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Darrell Epperson
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Oak Ridge, NC, US
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Patents Grants
last 30 patents
Information
Patent Grant
Power detection arrangement with harmonic suppressor
Patent number
8,032,093
Issue date
Oct 4, 2011
TriQuint Semiconductor, Inc.
Darrell G. Epperson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System for limiting current in an output stage of a power amplifier
Patent number
7,340,235
Issue date
Mar 4, 2008
RF Micro Devices, Inc.
Ulrik Riis Madsen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System for detecting current in an output stage of a power amplifier
Patent number
7,315,152
Issue date
Jan 1, 2008
RF Micro Devices, Inc.
Darrell G. Epperson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Power amplifier control technique for enhanced efficiency
Patent number
7,193,459
Issue date
Mar 20, 2007
RF Micro Devices, Inc.
Darrell G. Epperson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
System and method for detecting compression of a power amplifier ci...
Patent number
7,110,724
Issue date
Sep 19, 2006
RF Micro Devices, Inc.
Darrell Epperson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Tailored collector voltage to minimize variation in AM to PM distor...
Patent number
7,109,791
Issue date
Sep 19, 2006
RF Micro Devices, Inc.
Darrell G. Epperson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Increased dynamic range for power amplifiers used with polar modula...
Patent number
6,701,134
Issue date
Mar 2, 2004
RF Micro Devices, Inc.
Darrell Epperson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Power amplifier control
Patent number
6,701,138
Issue date
Mar 2, 2004
RF Micro Devices, Inc.
Darrell Epperson
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
Power amplifier control
Publication number
20040072597
Publication date
Apr 15, 2004
RF Micro Devices, Inc.
Darrell Epperson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Power amplifier control
Publication number
20030040343
Publication date
Feb 27, 2003
Darrell Epperson
H03 - BASIC ELECTRONIC CIRCUITRY