Internally branch fed slotted coaxial antenna
AssigneeGeneral Signal Corporation
InventorJohn L. Schadler
Life of this patent
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Abstract
A slotted coaxial antenna design that accomplishes four-way branch feeding without the use of feedlines, is disclosed. In a preferred embodiment, the antenna design is based on a number of layered coaxial feeds where each layer feeds the next outer layer. The internally branch fed slotted coaxial antenna design produces substantially no beam sway over at least four television channels, can accommodate pressurizing for increased power handling, and provides desirable antenna output response performance suitable for digital TV transmission and NTSC antenna systems.
Claims20
A slotted coaxial antenna having layered coaxial feeds, said antenna comprising:
- (a) a plurality of inner conductor layers in a slotted outer conductor layer;
- (b) two feed points spatially located along said inner conductor layers, to split out signals;
- and
- (c) a first power split disposed substantially intermediate of said two feed points, to hold frequency response stable.
A slotted coaxial antenna having layered coaxial feeds, said antenna comprising:
- plurality of inner conducting means, within a slotted outer conductor means, for transmitting signals;
- two feed means, spatially located along said inner conducting means, for splitting out said signals;
- and
- power splitting means, disposed substantially intermediate of said two feed means, for holding a frequency response of said antenna stable.
A methof of transmitting signals, comprising:
- transmitting the signals to a slotted coaxial antenna;
- and
- radiating the signals from said slotted coaxial antenna, wherein said slotted coaxial antenna has a plurality of inner conductor layers located within outer conductor layer, two feed points spatially located along said inner conductor layers for splitting out said signals, and a first power split means disposed substantially intermediate of said two feed points for holding a frequency response to said slotted coaxial antenna stable.
Dependencies are inferred from the claim text.