Dual-band multiple beam antenna system for communication...

Details Dual-band multiple beam antenna system for communication... Dual-band multiple beam antenna system for communication...

2007-07-10

2007-07-10

Le, Lana N. (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

C455S428000, C455S429000, C342S354000

Reexamination Certificate

active

11259913

ABSTRACT:
A dual-band multiple beam antenna system for a communications satellite sharing a set of reflector antennas for the transmit and receive frequencies. One set of reflectors is common to both the downlink and uplink frequencies. The feed horns are diplexed and exhibit frequency-dependent radiation patterns that separate the phase centers over the downlink and uplink frequency bands to obtain dual-band performance. The focal point of the reflector is in close proximity to the phase center corresponding to the downlink frequency band. The phase center for the uplink frequency band is spaced a predetermined distance from the phase center of the downlink frequency band. According to the present invention, the uplink frequencies are defocused and the downlink frequencies are focused thereby creating identical radiation patterns at both frequency bands and over the coverage region of the communications satellite.

REFERENCES:
patent: 6504514 (2003-01-01), Toland et al.
patent: 1087463 (2001-03-01), None

Affiliated with

Also associated with

Rating

Dual-band multiple beam antenna system for communication... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual-band multiple beam antenna system for communication..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-band multiple beam antenna system for communication... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3739335