Inventor · disambiguated record
Nasserullah Khan
Also filed as: KHAN NASSERULLAH
29 granted patents·1 pending application·360 citations·filing 2001–2024
97Inventor score
Top patents by PatentIndex Score
30 records- 0197US8000409B2Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratiosRESEARCH IN MOTION LTD·Filed 2010·Granted Aug 16, 2011·23 cites·21 claims
- 0295US8290085B2Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratiosCHAN WEN-YEN·Filed 2011·Granted Oct 16, 2012·15 cites·24 claims
- 0395US7907920B2Control of switcher regulated power amplifier modulesRESEARCH IN MOTION LTD·Filed 2007·Granted Mar 15, 2011·24 cites·15 claims
- 0495US7787566B2Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratiosRESEARCH IN MOTION LTD·Filed 2009·Granted Aug 31, 2010·24 cites·16 claims
- 0594US7551689B2Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratiosRESEARCH IN MOTION LTD·Filed 2008·Granted Jun 23, 2009·20 cites·19 claims
- 0693US8160517B2Control of switcher regulated power amplifier modulesCHAN WEN-YEN·Filed 2010·Granted Apr 17, 2012·14 cites·23 claims
- 0793US7873119B2Input drive control for switcher regulated power amplifier modulesRESEARCH IN MOTION LTD·Filed 2007·Granted Jan 18, 2011·23 cites·21 claims
- 0892US8620238B2Method of power amplifier switching power control using post power amplifier power detectionCHAN WEN-YEN·Filed 2010·Granted Dec 31, 2013·37 cites·21 claims
- 0992US7333563B2Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratiosRESEARCH IN MOTION LTD·Filed 2004·Granted Feb 19, 2008·53 cites·21 claims
- 1090US8295792B2Control of switcher regulated power amplifier modulesCHAN WEN-YEN·Filed 2012·Granted Oct 23, 2012·9 cites·21 claims
- 1189US8670503B2Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratiosCHAN WEN-YEN·Filed 2012·Granted Mar 11, 2014·6 cites·32 claims
- 1289US8428181B2Method and apparatus for optimizing transmitter power efficiencyCHAN WEN-YEN·Filed 2010·Granted Apr 23, 2013·9 cites·24 claims
- 1387US6483388B2Direct digital frequency synthesizer and a hybrid frequency synthesizer combining a direct digital frequency synthesizer and a phase locked loopRESEARCH IN MOTION LTD·Filed 2001·Granted Nov 19, 2002·50 cites·68 claims
- 1481US8761305B2Input drive control for switcher regulated power amplifier modulesCHAN WEN-YEN·Filed 2012·Granted Jun 24, 2014·6 cites·19 claims
- 1579US8606199B2Control of switcher regulated power amplifier modulesCHAN WEN-YEN·Filed 2012·Granted Dec 10, 2013·3 cites·21 claims
- 1679US8295397B2Input drive control for switcher regulated power amplifier modulesCHAN WEN-YEN·Filed 2010·Granted Oct 23, 2012·6 cites·20 claims
- 1777US9276545B2Method of power amplifier switching power control using post power amplifier power detectionBLACKBERRY LTD·Filed 2013·Granted Mar 1, 2016·4 cites·20 claims
- 1876US7508888B2Method and apparatus for precise open loop tuning of reference frequency within a wireless deviceRESEARCH IN MOTION LTD·Filed 2005·Granted Mar 24, 2009·5 cites·23 claims
- 1974US7558540B2Method and apparatus for regulating the transmitted power in multi-rate wireless communication systemsRESEARCH IN MOTION LTD·Filed 2003·Granted Jul 7, 2009·13 cites·13 claims
- 2073US8295403B2Method and apparatus for precise open loop tuning of reference frequency within a wireless deviceCHAN WEN-YEN M·Filed 2009·Granted Oct 23, 2012·5 cites·27 claims
- 2169US8655288B2Electronic device with multiple antenna diversity and related methodsKHAN NASSERULLAH·Filed 2012·Granted Feb 18, 2014·3 cites·20 claims
- 2267US7433666B2Dual receive filterRESEARCH IN MOTION LTD·Filed 2005·Granted Oct 7, 2008·4 cites·16 claims
- 2363US9014646B2Electronic device with multiple antenna diversity and related methodsBLACKBERRY LTD·Filed 2013·Granted Apr 21, 2015·1 cites·23 claims
- 2460US8447257B2Dual receive filterCHAN WEN-YEN·Filed 2012·Granted May 21, 2013·1 cites·15 claims
- 2557US8190113B2Dual receive filterCHAN WEN-YEN·Filed 2008·Granted May 29, 2012·2 cites·16 claims
- 2657US2025350028A1Integrated telematics unit antennas for vehiclesHARMAN INT IND·Filed 2024·Application pending·0 cites
- 2753US8873675B2Method and apparatus for optimizing transmitter power efficiencyBLACKBERRY LTD·Filed 2013·Granted Oct 28, 2014·0 cites·20 claims
- 2853US8477878B2Method and apparatus for precise open loop tuning of reference frequency within a wireless deviceCHAN WEN-YEN·Filed 2012·Granted Jul 2, 2013·0 cites·28 claims
- 2952US7869776B2Method and apparatus for regulating the transmitted power in multi-rate wireless communication systemsRESEARCH IN MOTION LTD·Filed 2009·Granted Jan 11, 2011·0 cites·20 claims
- 3048US8965321B2Dual receive filterBLACKBERRY LTD·Filed 2013·Granted Feb 24, 2015·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →