DONALD GREGORY CHAVERS
Pilots at Friendship Rd, Somerville, AL
License number
Alabama A2577322
Issued Date
Feb 2017
Expiration Date
Feb 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1395 Friendship Rd, Somerville, AL 35670
Professional information
Radio Frequency Power Load And Associated Method
US Patent:
2009002, Jan 29, 2009
Filed:
Jul 26, 2007
Appl. No.:
11/828590
Inventors:
Donald Gregory Chavers - Somerville AL, US
James J. Richeson - Madison AL, US
James J. Richeson - Madison AL, US
International Classification:
H04B 1/16
US Classification:
4553431
Abstract:
A radio frequency power load and associated method. A radio frequency power load apparatus includes a container and a fluid having an ion source therein, the fluid being contained in the container. Two conductors are immersed in the fluid. A radio frequency transmission system includes a radio frequency transmitter, a radio frequency amplifier connected to the transmitter and a radio frequency power load apparatus connected to the amplifier. The apparatus includes a fluid having an ion source therein, and two conductors immersed in the fluid. A method of dissipating power generated by a radio frequency transmission system includes the steps of: immersing two conductors of a radio frequency power load apparatus in a fluid having an ion source therein; and connecting the apparatus to an amplifier of the transmission system.
High Power Rf Solid State Power Amplifier System
US Patent:
8004364, Aug 23, 2011
Filed:
Jul 26, 2007
Appl. No.:
11/828563
Inventors:
Donald Gregory Chavers - Somerville AL, US
James J. Richeson - Madison AL, US
James J. Richeson - Madison AL, US
Assignee:
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC
International Classification:
H03F 3/68
US Classification:
330295, 330124 R
Abstract:
A high power, high frequency, solid state power amplifier system includes a plurality of input multiple port splitters for receiving a high-frequency input and for dividing the input into a plurality of outputs and a plurality of solid state amplifier units. Each amplifier unit includes a plurality of amplifiers, and each amplifier is individually connected to one of the outputs of multiport splitters and produces a corresponding amplified output. A plurality of multiport combiners combine the amplified outputs of the amplifiers of each of the amplifier units to a combined output. Automatic level control protection circuitry protects the amplifiers and maintains a substantial constant amplifier power output.