Ram Kelkar

Person

Burlington, VT, US

People

Patents Grantslast 30 patents

Information Patent Grant
Variable capacitor structure
- Patent number 9,425,736
- Issue date Aug 23, 2016
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Structure for an inductor-capacitor voltage-controlled oscillator
- Patent number 9,281,779
- Issue date Mar 8, 2016
- GLOBALFOUNDRIES, INC.
- Herschel A. Ainspan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase noise reduction in LC-VCO
- Patent number 9,252,717
- Issue date Feb 2, 2016
- GLOBALFOUNDRIES Inc.
- Anthony R. Bonaccio
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Structure for an inductor-capacitor voltage-controlled oscillator
- Patent number 8,912,854
- Issue date Dec 16, 2014
- International Business Machines Corporation
- Herschel A. Ainspan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Input jitter filter for a phase-locked loop (PLL)
- Patent number 8,648,634
- Issue date Feb 11, 2014
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable filter for LC tank voltage controlled oscillator (VCO)...
- Patent number 8,373,510
- Issue date Feb 12, 2013
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Current controlled oscillation device and method having wide freque...
- Patent number 7,915,963
- Issue date Mar 29, 2011
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Negative resistance oscillator with additional bias current injection
- Patent number 7,728,687
- Issue date Jun 1, 2010
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Design structure for improved current controlled oscillation device...
- Patent number 7,710,206
- Issue date May 4, 2010
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method for dividing a high-frequency signal
- Patent number 7,545,191
- Issue date Jun 9, 2009
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable sensitivity frequency coincidence detection circuit an...
- Patent number 7,532,040
- Issue date May 12, 2009
- International Business Machines Corporation
- Ram Kelkar
- G01 - MEASURING TESTING
Information Patent Grant
Structure for voltage controlled oscillator
- Patent number 7,489,207
- Issue date Feb 10, 2009
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Adjustment of PLL bandwidth for jitter control using feedback circu...
- Patent number 7,391,271
- Issue date Jun 24, 2008
- International Business Machines Corporation
- Hayden C Cranford, Jr.
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable low-power high-frequency divider
- Patent number 7,378,890
- Issue date May 27, 2008
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Current controlled oscillation device and method having wide freque...
- Patent number 7,355,486
- Issue date Apr 8, 2008
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable low-power high-frequency divider
- Patent number 7,342,429
- Issue date Mar 11, 2008
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable low-power high-frequency divider
- Patent number 7,180,973
- Issue date Feb 20, 2007
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable low-power high-frequency divider
- Patent number 7,075,350
- Issue date Jul 11, 2006
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Apparatus and method for high frequency state machine divider with...
- Patent number 7,049,864
- Issue date May 23, 2006
- International Business Machines Corporation
- Ram Kelkar
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Wide frequency range voltage-controlled oscillators (VCO)
- Patent number 6,943,608
- Issue date Sep 13, 2005
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variation of effective filter capacitance in phase lock loop circui...
- Patent number 6,940,324
- Issue date Sep 6, 2005
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable low-power high-frequency divider
- Patent number 6,917,662
- Issue date Jul 12, 2005
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
System and method for control parameter re-centering in a controlle...
- Patent number 6,882,230
- Issue date Apr 19, 2005
- International Business Machines Corporation
- Joseph A. Iadanza
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Charge pump
- Patent number 6,876,238
- Issue date Apr 5, 2005
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase error control for phase-locked loops
- Patent number 6,456,165
- Issue date Sep 24, 2002
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and apparatus for derivative controlled phase locked loop sy...
- Patent number 6,300,838
- Issue date Oct 9, 2001
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable, self-resetting divider
- Patent number 6,057,719
- Issue date May 2, 2000
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Asynchronously programmable frequency divider circuit with a symmet...
- Patent number 6,009,139
- Issue date Dec 28, 1999
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase locked loop having adaptive jitter reduction
- Patent number 5,828,255
- Issue date Oct 27, 1998
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase-lock indicator circuit with phase-only detection
- Patent number 5,680,076
- Issue date Oct 21, 1997
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
PHASE NOISE REDUCTION IN LC-VCO
- Publication number 20150357977
- Publication date Dec 10, 2015
- International Business Machines Corporation
- Anthony R. BONACCIO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VARIABLE CAPACITOR STRUCTURE
- Publication number 20150188490
- Publication date Jul 2, 2015
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DESIGN STRUCTURE FOR AN INDUCTOR-CAPACITOR VOLTAGE-CONTROLLED OSCIL...
- Publication number 20150002237
- Publication date Jan 1, 2015
- International Business Machines Corporation
- Herschel A. Ainspan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DESIGN STRUCTURE FOR AN INDUCTOR-CAPACITOR VOLTAGE-CONTROLLED OSCIL...
- Publication number 20140191816
- Publication date Jul 10, 2014
- International Business Machines Corporation
- Herschel A. Ainspan
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INPUT JITTER FILTER FOR A PHASE-LOCKED LOOP (PLL)
- Publication number 20130300469
- Publication date Nov 14, 2013
- International Business Machines Corporation
- Ram KELKAR
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Programmable Filter for LC Tank Voltage Controlled Oscillator (VCO)...
- Publication number 20090261916
- Publication date Oct 22, 2009
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
PROGRAMMABLE SENSITIVITY FREQUENCY COINCIDENCE DETECTION CIRCUIT AN...
- Publication number 20090108879
- Publication date Apr 30, 2009
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ADJUSTMENT OF PLL BANDWIDTH FOR JITTER CONTROL USING FEEDBACK CIRCU...
- Publication number 20080218229
- Publication date Sep 11, 2008
- International Business Machines Corporation
- Hayden C. Cranford
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
METHOD FOR DIVIDING A HIGH-FREQUENCY SIGNAL
- Publication number 20080191752
- Publication date Aug 14, 2008
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
STRUCTURE FOR IMPROVED CUTTENT CONTROLLED OSCILLATION DEVICE AND ME...
- Publication number 20080164950
- Publication date Jul 10, 2008
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
IMPROVED CURRENT CONTROLLED OSCILLATION DEVICE AND METHOD HAVING WI...
- Publication number 20080061895
- Publication date Mar 13, 2008
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ADJUSTMENT OF PLL BANDWIDTH FOR JITTER CONTROL USING FEEDBACK CIRCU...
- Publication number 20080007345
- Publication date Jan 10, 2008
- International Business Machines Corporation
- Hayden C. Cranford
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
PROGRAMMABLE LOW-POWER HIGH-FREQUENCY DIVIDER
- Publication number 20080007310
- Publication date Jan 10, 2008
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
IMPROVED CURRENT CONTROLLED OSCILLATION DEVICE AND METHOD HAVING WI...
- Publication number 20070229173
- Publication date Oct 4, 2007
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VOLTAGE-CONTROLLED OSCILLATORS (VCO)
- Publication number 20070069830
- Publication date Mar 29, 2007
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Programmable low-power high-frequency divider
- Publication number 20060158237
- Publication date Jul 20, 2006
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Programmable low-power high-frequency divider
- Publication number 20060109947
- Publication date May 25, 2006
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
APPARATUS AND METHOD FOR HIGH FREQUENCY STATE MACHINE DIVIDER WITH...
- Publication number 20050280449
- Publication date Dec 22, 2005
- International Business Machines Corporation
- Ram Kelkar
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Programmable low-power high-frequency divider
- Publication number 20050146362
- Publication date Jul 7, 2005
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
WIDE FREQUENCY RANGE VOLTAGE-CONTROLLED OSCILLATORS (VCO)
- Publication number 20050116758
- Publication date Jun 2, 2005
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VARIATION OF EFFECTIVE FILTER CAPACITANCE IN PHASE LOCK LOOP CIRCUI...
- Publication number 20050110534
- Publication date May 26, 2005
- International Business Machines Corporation
- Ram Kelkar
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Programmable low-power high-frequency divider
- Publication number 20050057285
- Publication date Mar 17, 2005
- International Business Machines Corporation
- John S. Austin
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SYSTEM AND METHOD FOR CONTROL PARAMETER RE-CENTERING IN A CONTROLLE...
- Publication number 20040263259
- Publication date Dec 30, 2004
- International Business Machines Corporation
- Joseph A. Iadanza
- H03 - BASIC ELECTRONIC CIRCUITRY

Person

Patents Grantslast 30 patents

Variable capacitor structure

Structure for an inductor-capacitor voltage-controlled oscillator

Phase noise reduction in LC-VCO

Structure for an inductor-capacitor voltage-controlled oscillator

Input jitter filter for a phase-locked loop (PLL)

Programmable filter for LC tank voltage controlled oscillator (VCO)...

Current controlled oscillation device and method having wide freque...

Negative resistance oscillator with additional bias current injection

Design structure for improved current controlled oscillation device...

Method for dividing a high-frequency signal

Programmable sensitivity frequency coincidence detection circuit an...

Structure for voltage controlled oscillator

Adjustment of PLL bandwidth for jitter control using feedback circu...

Programmable low-power high-frequency divider

Current controlled oscillation device and method having wide freque...

Programmable low-power high-frequency divider

Programmable low-power high-frequency divider

Programmable low-power high-frequency divider

Apparatus and method for high frequency state machine divider with...

Wide frequency range voltage-controlled oscillators (VCO)

Variation of effective filter capacitance in phase lock loop circui...

Programmable low-power high-frequency divider

System and method for control parameter re-centering in a controlle...

Charge pump

Phase error control for phase-locked loops

Method and apparatus for derivative controlled phase locked loop sy...

Programmable, self-resetting divider

Asynchronously programmable frequency divider circuit with a symmet...

Phase locked loop having adaptive jitter reduction

Phase-lock indicator circuit with phase-only detection

Patents Applicationslast 30 patents

PHASE NOISE REDUCTION IN LC-VCO

VARIABLE CAPACITOR STRUCTURE

DESIGN STRUCTURE FOR AN INDUCTOR-CAPACITOR VOLTAGE-CONTROLLED OSCIL...

DESIGN STRUCTURE FOR AN INDUCTOR-CAPACITOR VOLTAGE-CONTROLLED OSCIL...

INPUT JITTER FILTER FOR A PHASE-LOCKED LOOP (PLL)

Programmable Filter for LC Tank Voltage Controlled Oscillator (VCO)...

PROGRAMMABLE SENSITIVITY FREQUENCY COINCIDENCE DETECTION CIRCUIT AN...

ADJUSTMENT OF PLL BANDWIDTH FOR JITTER CONTROL USING FEEDBACK CIRCU...

METHOD FOR DIVIDING A HIGH-FREQUENCY SIGNAL

STRUCTURE FOR IMPROVED CUTTENT CONTROLLED OSCILLATION DEVICE AND ME...

IMPROVED CURRENT CONTROLLED OSCILLATION DEVICE AND METHOD HAVING WI...

ADJUSTMENT OF PLL BANDWIDTH FOR JITTER CONTROL USING FEEDBACK CIRCU...

PROGRAMMABLE LOW-POWER HIGH-FREQUENCY DIVIDER

IMPROVED CURRENT CONTROLLED OSCILLATION DEVICE AND METHOD HAVING WI...

VOLTAGE-CONTROLLED OSCILLATORS (VCO)

Programmable low-power high-frequency divider

Programmable low-power high-frequency divider

APPARATUS AND METHOD FOR HIGH FREQUENCY STATE MACHINE DIVIDER WITH...

Programmable low-power high-frequency divider

WIDE FREQUENCY RANGE VOLTAGE-CONTROLLED OSCILLATORS (VCO)

VARIATION OF EFFECTIVE FILTER CAPACITANCE IN PHASE LOCK LOOP CIRCUI...

Programmable low-power high-frequency divider

SYSTEM AND METHOD FOR CONTROL PARAMETER RE-CENTERING IN A CONTROLLE...