Tuned perturbation cone feed for reflector antenna

Details Tuned perturbation cone feed for reflector antenna Tuned perturbation cone feed for reflector antenna

2005-07-19

2005-07-19

Lee, Wilson (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S840000

Reexamination Certificate

active

06919855

ABSTRACT:
A sub-reflector for a dish reflector antenna with a waveguide supported sub-reflector. The sub-reflector formed from a dielectric block, concentric about a longitudinal axis. The dielectric block having a first diameter waveguide junction portion adapted for coupling to an end of the waveguide and a sub-reflector surface coated with an RF reflective material having a periphery with a second diameter larger than the first diameter. A leading cone surface extends from the waveguide junction portion to the second diameter at an angle. The sub-reflector surface and the leading cone surface having a plurality of non-periodic perturbations concentric about the longitudinal axis.

REFERENCES:
patent: 4963878 (1990-10-01), Kildal
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patent: 5973652 (1999-10-01), Sanford et al.
patent: 6020859 (2000-02-01), Kildal
patent: 6137449 (2000-10-01), Kildal
patent: 6429826 (2002-08-01), Karlsson et al.
patent: 6456253 (2002-09-01), Rummeli et al.
patent: 6731249 (2004-05-01), Gau et al.

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