Andrew B Macfarland

7414593, Aug 19, 2008

Feb 24, 2006

11/362442

Victor G. Williams - Washington Township OH, US
Andrew B. MacFarland - Beavercreek OH, US
Ethan C. Saladin - Centerville OH, US
Jay C. Marcum - Beavercreek OH, US

Alliant Techsystems Inc. - Minneapolis MN

H01Q 15/02

343909, 343700 MS

A three-dimensional FSS fabrication system is described. FSS elements are pre-mapped in two-dimensional form and constructed on a flat FSS panel that is then formed into a desired three-dimensional shape. The 2-D flat surface of the designed FSS is mapped into a desired three-dimensional curvature so that when formed from 2-D into the 3-D shape, the FSS elements are moved into a desired position and/or orientation. In one embodiment, the mapping from 2-D to 3-D is performed using the elastic properties of a desired substrate material. In one embodiment, one or more flat FSS panels are constructed on a formable or thermo-formable substrate. In one embodiment, the substrate includes a thermoplastic. In one embodiment, the substrate includes a thermoplastic material with fiber reinforcement. The FSS elements can be created by printing, deposition, photo-etching, etc.

8130167, Mar 6, 2012

Apr 10, 2009

12/422075

John R. Glabe - Ramona CA, US
Andrew B. MacFarland - Beavercreek OH, US
Paul C. Kuhl - Vista CA, US
Thomas Barrett Jackson - Portland OR, US

COI Ceramics, Inc. - San Diego CA

H01Q 1/42
H01Q 1/28

343872, 343705

Radomes include an outer wall having a first average thickness and an inner wall having a second average thickness that is different from the first average thickness. At least a major portion of the inner wall is separated from at least a major portion of the outer wall by a space therebetween. The outer wall may comprise a layer of ceramic matrix composite (CMC) material. Aircraft and spacecraft include such radomes. Methods of forming radomes include forming an outer wall having a first average thickness, forming an inner wall having a different second average thickness, and coupling together the inner wall and the outer wall in such a manner as to provide a space between at least a major portion of the outer wall and at least a major portion of the inner wall.

20020180655, Dec 5, 2002

May 31, 2001

09/867591

Wolodymyr Mohuchy - Nutley NJ, US
Peter Beyerle - Kettering OH, US
Andrew MacFarland - Beavercreek OH, US

H01Q013/10
H01Q021/26

343/770000, 343/797000

A dual-polarized radiator for a phased array antenna includes two planar microstrip notch elements that interlock and are perpendicular to each other having their phase centers coincident to provide advantageous operational characteristics when the elements are used to form a wide bandwidth, wide scan angle phased array antenna.