Erick K Maxwell from Peachtree City, GA, age 66

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Work:

Money Feet
Owner

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Rf Microwave Circuit And Pulse Shaping Method
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US Patent:

8248125, Aug 21, 2012
Filed:

Feb 9, 2012
Appl. No.:

13/369936
Inventors:

Erick Maxwell - Lithia Springs GA, US
Thomas Weller - Lutz FL, US
Ebenezer Odu - Brandon FL, US
Assignee:

University of South Florida - Tampa FL
International Classification:

H03K 3/84
US Classification:

327164, 327 18, 327 27, 327291
Abstract:

A multi-port circuit and corresponding method for simultaneous shaping of sub-nanosecond pulses (MCSP). The MCSP includes a coupled-line coupler, a Schottky detector diode, and circuitry for compressing the rising and falling edges of a waveform. The MCSP simultaneously produces square wave, Gaussian, and monocycle waveforms by differentiating a sinusoidal source. The method includes the steps of compressing the rising edge of a sinusoidal source waveform, differentiating the resulting waveform to form a square waveform and a Gaussian waveform, filtering out the positive going Gaussian to produce a negative going Gaussian, differentiating the Gaussian waveform to form a monocycle waveform, and compressing the falling edge of the square waveform to produce a square wave form with both edges compressed.

System And Method For A Dynamic Liquid Core Patch Antenna And Broadband Frequency Agility
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US Patent:

20120280870, Nov 8, 2012
Filed:

May 7, 2012
Appl. No.:

13/466001
Inventors:

Erick N. Maxwell - Atlanta GA, US
Assignee:

Georgia Tech Research Corporation - Atlanta GA
International Classification:

H01Q 1/38
US Classification:

343745
Abstract:

An exemplary embodiment of the present invention provides a tunable liquid core patch antenna comprising a top-side patch, a ground plane, and a liquid core substrate positioned substantially between the top-side patch and the ground plane. The liquid core substrate can comprise a first liquid having a first dielectric constant and a second liquid having a second dielectric constant greater than the first dielectric constant. The first liquid and second liquid can form a mixture having an effective dielectric constant greater than the first dielectric constant and less than the second dielectric constant.