Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2007-10-09
2007-10-09
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S912000
Reexamination Certificate
active
10496172
ABSTRACT:
A parabolic reflector for an antenna has a plurality of concentric annular sections arranged in series from a first annular section nearest a central axis of the reflector to a last annular section defining an outer perimeter of the reflector. Each section has a parabolic reflecting surface between inner and outer perimeters. The sections are configured such that the focal point associated with at least the last section lies inside an internal volume of the reflector and are arranged with respect to each other along the central axis, such that an overall depth of the reflector is substantially minimized. The inner perimeters of all the sections are preferably arranged to lie substantially on a plane which is perpendicular to the central axis. The outer perimeter of each section except the last section is preferably connected with the inner perimeter of the succeeding section by means of an annular strip. The strips may either each have an angle of inclination to the reflector central axis of between 0° and 3° or they may lie on respective cones running from the respective inner perimeters of the respective sections to which they are joined, to the furthest located focal point or ring.
REFERENCES:
patent: 4513293 (1985-04-01), Stephens
patent: 4626863 (1986-12-01), Knop et al.
patent: 5973652 (1999-10-01), Sanford et al.
patent: 6107973 (2000-08-01), Knop et al.
patent: 6281852 (2001-08-01), Amarillas
patent: 2001/0005180 (2001-06-01), Karlsson et al.
patent: 44 12 769 (1995-10-01), None
Dielectic Feed for Dual Band Operation of Parabolic Reflector Antennas,, U. Mahr, Eleventh International Conference on Antennas and Propagation (IEE Conf. Publ. No. 480), Proceedings of ICAP-11TH, vol. 2, Apr. 17-20, 2001, pp. 701-704.
Chen Shih-Chao
Kirschstein et al.
Marconi Communications GmbH
LandOfFree
Parabolic reflector and antenna incorporating same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Parabolic reflector and antenna incorporating same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parabolic reflector and antenna incorporating same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3870116