Brett Walker

Person

San Diego, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Low power high speed maximum input supply selector
- Patent number 11,086,342
- Issue date Aug 10, 2021
- QUALCOMM Incorporated
- Jong Jin Kim
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Level shifter
- Patent number 10,615,796
- Issue date Apr 7, 2020
- QUALCOMM Incorporated
- Zhiqing Zhang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Current measurments in switching regulators
- Patent number 9,755,518
- Issue date Sep 5, 2017
- QUALCOMM Incorporated
- Mukesh Bansal
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electronics interface for device headset jack
- Patent number 9,736,567
- Issue date Aug 15, 2017
- QUALCOMM Incorporated
- Mustafa Keskin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Single wire bus interface
- Patent number 8,750,324
- Issue date Jun 10, 2014
- QUALCOMM Incorporated
- David W. Hansquine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Output circuits with class D amplifier
- Patent number 8,633,763
- Issue date Jan 21, 2014
- QUALCOMM Incorporated
- Brett C Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Direct conversion receiver architecture
- Patent number 8,626,099
- Issue date Jan 7, 2014
- QUALCOMM Incorporated
- Tao Li
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Direct conversion receiver architecture
- Patent number 8,615,212
- Issue date Dec 24, 2013
- QUALCOMM Incorporated
- Tao Li
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Output circuits with class D amplifier
- Patent number 8,536,938
- Issue date Sep 17, 2013
- Qualcomm, Incorporated
- Brett C Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Output circuits with class D amplifier
- Patent number 8,022,756
- Issue date Sep 20, 2011
- Qualcomm, Incorporated
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Calibration techniques for frequency synthesizers
- Patent number 8,019,301
- Issue date Sep 13, 2011
- QUALCOMM Incorporated
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Systems and methods for controlling the voltage of signals used to...
- Patent number 7,974,317
- Issue date Jul 5, 2011
- QUALCOMM Incorporated
- David Maldonado
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Discrete amplitude calibration of oscillators in frequency synthesi...
- Patent number 7,570,925
- Issue date Aug 4, 2009
- QUALCOMM Incorporated
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Calibration techniques for frequency synthesizers
- Patent number 7,546,097
- Issue date Jun 9, 2009
- QUALCOMM Incorporated
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Serial bus interface for direct conversion receiver
- Patent number 7,174,190
- Issue date Feb 6, 2007
- Qualcomm Inc.
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Continuously variable gain radio frequency driver amplifier having...
- Patent number 7,106,138
- Issue date Sep 12, 2006
- QUALCOMM Incorporated
- Kenneth Barnett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable gain selection in direct conversion receiver
- Patent number 7,076,225
- Issue date Jul 11, 2006
- QUALCOMM Incorporated
- Tao Li
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Discrete amplitude calibration of oscillators in frequency synthesi...
- Patent number 7,062,229
- Issue date Jun 13, 2006
- Qualcomm Incorporated
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Continuously variable gain radio frequency driver amplifier having...
- Patent number 6,906,592
- Issue date Jun 14, 2005
- Qualcomm Inc.
- Kenneth Barnett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wireless communication device with phase-locked loop oscillator
- Patent number 6,888,913
- Issue date May 3, 2005
- QUALCOMM Incorporated
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Exponential current generator and method
- Patent number 6,882,185
- Issue date Apr 19, 2005
- Qualcomm, Incorporated
- Brett Christopher Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multi-standard transmitter system and method for a wireless communi...
- Patent number 6,845,083
- Issue date Jan 18, 2005
- QUALCOMM Incorporated
- Steven M. Mollenkopf
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Gain linearizer for variable gain amplifiers
- Patent number 6,711,391
- Issue date Mar 23, 2004
- Qualcomm, Incorporated
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and apparatus for D.C. offset correction in digital-to-analo...
- Patent number 6,278,391
- Issue date Aug 21, 2001
- QUALCOMM Incorporated
- Brett Christopher Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital-to-analog converter D.C. offset correction comparing conver...
- Patent number 6,154,158
- Issue date Nov 28, 2000
- QUALCOMM Incorporated
- Brett Christopher Walker
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
DISTRIBUTED BUILT-IN SELF-TEST AND MONITORING
- Publication number 20240295601
- Publication date Sep 5, 2024
- QUALCOMM Incorporated
- Zdravko LUKIC
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
LEVEL SHIFTER
- Publication number 20180034466
- Publication date Feb 1, 2018
- QUALCOMM Incorporated
- Zhiqing ZHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CURRENT MEASURMENTS IN SWITCHING REGULATORS
- Publication number 20170229962
- Publication date Aug 10, 2017
- QUALCOMM Incorporated
- Mukesh Bansal
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ELECTRONICS INTERFACE FOR DEVICE HEADSET JACK
- Publication number 20160094906
- Publication date Mar 31, 2016
- QUALCOMM Incorporated
- Mustafa KESKIN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR REDUCING COMMON MODE VARIATIONS IN A VOLTA...
- Publication number 20140210482
- Publication date Jul 31, 2014
- QUALCOMM Incorporated
- Baiying Yu
- G01 - MEASURING TESTING
Information Patent Application
DYNAMIC CLOCK BUFFER POWER OPTIMIZATION BASED ON MODES OF OPERATION
- Publication number 20110292855
- Publication date Dec 1, 2011
- QUALCOMM Incorporated
- Juhi Saha
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
OUTPUT CIRCUITS WITH CLASS D AMPLIFIER
- Publication number 20110285463
- Publication date Nov 24, 2011
- QUALCOMM Incorporated
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
OUTPUT CIRCUITS WITH CLASS D AMPLIFIER
- Publication number 20110285472
- Publication date Nov 24, 2011
- QUALCOMM Incorporated
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Direct conversion receiver architecture
- Publication number 20110105070
- Publication date May 5, 2011
- Tao Li
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SINGLE WIRE BUS INTERFACE
- Publication number 20100064074
- Publication date Mar 11, 2010
- QUALCOMM Incorporated
- David W. Hansquine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEMS AND METHODS FOR CONTROLLING THE VOLTAGE OF SIGNALS USED TO...
- Publication number 20090161588
- Publication date Jun 25, 2009
- QUALCOMM Incorporated
- David Maldonado
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OUTPUT CIRCUITS WITH CLASS D AMPLIFIER
- Publication number 20080284508
- Publication date Nov 20, 2008
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CALIBRATION TECHNIQUES FOR FREQUENCY SYNTHESIZERS
- Publication number 20080248771
- Publication date Oct 9, 2008
- QUALCOMM Incorporated
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DIRECT CONVERSION RECEIVER ARCHITECTURE
- Publication number 20080014895
- Publication date Jan 17, 2008
- QUALCOMM Incorporated
- Tao Li
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Discrete amplitude calibration of oscillators in frequency synthesi...
- Publication number 20070049212
- Publication date Mar 1, 2007
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Continuously variable gain radio frequency driver amplifier having...
- Publication number 20060038617
- Publication date Feb 23, 2006
- Kenneth Barnett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Single wire bus interface
- Publication number 20050259609
- Publication date Nov 24, 2005
- David W. Hansquine
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Serial bus interface for direct conversion receiver
- Publication number 20050208919
- Publication date Sep 22, 2005
- Brett Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Continuously variable gain radio frequency driver amplifier having...
- Publication number 20040155708
- Publication date Aug 12, 2004
- Kenneth Barnett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wireless communication device with phase-locked loop oscillator
- Publication number 20040004506
- Publication date Jan 8, 2004
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Multi-standard transmitter system and method for a wireless communi...
- Publication number 20030227896
- Publication date Dec 11, 2003
- Steven M. Mollenkopf
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Current saving technique for charge pump based phase locked loops
- Publication number 20030189463
- Publication date Oct 9, 2003
- Brett C. Walker
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Discrete amplitude calibration of oscillators in frequency synthesi...
- Publication number 20030171106
- Publication date Sep 11, 2003
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Calibration techniques for frequency synthesizers
- Publication number 20030171105
- Publication date Sep 11, 2003
- Jeremy D. Dunworth
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Direct conversion receiver architecture
- Publication number 20020160734
- Publication date Oct 31, 2002
- Tao Li
- H03 - BASIC ELECTRONIC CIRCUITRY

Brett Walker

Person

Patents Grantslast 30 patents

Low power high speed maximum input supply selector

Level shifter

Current measurments in switching regulators

Electronics interface for device headset jack

Single wire bus interface

Output circuits with class D amplifier

Direct conversion receiver architecture

Direct conversion receiver architecture

Output circuits with class D amplifier

Output circuits with class D amplifier

Calibration techniques for frequency synthesizers

Systems and methods for controlling the voltage of signals used to...

Discrete amplitude calibration of oscillators in frequency synthesi...

Calibration techniques for frequency synthesizers

Serial bus interface for direct conversion receiver

Continuously variable gain radio frequency driver amplifier having...

Variable gain selection in direct conversion receiver

Discrete amplitude calibration of oscillators in frequency synthesi...

Continuously variable gain radio frequency driver amplifier having...

Wireless communication device with phase-locked loop oscillator

Exponential current generator and method

Multi-standard transmitter system and method for a wireless communi...

Gain linearizer for variable gain amplifiers

Method and apparatus for D.C. offset correction in digital-to-analo...

Digital-to-analog converter D.C. offset correction comparing conver...

Patents Applicationslast 30 patents

DISTRIBUTED BUILT-IN SELF-TEST AND MONITORING

LEVEL SHIFTER

CURRENT MEASURMENTS IN SWITCHING REGULATORS

ELECTRONICS INTERFACE FOR DEVICE HEADSET JACK

METHOD AND APPARATUS FOR REDUCING COMMON MODE VARIATIONS IN A VOLTA...

DYNAMIC CLOCK BUFFER POWER OPTIMIZATION BASED ON MODES OF OPERATION

OUTPUT CIRCUITS WITH CLASS D AMPLIFIER

OUTPUT CIRCUITS WITH CLASS D AMPLIFIER

Direct conversion receiver architecture

SINGLE WIRE BUS INTERFACE

SYSTEMS AND METHODS FOR CONTROLLING THE VOLTAGE OF SIGNALS USED TO...

OUTPUT CIRCUITS WITH CLASS D AMPLIFIER

CALIBRATION TECHNIQUES FOR FREQUENCY SYNTHESIZERS

DIRECT CONVERSION RECEIVER ARCHITECTURE

Discrete amplitude calibration of oscillators in frequency synthesi...

Continuously variable gain radio frequency driver amplifier having...

Single wire bus interface

Serial bus interface for direct conversion receiver

Continuously variable gain radio frequency driver amplifier having...

Wireless communication device with phase-locked loop oscillator

Multi-standard transmitter system and method for a wireless communi...

Current saving technique for charge pump based phase locked loops

Discrete amplitude calibration of oscillators in frequency synthesi...

Calibration techniques for frequency synthesizers

Direct conversion receiver architecture