Wideband antenna
First Claim
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1. A wideband antenna, comprising:
- a pair of planar, conductive antenna elements; and
a pair of planar, conductive band-like feeding legs, wherein the antenna elements are arranged symmetrically with respect to a symmetric axis, the band-like feeding legs are arranged symmetrically with respect to the symmetric axis, with a narrow space interposed between the band-like feeding legs, the band-like feeding legs are connected to adjacent portions of the antenna elements at which the antenna elements are closest to each other, and a width of each of the band-like feeding legs is increased in a direction away from the connecting portion, and wherein an outer edge portion of each of the antenna elements that is farthest from the connecting part forms part of an arc, each of the adjacent portions includes part of a phantom arc, and each of the legs is joined to the corresponding antenna element along a direction of a tangent line coming into contact with the phantom arc of the adjacent portion, thereby forming a joint portion.
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Abstract
Disclosed is an antenna capable of receiving a very wide band of frequencies. The antenna includes a pair of antenna elements and a pair of feeding legs, which are arranged symmetrically with respect to a line L, with a narrow space G in between.
27 Citations
9 Claims
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1. A wideband antenna, comprising:
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a pair of planar, conductive antenna elements; and a pair of planar, conductive band-like feeding legs, wherein the antenna elements are arranged symmetrically with respect to a symmetric axis, the band-like feeding legs are arranged symmetrically with respect to the symmetric axis, with a narrow space interposed between the band-like feeding legs, the band-like feeding legs are connected to adjacent portions of the antenna elements at which the antenna elements are closest to each other, and a width of each of the band-like feeding legs is increased in a direction away from the connecting portion, and wherein an outer edge portion of each of the antenna elements that is farthest from the connecting part forms part of an arc, each of the adjacent portions includes part of a phantom arc, and each of the legs is joined to the corresponding antenna element along a direction of a tangent line coming into contact with the phantom arc of the adjacent portion, thereby forming a joint portion. - View Dependent Claims (2, 3, 4, 5, 6, 8)
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7. A wideband antenna, comprising:
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a pair of planar, conductive antenna elements; and a pair of planar, conductive band-like feeding legs, wherein the antenna elements are arranged symmetrically with respect to a symmetric axis, the band-like feeding legs are arranged symmetrically with respect to the symmetric axis, with a narrow space interposed between the band-like feeding legs, the band-like feeding legs are connected to adjacent portions of the antenna elements at which the antenna elements are closest to each other, an outer edge portion of each of the antenna elements that is farthest from the connecting part forms part of an arc, each of the adjacent portions includes part of a phantom arc, each of the band-like feeding legs is joined to the corresponding antenna element along a direction of a tangent line coming into contact with the phantom arc of the adjacent portion, thereby forming a joint portion, each of the band-like feeding legs includes an outer periphery which is a concave arc, and a width of each of the band-like feeding legs is increased in a direction away from the connecting part. - View Dependent Claims (9)
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Specification