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Ralph Kaufman
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La Mesa, CA, US
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last 30 patents
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Patent Grant
Reducing LO leakage in a direct conversion receiver quadrature stage
Patent number
6,766,157
Issue date
Jul 20, 2004
Kyoćera Wireless Corp.
Darin Hunzeker
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Transmitter architectures for communications systems
Patent number
6,721,368
Issue date
Apr 13, 2004
QUALCOMM Incorporated
Saed Younis
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Programmable linear receiver having a variable IIP3 point
Patent number
6,498,926
Issue date
Dec 24, 2002
QUALCOMM Incorporated
Steven C. Ciccarelli
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Quadrature modulator and demodulator
Patent number
6,240,142
Issue date
May 29, 2001
QUALCOMM Incorporated
Ralph E. Kaufman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
High efficiency switched gain power amplifier
Patent number
6,208,202
Issue date
Mar 27, 2001
Qualcomm, Inc.
Ralph E. Kaufman
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Amplifier with adjustable bias current
Patent number
6,175,279
Issue date
Jan 16, 2001
QUALCOMM Incorporated
Steven C. Ciccarelli
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Configurable single and dual VCOs for dual- and tri-band wireless c...
Patent number
6,088,348
Issue date
Jul 11, 2000
Qualcom Incorporated
John H. Bell
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
High efficiency switched gain power amplifier
Patent number
6,060,949
Issue date
May 9, 2000
QUALCOMM Incorporated
Ralph Kaufman
H03 - BASIC ELECTRONIC CIRCUITRY