Wideband end-fire array
First Claim
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1. A wideband end-fire array of radiating elements, comprising:
- a plurality of radiating elements arranged end-to-end along a common end-fire axis and spaced apart along the axis by a separation distance, each element comprising a flared notch radiating element; and
a true-time-delay corporate feed network connected to the radiating elements, wherein time delay differences in contributions by the individual radiating elements to a composite array signal due to the separation of the elements along the axis are equalized by the corporate feed network.
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Abstract
A wideband end-fire array including columns or sub-arrays of flared notch radiating elements spaced along an end-fire axis and fed by a true-time-delay corporate feed network. The feed network includes a corporate feed manifold and a plurality of cables connected between a respective manifold port and a balun comprising a corresponding radiating element. The plurality of cables have corresponding electrical line lengths adapted to provide progressive time delays to signals carried between the radiating elements and the feed manifold so as to equalize the time delays due to spacing of the elements along the axis.
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Citations
13 Claims
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1. A wideband end-fire array of radiating elements, comprising:
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a plurality of radiating elements arranged end-to-end along a common end-fire axis and spaced apart along the axis by a separation distance, each element comprising a flared notch radiating element; and a true-time-delay corporate feed network connected to the radiating elements, wherein time delay differences in contributions by the individual radiating elements to a composite array signal due to the separation of the elements along the axis are equalized by the corporate feed network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wideband end-fire array of radiating elements for operation over a frequency band of operation, comprising:
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a plurality of radiating elements arranged end-to-end along a common end-fire axis, each element comprising a flared notch radiating element, the radiating elements spaced by one-quarter wavelength at an operating frequency within the band of operation; and a true-time-delay corporate feed network connected to the radiating elements, said corporate feed network comprises a corporate feed manifold and a plurality of cables, said cables connected between a respective manifold port and a balun comprising a corresponding radiating element, and wherein said plurality of cables have corresponding electrical line lengths adapted to provide progressive time delays to signals carried between said radiating elements and the feed manifold to equalize signal propagation delays along the array axis. - View Dependent Claims (11, 12, 13)
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Specification