System method and apparatus including hybrid spiral antenna
First Claim
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1. A spiral antenna comprising:
- a first polygonal group including first and second antenna loops mutually sharing a first generally polygonal shape, and respectively having segments that increase in length monotonically with respect to an outward direction along respective longitudinal paths of said first and second antenna loops;
a second polygonal group including third and fourth antenna loops mutually sharing a second generally polygonal shape, and respectively having segments that increase in length monotonically with respect to an outward direction along respective longitudinal paths of said third and fourth antenna loops, said second polygonal shape being substantially different from said first polygonal shape, said second polygonal group being disposed generally coaxial to and generally coplanar with said first polygonal group; and
an interpolated loop, said interpolated loop being disposed generally mutually coaxial to and generally coplanar with said first polygonal group and said second polygonal group and being disposed radially between said first polygonal group and said second polygonal group, and having segments that increase and decrease non-monotonically with respect to an outward direction along a longitudinal path of said interpolated loop.
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Abstract
A spiral antenna device includes a plurality of generally polygonal loops. The polygonal loops have respective side counts that decrease progressively as a function of the loop'"'"'s radial distance from a center of the antenna device. The side count may vary between loops as a multiple of a power of two.
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Citations
15 Claims
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1. A spiral antenna comprising:
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a first polygonal group including first and second antenna loops mutually sharing a first generally polygonal shape, and respectively having segments that increase in length monotonically with respect to an outward direction along respective longitudinal paths of said first and second antenna loops; a second polygonal group including third and fourth antenna loops mutually sharing a second generally polygonal shape, and respectively having segments that increase in length monotonically with respect to an outward direction along respective longitudinal paths of said third and fourth antenna loops, said second polygonal shape being substantially different from said first polygonal shape, said second polygonal group being disposed generally coaxial to and generally coplanar with said first polygonal group; and an interpolated loop, said interpolated loop being disposed generally mutually coaxial to and generally coplanar with said first polygonal group and said second polygonal group and being disposed radially between said first polygonal group and said second polygonal group, and having segments that increase and decrease non-monotonically with respect to an outward direction along a longitudinal path of said interpolated loop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification