Daniel F Mccarthy

US Patent:

6392242, May 21, 2002

Filed:

May 27, 1999

Appl. No.:

09/320673

Inventors:

F. Keith Perkins - Alexandria VA
Daniel McCarthy - Ellicott City MD
Martin C. Peckerar - Silver Spring MD
Christie R. K. Marrian - Marbury MD
Eric S. Snow - Springfield VA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01I 100

US Classification:

2504911, 250361 R

Abstract:

A fiducial beam monitor includes a patterned diode layer on a semiconducting substrate. An electrical field between the diode (or diodes) on the diode layer and the semiconducting substrate modulates the size of the depletion layer formed by the diode or diode. A high energy beam incident upon a diode on the diode layer produces a greater current than a high energy beam incident upon a non-diodic region of the same layer. In use, the beam monitor is typically fixed to the backside of a workpiece such as a semitransparent membrane being patterned by a focused high energy beam that is translated with respect to workpiece and attached monitor. The changes in current during translation are then correlated with the position of the beam with respect to the pattern on the diode layer.

US Patent:

8013792, Sep 6, 2011

Filed:

Aug 6, 2009

Appl. No.:

12/462632

Inventors:

Daniel McCarthy - Manlius NY, US
Dean Paschen - Lafayette CO, US
Lary Eichel - Louisville CO, US
Frank Pratt - Tipp City OH, US

Assignee:

The United States of America as represented by the Secretary of the Air Force - Washington DC

International Classification:

H01Q 3/26
H01Q 3/00

US Classification:

342375, 342359, 342383

Abstract:

Method and apparatus for minimizing antenna backside signal response and ambiguity in low frequency applications, particularly low frequency synthetic aperture radar (SAR). Various time delay elements are selectably switched into the signal path so as to cause a null to be placed in the antenna response pattern in the direction of undesired radar returns. The means for selectably switching may be dithered so as to introduce modulation onto the undesired radar return to aid in the discrimination and removal of the undesired radar return from the SAR image during post processing.

US Patent:

20140032625, Jan 30, 2014

Filed:

Dec 12, 2012

Appl. No.:

13/694854

Inventors:

Daniel McCarthy - Manlius NY, US

Assignee:

UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE - Washington DC

International Classification:

G06F 17/16

US Classification:

708607

Abstract:

Invention providing a means for performing matrix multiplication that may be implemented in hardware or software. The invention is scalable to matrices of varying dimension and to permit balancing circuit complexity versus processing throughput.

US Patent:

20190190555, Jun 20, 2019

Filed:

Dec 18, 2017

Appl. No.:

15/844714

Inventors:

- Rome NY, US
DANIEL F MCCARTHY - MANLIUS NY, US
DONALD A HUEBNER - CASTLE ROCK CO, US
NATHAN M DEBARD - SEATTLE WA, US

International Classification:

H04B 1/12
H04L 27/18

Abstract:

An apparatus and method for active noise cancellation, including but not limited to, noise cancellation at VLF frequencies. The invention facilitates the reception of critical information in variable and extreme EMI scenario with no information about the signal of interest. The invention utilizes an automated, signal agnostic active noise cancellation technique and associated hardware components. In order to extract the signal of interest, vector modulation is employed to the signal from the noise only antenna so as to match it and then subtract it from the received signal containing combined noise and signal of interest. This apparatus and method ensures that a signal of interest can be extracted from an extremely noisy environment without any knowledge about the characteristics of that signal.