan 24, 2002
- Nasserullah Khan
- G06 - COMPUTING CALCULATING COUNTING

Nasserullah Khan

Person

Patents Grantslast 30 patents

Method of power amplifier switching power control using post power...

Electronic device with multiple antenna diversity and related methods

Dual receive filter

Method and apparatus for optimizing transmitter power efficiency

Input drive control for switcher regulated power amplifier modules

Method and apparatus for improving power amplifier efficiency in wi...

Electronic device with multiple antenna diversity and related methods

Method of power amplifier switching power control using post power...

Control of switcher regulated power amplifier modules

Method and apparatus for precise open loop tuning of reference freq...

Dual receive filter

Method and apparatus for optimizing transmitter power efficiency

Control of switcher regulated power amplifier modules

Input drive control for switcher regulated power amplifier modules

Method and apparatus for precise open loop tuning of reference freq...

Method and apparatus for improving power amplifier efficiency in wi...

Dual receive filter

Control of switcher regulated power amplifier modules

Method and apparatus for improving power amplifier efficiency in wi...

Control of switcher regulated power amplifier modules

Input drive control for switcher regulated power amplifier modules

Method and apparatus for regulating the transmitted power in multi-...

Method and apparatus for improving power amplifier efficiency in wi...

Method and apparatus for regulating the transmitted power in multi-...

Method and apparatus for improving power amplifier efficiency in wi...

Method and apparatus for precise open loop tuning of reference freq...

Dual receive filter

Method and apparatus for improving power amplifier efficiency in wi...

Direct digital frequency synthesizer and a hybrid frequency synthes...

Patents Applicationslast 30 patents

ELECTRONIC DEVICE WITH MULTIPLE ANTENNA DIVERSITY AND RELATED METHODS

METHOD OF POWER AMPLIFIER SWITCHING POWER CONTROL USING POST POWER...

METHOD AND APPARATUS FOR OPTIMIZING TRANSMITTER POWER EFFICIENCY

DUAL RECEIVE FILTER

ELECTRONIC DEVICE WITH MULTIPLE ANTENNA DIVERSITY AND RELATED METHODS

INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES

METHOD AND APPARATUS FOR PRECISE OPEN LOOP TUNING OF REFERENCE FREQ...

CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES

INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES

Method and Apparatus for Improving Power Amplifier Efficiency in Wi...

DUAL RECEIVE FILTER

IMPROVED CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES

METHOD OF POWER AMPLIFIER SWITCHING POWER CONTROL USING POST POWER...

METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...

METHOD AND APPARATUS FOR OPTIMIZING TRANSMITTER POWER EFFICIENCY

METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...

INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES

CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES

METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...

METHOD AND APPARATUS FOR REGULATING THE TRANSMITTED POWER IN MULTI-...

METHOD AND APPARATUS FOR PRECISE OPEN LOOP TUNING OF REFERENCE FREQ...

DUAL RECEIVE FILTER

METHOD AND APPARATUS FOR IMPROVING POWER AMPLIFIER EFFICIENCY IN WI...

INPUT DRIVE CONTROL FOR SWITCHER REGULATED POWER AMPLIFIER MODULES

CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES

Dual receive filter

Method and apparatus for precise open loop tuning of reference freq...

Method and apparatus for improving power amplifier efficiency in wi...

Method and apparatus for regulating the transmitted power in multi-...

Direct digital frequency synthesizer and a hybrid frequency synthes...