BRIAN KEITH EPLETT
Pilots at Bowers Brk Dr, Lilburn, GA
License number
Georgia C1063546
Issued Date
Sep 2016
Expiration Date
Sep 2018
Category
Airmen
Address
Address
5065 Bowers Brook Dr SW, Lilburn, GA 30047
Professional information
Integrated Technique For Enhanced Power Amplifier Forward Power Detection
US Patent:
2013030, Nov 21, 2013
Filed:
May 14, 2013
Appl. No.:
13/894221
Inventors:
Brian Eplett - Lilburn GA, US
Assignee:
Microsemi Corporation - Aliso Viejo CA
International Classification:
H03G 3/00
US Classification:
330278
Abstract:
A power amplifier has power detection capabilities that include a radio frequency (RF) power amplifier that has a gain stage that includes a gain stage input, a gain stage output, and a feedback loop coupled between an input and an output of the power amplifier. A detection circuit has a first detection circuit input electrically coupled to the gain stage input and has a detection circuit output. An amplitude control circuit and a phase control circuit are electrically coupled together in series between the gain stage output and a second detection circuit input. The amplitude control circuit and the phase control circuit produce a signal that is received by the second detection circuit input so that the detection circuit can detect a signal at the detection circuit output that is proportional to a the forward power output of the power amplifier and is insensitive to power amplifier output load mismatch.
Integrated Start-Up Bias Boost For Dynamic Error Vector Magnitude Enhancement
US Patent:
2013030, Nov 21, 2013
Filed:
May 17, 2013
Appl. No.:
13/897192
Inventors:
Brian Eplett - Lilburn GA, US
Mark Santini - Atlanta GA, US
Mark Santini - Atlanta GA, US
Assignee:
Microsemi Corporation - Aliso Viejo CA
International Classification:
H03G 3/00
US Classification:
330285
Abstract:
Devices and methods for correcting for start-up transients in integrated power amplifiers are disclosed. A delay element is arranged to produce a delay waveform signal that is responsive to an input voltage signal. A transconductance element has an input that receives the delay waveform signal and is arranged to provide an output boost current that is based on the delay waveform signal and a gain of the transconductance element. A reference element provides an output bias current that is responsive to a static reference current and the boost current. A bias element has an input that receives the bias current and is arranged to provide a bias control output. A power amplifier is responsive to the bias control output and is arranged to provide an amplified power output. In some examples, the boost current is adjusted based on a supply voltage and an input power of the power amplifier.
On-Chip Impedance Matching Using A Variable Capacitor
US Patent:
2008021, Sep 4, 2008
Filed:
Mar 1, 2007
Appl. No.:
11/680644
Inventors:
Brian Keith Eplett - Lilburn GA, US
International Classification:
H03H 7/38
US Classification:
333 173
Abstract:
A system and a method for on-chip impedance matching, of at least two ports: an output source and an input load. The system includes an on-chip integrated impedance matching circuit (IMC) that comprises: at least one variable capacitor; a control unit that enables tuning of the variable capacitor, receiving and transmitting of signals and processing of signals; and at least one peak detector that enables detection of signal peaks (SP). Control unit enables determining of a substantially optimal signal peak and tuning of the variable capacitor to a substantially optimal capacitance that is corresponding to the said optimal signal peak. The highest signal peak provides the substantially optimal impedance matching between the ports.