Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2007-10-02
2007-10-02
Nguyen, Hoang V. (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S772000, C343S786000, C343S756000
Reexamination Certificate
active
11071423
ABSTRACT:
An antenna comprises a polarizer, a phasing network and a field radiating element such as a horn. The polarizer and phasing network generate a plurality of phase shifted circularly polarised waves which are superimposed to produce multiple antenna field patterns from a single antenna aperture.
REFERENCES:
patent: 3560976 (1971-02-01), Foldes
patent: 3569870 (1971-03-01), Foldes
patent: 3699583 (1972-10-01), Beguin
patent: 4096482 (1978-06-01), Walters
patent: 4473828 (1984-09-01), Mörz et al.
patent: 6281855 (2001-08-01), Aoki
patent: 06029721 (1999-01-01), None
Fusco Vincent Francis
Subbarao Bandaru
Drinker Biddle & Reath LLP
Nguyen Hoang V.
The Queen's University of Belfast
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