Broadband conformal inclined slotline antenna array
First Claim
1. An antenna array for a missile, said missile characterized by a boresight, the array comprising a plurality of aligned flared notch antenna elements, each said element inclined toward boresight of said missile to improve directivity of said array in the direction of boresight.
1 Assignment
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Accused Products
Abstract
A missile guidance antenna that is conformal to the missile surface, dual-polarized and broadband. Slotline notch array elements (30, 52) are inclined toward boresight for both the E and H-planes. This inclination directs a greater portion of the energy toward the front of the missile. The additional energy directed forward reduces the nullifying effects of the metallic skin on the tangential E-field and enhances the performance of the other polarization. The slotline elements (30, 52) can be packed with spacing close enough to allow for electronic beam steering without creating grating lobes in the field at the highest frequency of operation.
72 Citations
25 Claims
- 1. An antenna array for a missile, said missile characterized by a boresight, the array comprising a plurality of aligned flared notch antenna elements, each said element inclined toward boresight of said missile to improve directivity of said array in the direction of boresight.
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13. A passive radar array system for detecting the location of a target in respect to a missile boresight, comprising:
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a circumferential array of flared notch antenna elements disposed about the circumference of a missile, said elements inclined toward boresight to improve directivity in the direction of boresight; a radar processor responsive to signals received from said array to determine the target location in relation to the missile boresight; and means for selectively coupling the signals from selected ones or groups of ones of said antenna elements to said radar processor to permit the processor to determine the particular antenna having the highest output signal and to form a receiving subarray comprising said particular antenna element and a number of adjacent antenna elements. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. In a missile, a passive radar array system for detecting the location of a target, comprising:
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a longitudinal array of flared notch antenna elements disposed longitudinally along a portion of exterior surface of said missile, said elements inclined toward boresight to improve directivity in the direction of boresight; a radar processor responsive to signals received from said array elements to determine the target location; and means for electronically scanning a beam formed by said longitudinal array to locate said target. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification