Ultra wide bandwidth planar antenna
First Claim
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1. A planar antenna, comprising:
- a dielectric substrate having opposite first and second surfaces;
an elliptical radiating element formed on said first surface of said dielectric substrate, having major and minor axes, and formed with a pair of three-sided holes therethrough, each of which is defined by a hole-defining wall that has a side;
a feeding element formed on said first surface of said dielectric substrate, coupled to said radiating element at one end of the major axis of said radiating element; and
a grounding element formed on said second surface of said dielectric substrate, and coupled to said feeding element;
wherein said three-sided holes are disposed on opposite sides of the major axis of said radiating element, andwherein each said side of each said hole-defining wall is parallel to the major axis.
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Abstract
A planar antenna, which is operable within the ultra wide bandwidth, includes a dielectric substrate, an elliptical radiating element, a feeding element, and a grounding element. The dielectric substrate has opposite first and second surfaces. The elliptical radiating element is formed on the first surface of the dielectric substrate, and has major and minor axes. The ratio of the major axis to the minor axis is between 1.25 and 1.7. The feeding element is formed on the first surface of the dielectric substrate, and is coupled to the radiating element. The grounding element is formed on the second surface of the dielectric substrate, and is coupled to the feeding element.
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Citations
21 Claims
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1. A planar antenna, comprising:
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a dielectric substrate having opposite first and second surfaces; an elliptical radiating element formed on said first surface of said dielectric substrate, having major and minor axes, and formed with a pair of three-sided holes therethrough, each of which is defined by a hole-defining wall that has a side; a feeding element formed on said first surface of said dielectric substrate, coupled to said radiating element at one end of the major axis of said radiating element; and a grounding element formed on said second surface of said dielectric substrate, and coupled to said feeding element; wherein said three-sided holes are disposed on opposite sides of the major axis of said radiating element, and wherein each said side of each said hole-defining wall is parallel to the major axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A planar antenna, comprising:
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a dielectric substrate having opposite first surface and second surface; an elliptical radiating element formed on said first surface of said dielectric substrate, and having major and minor axes; a feeding element formed on said first surface of said dielectric substrate, and coupled to said radiating element at one end of the major axis of said radiating element; and a grounding element formed on said second surface of said dielectric substrate, coupled to said feeding element, and generally rectangular, said grounding element comprising; a short side, a long side that is parallel to and shorter than the minor axis of said radiating element, first and second corners that are proximate to said radiating element, and third and fourth corners that are distal from said radiating element, said grounding element being formed with cutouts at said first and fourth corners thereof, and a pair of three-sided grooves, each of which is disposed adjacent to a respective one of said second and third corners of said grounding element. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification