ROBERT ALLEN ARCHER
Pilots at Ocean Ave, Torrance, CA
License number
California A0049145
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
21818 Ocean Ave, Torrance, CA 90503
Professional information
Backfire Bifilar Helical Antenna
US Patent:
4014028, Mar 22, 1977
Filed:
Aug 11, 1975
Appl. No.:
5/603429
Inventors:
John A. Cone - Cypress CA
Robert A. Archer - Torrance CA
Edward R. Pacheco - Fountain Valley CA
Creath E. Peyton - Torrance CA
Robert A. Archer - Torrance CA
Edward R. Pacheco - Fountain Valley CA
Creath E. Peyton - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H01Q 136
US Classification:
343895
Abstract:
A bifilar helical antenna which will radiate or receive in the backfire mode. The antenna consists of two interlaced helixes fed at the tip. Each helix is fed by a transmission line with energy of equal amplitude but 180. degree. out of phase. Optionally the helixes may be connected to a ground plane at the far end for mechanical stability. For the same reason an insulating right cylinder may be used to support the helixes. The two helixes have such a diameter and such a pitch or pitch distance that the currents flowing from their terminals to the far end are out of phase while the currents flowing in the reverse direction are in phase to provide a fast pseudo wave structure.