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US 2011/0254755 A1Published application
Multiband multifilar antenna
AssigneeMaxtena, Inc.
InventorCarlo DiNallo
Life of this patent
Estimating the term…
Abstract
Multi-band quadrifilar antennas that are suitable for satellite communication include composite elements each of which include multiple conductors operating at different frequencies connected to a bus bar. Each composite element is coupled to a signal feed and to a ground structure.
Claims29
An antenna assembly comprising:
- a feeding network with a plurality of signal feed points and a ground;
- an antenna structure coupled to the feeding network, including:
- a plurality of antenna elements wherein each of said plurality of antenna elements is coupled to one of said plurality of signal feed points and coupled to said ground.
An antenna assembly comprising:
- a circuit board including a ground plane and a feeding network with four signal feed points, said signal feed points providing equal amplitudes signals with 90 degrees phase difference between adjacent signal feed points, with absolute phase increasing monotonically when moving azimuthally around said circuit board from one signal feed point to another signal feed point;
- an antenna structure coupled to said feeding network, said antenna structure including:
- four composite elements each made of a plurality of parallel linear conductors of different lengths connected together proximate said circuit board, wherein each composite element is coupled to one of said four signal feed points;
- four grounding conductors coupling each composite element to said ground plane of said circuit board.
1 more element
An antenna assembly comprising;
- a feed network including a ground reference and a plurality of signal feeds, wherein said signal feeds are adapted to provide signals that are spaced in phase, and said signal feeds are physically spaced apart, and wherein said signal feeds are directly connected to said ground reference;
- an antenna including a plurality of composite multiband antenna elements wherein each of said plurality of composite multiband antenna elements is coupled to one of said plurality of signal feeds.
Dependencies are inferred from the claim text.