Rangarajan Rajagopalan

Person

San Diego, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Techniques for managing low or variable phase shift resolutions in...
- Patent number 12,107,646
- Issue date Oct 1, 2024
- QUALCOMM Incorporated
- Vasanthan Raghavan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Jammer detection system
- Patent number 12,107,673
- Issue date Oct 1, 2024
- QUALCOMM Incorporated
- Peter Shah
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polyphase filter with interphase coupling
- Patent number 11,632,098
- Issue date Apr 18, 2023
- QUALCOMM Incorporated
- Timothy Donald Gathman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Transformer-based antenna switching network
- Patent number 11,398,853
- Issue date Jul 26, 2022
- QUALCOMM Incorporated
- Chinmaya Mishra
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
System and method for reducing current noise in a VCO and buffer
- Patent number 11,290,058
- Issue date Mar 29, 2022
- QUALCOMM Incorporated
- Yue Chao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Signal combiner
- Patent number 11,283,409
- Issue date Mar 22, 2022
- QUALCOMM Incorporated
- Lai Kan Leung
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Phase-locked loop (PLL) with multiple error determiners
- Patent number 11,025,260
- Issue date Jun 1, 2021
- QUALCOMM Incorporated
- Yue Chao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
P-type metal-oxide-semiconductor (PMOS) low drop-out (LDO) regulator
- Patent number 10,990,117
- Issue date Apr 27, 2021
- QUALCOMM Incorporated
- Yue Chao
- G05 - CONTROLLING REGULATING
Information Patent Grant
System and method for reducing current noise in a VCO and buffer
- Patent number 10,848,100
- Issue date Nov 24, 2020
- QUALCOMM Incorporated
- Yue Chao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
RF square-law circuit
- Patent number 10,664,001
- Issue date May 26, 2020
- QUALCOMM Incorporated
- Mohamed Abouzied
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-band filter architectures
- Patent number 10,439,593
- Issue date Oct 8, 2019
- QUALCOMM Incorporated
- Timothy Donald Gathman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multiplex modules for carrier aggregation receivers
- Patent number 10,439,858
- Issue date Oct 8, 2019
- QUALCOMM Incorporated
- Aleksandar Miodrag Tasic
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multi-way diversity receiver with multiple synthesizers in a carrie...
- Patent number 10,250,314
- Issue date Apr 2, 2019
- QUALCOMM Incorporated
- Lai Kan Leung
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reconfigurable wideband current-mode filters
- Patent number 10,153,934
- Issue date Dec 11, 2018
- QUALCOMM Incorporated
- Timothy Donald Gathman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiplex modules for carrier aggregation receivers
- Patent number 9,774,485
- Issue date Sep 26, 2017
- QUALCOMM Incorporated
- Aleksandar Miodrag Tasic
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multi-way diversity receiver with multiple synthesizers in a carrie...
- Patent number 9,712,226
- Issue date Jul 18, 2017
- QUALCOMM Incorporated
- Lai Kan Leung
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dynamic local oscillator (LO) scheme and switchable receive (RX) ch...
- Patent number 9,681,447
- Issue date Jun 13, 2017
- QUALCOMM Incorporated
- Yiwu Tang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Avoiding spurious responses with reconfigurable LO dividers
- Patent number 9,615,369
- Issue date Apr 4, 2017
- QUALCOMM Incorporated
- Rajagopalan Rangarajan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Local oscillator signal generation circuit with harmonic current re...
- Patent number 9,529,380
- Issue date Dec 27, 2016
- QUALCOMM Incorporated
- Sujiang Rong
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Reconfigurable multi-mode transceiver
- Patent number 9,525,503
- Issue date Dec 20, 2016
- QUALCOMM Incorporated
- Chiewcharn Narathong
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio frequency (RF) front end having multiple low noise amplifier...
- Patent number 9,473,336
- Issue date Oct 18, 2016
- QUALCOMM Incorporated
- Dongling Pan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
VCO-coupling mitigation in a multiple-carrier, carrier aggregation...
- Patent number 9,379,749
- Issue date Jun 28, 2016
- QUALCOMM Incorporated
- Lai Kan Leung
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplifier with switchable common gate gain buffer
- Patent number 9,184,707
- Issue date Nov 10, 2015
- QUALCOMM Incorporated
- Rajagopalan Rangarajan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Apparatus and method for frequency generation
- Patent number 8,810,322
- Issue date Aug 19, 2014
- QUALCOMM Incorporated
- Rajagopalan Rangarajan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Programmable varactor and methods of operation thereof
- Patent number 8,749,316
- Issue date Jun 10, 2014
- QUALCOMM Incorporated
- Rajagopalan Rangarajan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Capacitive multiplication in a phase locked loop
- Patent number 8,629,700
- Issue date Jan 14, 2014
- QUALCOMM Incorporated
- Yunfei Feng
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
RF buffer circuit with dynamic biasing
- Patent number 8,415,991
- Issue date Apr 9, 2013
- QUALCOMM Incorporated
- Rajagopalan Rangarajan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Enhancing device reliability for voltage controlled oscillator (VCO...
- Patent number 8,242,854
- Issue date Aug 14, 2012
- Qualcomm, Incorporated
- Chinmaya Mishra
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Split-biased current scalable buffer
- Patent number 8,212,619
- Issue date Jul 3, 2012
- Qualcomm, Incorporated
- Yiping Han
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
RF buffer circuit with dynamic biasing
- Patent number 8,149,023
- Issue date Apr 3, 2012
- QUALCOMM Incorporated
- Rangarajan Rajagopalan
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
SHARED PHASE SHIFTER RADIO ARCHITECTURE
- Publication number 20240429906
- Publication date Dec 26, 2024
- QUALCOMM Incorporated
- Abdellatif BELLAOUAR
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
JAMMER DETECTION SYSTEM
- Publication number 20240430031
- Publication date Dec 26, 2024
- QUALCOMM Incorporated
- Peter SHAH
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SPUR SUPPRESSION FOR MILLIMETER WAVE (MMW) RECEIVER
- Publication number 20240214016
- Publication date Jun 27, 2024
- QUALCOMM Incorporated
- Chirag Dipak PATEL
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMIT (TX) LOCAL OSCILLATOR (LO) LEAKAGE CALIBRATION
- Publication number 20240106490
- Publication date Mar 28, 2024
- QUALCOMM Incorporated
- Chinmaya MISHRA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TECHNIQUES FOR MANAGING LOW OR VARIABLE PHASE SHIFT RESOLUTIONS IN...
- Publication number 20240097749
- Publication date Mar 21, 2024
- QUALCOMM Incorporated
- Vasanthan Raghavan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
JAMMER DETECTION SYSTEM
- Publication number 20230073817
- Publication date Mar 9, 2023
- QUALCOMM Incorporated
- Peter SHAH
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Polyphase Filter with Interphase Coupling
- Publication number 20220311423
- Publication date Sep 29, 2022
- QUALCOMM Incorporated
- Timothy Donald Gathman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SIGNAL COMBINER
- Publication number 20220207428
- Publication date Jun 30, 2022
- QUALCOMM Incorporated
- Lai Kan LEUNG
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
TRANSFORMER-BASED ANTENNA SWITCHING NETWORK
- Publication number 20210105047
- Publication date Apr 8, 2021
- QUALCOMM Incorporated
- Chinmaya MISHRA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
P-TYPE METAL-OXIDE-SEMICONDUCTOR (PMOS) LOW DROP-OUT (LDO) REGULATOR
- Publication number 20210072778
- Publication date Mar 11, 2021
- QUALCOMM Incorporated
- Yue CHAO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SIGNAL COMBINER
- Publication number 20210067099
- Publication date Mar 4, 2021
- QUALCOMM Incorporated
- Lai Kan LEUNG
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SYSTEM AND METHOD FOR REDUCING CURRENT NOISE IN A VCO AND BUFFER
- Publication number 20210044253
- Publication date Feb 11, 2021
- QUALCOMM Incorporated
- Yue CHAO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SYSTEM AND METHOD FOR REDUCING CURRENT NOISE IN A VCO AND BUFFER
- Publication number 20200091866
- Publication date Mar 19, 2020
- QUALCOMM Incorporated
- Yue CHAO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RF SQUARE-LAW CIRCUIT
- Publication number 20200073428
- Publication date Mar 5, 2020
- QUALCOMM Incorporated
- Mohamed Abouzied
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTI-BAND FILTER ARCHITECTURES
- Publication number 20190097608
- Publication date Mar 28, 2019
- QUALCOMM Incorporated
- Timothy Donald GATHMAN
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS
- Publication number 20180013600
- Publication date Jan 11, 2018
- QUALCOMM Incorporated
- Aleksandar Miodrag Tasic
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTI-WAY DIVERSITY RECEIVER WITH MULTIPLE SYNTHESIZERS IN A CARRIE...
- Publication number 20170302358
- Publication date Oct 19, 2017
- QUALCOMM Incorporated
- Lai Kan LEUNG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUADRATURE LOCAL OSCILLATOR PHASE SYNTHESIS AND ARCHITECTURE FOR DI...
- Publication number 20160079985
- Publication date Mar 17, 2016
- QUALCOMM Incorporated
- Yunliang ZHU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Reconfigurable Multi-Mode Transceiver
- Publication number 20150349907
- Publication date Dec 3, 2015
- QUALCOMM Incorporated
- Chiewcharn Narathong
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Avoiding Spurious Responses with Reconfigurable LO Dividers
- Publication number 20150334711
- Publication date Nov 19, 2015
- QUALCOMM Incorporated
- Rajagopalan RANGARAJAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RADIO FREQUENCY (RF) FRONT END HAVING MULTIPLE LOW NOISE AMPLIFIER...
- Publication number 20150333941
- Publication date Nov 19, 2015
- QUALCOMM Incorporated
- Dongling PAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS
- Publication number 20150333949
- Publication date Nov 19, 2015
- QUALCOMM Incorporated
- Aleksandar Miodrag Tasic
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VCO-COUPLING MITIGATION IN A MULTIPLE-CARRIER, CARRIER AGGREGATION...
- Publication number 20150333761
- Publication date Nov 19, 2015
- QUALCOMM Incorporated
- Lai Kan LEUNG
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTI-WAY DIVERSITY RECEIVER WITH MULTIPLE SYNTHESIZERS IN A CARRIE...
- Publication number 20150333815
- Publication date Nov 19, 2015
- QUALCOMM Incorporated
- Lai Kan LEUNG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DYNAMIC LOCAL OSCILLATOR (LO) SCHEME AND SWITCHABLE RECEIVE (RX) CH...
- Publication number 20150334710
- Publication date Nov 19, 2015
- QUALCOMM Incorporated
- Yiwu TANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DYNAMIC SECONDARY CELL (SCELL) ALLOCATION AND FREQUENCY PLANNING FO...
- Publication number 20150092683
- Publication date Apr 2, 2015
- QUALCOMM Incorporated
- Rajagopalan RANGARAJAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HARMONIC TRAP FOR COMMON GATE AMPLIFIER
- Publication number 20150056940
- Publication date Feb 26, 2015
- QUALCOMM Incorporated
- Rajagopalan Rangarajan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AMPLIFIER WITH SWITCHABLE COMMON GATE GAIN BUFFER
- Publication number 20140197886
- Publication date Jul 17, 2014
- QUALCOMM Incorporated
- Rajagopalan Rangarajan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CAPACITIVE MULTIPLICATION IN A PHASE LOCKED LOOP
- Publication number 20130187690
- Publication date Jul 25, 2013
- QUALCOMM Incorporated
- Yunfei FENG
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RF BUFFER CIRCUIT WITH DYNAMIC BIASING
- Publication number 20120161850
- Publication date Jun 28, 2012
- Qualcomm Incorporated
- Rajagopalan Rangarajan
- H03 - BASIC ELECTRONIC CIRCUITRY

Rangarajan Rajagopalan

Person

Patents Grantslast 30 patents

Techniques for managing low or variable phase shift resolutions in...

Jammer detection system

Polyphase filter with interphase coupling

Transformer-based antenna switching network

System and method for reducing current noise in a VCO and buffer

Signal combiner

Phase-locked loop (PLL) with multiple error determiners

P-type metal-oxide-semiconductor (PMOS) low drop-out (LDO) regulator

System and method for reducing current noise in a VCO and buffer

RF square-law circuit

Multi-band filter architectures

Multiplex modules for carrier aggregation receivers

Multi-way diversity receiver with multiple synthesizers in a carrie...

Reconfigurable wideband current-mode filters

Multiplex modules for carrier aggregation receivers

Multi-way diversity receiver with multiple synthesizers in a carrie...

Dynamic local oscillator (LO) scheme and switchable receive (RX) ch...

Avoiding spurious responses with reconfigurable LO dividers

Local oscillator signal generation circuit with harmonic current re...

Reconfigurable multi-mode transceiver

Radio frequency (RF) front end having multiple low noise amplifier...

VCO-coupling mitigation in a multiple-carrier, carrier aggregation...

Amplifier with switchable common gate gain buffer

Apparatus and method for frequency generation

Programmable varactor and methods of operation thereof

Capacitive multiplication in a phase locked loop

RF buffer circuit with dynamic biasing

Enhancing device reliability for voltage controlled oscillator (VCO...

Split-biased current scalable buffer

RF buffer circuit with dynamic biasing

Patents Applicationslast 30 patents

SHARED PHASE SHIFTER RADIO ARCHITECTURE

JAMMER DETECTION SYSTEM

SPUR SUPPRESSION FOR MILLIMETER WAVE (MMW) RECEIVER

TRANSMIT (TX) LOCAL OSCILLATOR (LO) LEAKAGE CALIBRATION

TECHNIQUES FOR MANAGING LOW OR VARIABLE PHASE SHIFT RESOLUTIONS IN...

JAMMER DETECTION SYSTEM

Polyphase Filter with Interphase Coupling

SIGNAL COMBINER

TRANSFORMER-BASED ANTENNA SWITCHING NETWORK

P-TYPE METAL-OXIDE-SEMICONDUCTOR (PMOS) LOW DROP-OUT (LDO) REGULATOR

SIGNAL COMBINER

SYSTEM AND METHOD FOR REDUCING CURRENT NOISE IN A VCO AND BUFFER

SYSTEM AND METHOD FOR REDUCING CURRENT NOISE IN A VCO AND BUFFER

RF SQUARE-LAW CIRCUIT

MULTI-BAND FILTER ARCHITECTURES

MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS

MULTI-WAY DIVERSITY RECEIVER WITH MULTIPLE SYNTHESIZERS IN A CARRIE...

QUADRATURE LOCAL OSCILLATOR PHASE SYNTHESIS AND ARCHITECTURE FOR DI...

Reconfigurable Multi-Mode Transceiver

Avoiding Spurious Responses with Reconfigurable LO Dividers

RADIO FREQUENCY (RF) FRONT END HAVING MULTIPLE LOW NOISE AMPLIFIER...

MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS

VCO-COUPLING MITIGATION IN A MULTIPLE-CARRIER, CARRIER AGGREGATION...

MULTI-WAY DIVERSITY RECEIVER WITH MULTIPLE SYNTHESIZERS IN A CARRIE...

DYNAMIC LOCAL OSCILLATOR (LO) SCHEME AND SWITCHABLE RECEIVE (RX) CH...

DYNAMIC SECONDARY CELL (SCELL) ALLOCATION AND FREQUENCY PLANNING FO...

HARMONIC TRAP FOR COMMON GATE AMPLIFIER

AMPLIFIER WITH SWITCHABLE COMMON GATE GAIN BUFFER

CAPACITIVE MULTIPLICATION IN A PHASE LOCKED LOOP

RF BUFFER CIRCUIT WITH DYNAMIC BIASING