(12) United States Patent ao) Patent No.: Us 7,116,280 B2
Bohlman (45) Date of Patent: Oct. 3,2006
(54) HIGH POWER POSITIONAL FIXTURE FOR A MULTI-POLARIZED ANTENNA
(75) Inventor: Walter A Bohlman, Quakertown, PA (US)
(73) Assignee: BAE Systems Information and
Electronic Systems Integration INC,
Nashua, NH (US)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 183 days.
(21) Appl. No.: 10/986,965
(22) Filed: Nov. 12, 2004
(65) Prior Publication Data
US 2006/0103582 Al May 18, 2006
(51) Int. CI.
H01Q 3/06 (2006.01)
(52) U.S. CI 343/763; 343/766; 343/905
(58) Field of Classification Search 343/762,
343/763, 765, 905 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
4,028,708 A 6/1977 Woodward
A compact fixturing means is disclosed that delivers two or more phase tracked channels of high power (e.g., 1000 Watts) to an antenna that can produce a multiplicity of polarization depending on the phase relationship of the delivered signals. Coaxial cables are used as a service loop to provide two or more channels of phase tracking and high power signals to the multi-polarized antenna. A flat spiral spring is configured within the fixture to the guide two (or more) coaxial cables along a spiral loop to allow approximately equal tension on the cables as the fixture is rotated. The flat spiral spring is operatively coupled to a rotation plate and progresses form an inner radius proximate the fixture input to an outer radius proximate the fixture output.
20 Claims, 3 Drawing Sheets