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US 6,208,298 B1Granted
Planar array antenna
AssigneeHarada Industry Co., Ltd.
InventorsShigeru Uchino, Moriyoshi Kawasaki
Life of this patent
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Abstract
A planar array antenna includes a ground plate formed of metallic material, a plurality of patch antenna elements supported on the ground plate by insulation spacers, respectively, and arrayed at a predetermined pitch, and a feed line for coupling adjacent antenna elements of the plurality of patch antenna elements.
Claims1
A planar array antenna comprising:
- a ground plate formed of metallic material;
- a plurality of patch antenna elements, each of said elements having a central part locally supported on the ground plate by a single insulation spacer formed of a cylinder;
- and
- a feed line extending between and coupling two patch antenna elements,
- wherein when a wavelength of transmitted/received wave is λ, a length of each of the plurality of patch antenna elements is set to λ/2, and the patch antenna elements are arrayed at a pitch of λ.
2 more elements
Dependencies are inferred from the claim text.