Multi-element planar array antenna
First Claim
1. A multi-element planar array antenna comprising:
- a substrate having a first and a second principal surface;
a conductor formed on said first principal surface;
a first and a second slot line formed in said conductor, and intersecting each other;
a first and a second microstrip line formed on said second principal surface, and traversing said first slot line respectively at positions corresponding to both end sides of said first slot line;
a third and a fourth microstrip line formed on said second principal surface, and traversing said second slot line respectively at positions corresponding to both end sides of said second slot line;
a first antenna element electromagnetically coupled to one end of said first microstrip line and to one end of said third microstrip line through said substrate;
a second antenna element electromagnetically coupled to one end of said second microstrip line and to the other end of said third microstrip line through said substrate;
a third antenna element electromagnetically coupled to the other end of said second microstrip line and to one end of said fourth microstrip line through said substrate; and
a fourth antenna element electromagnetically coupled to the other end of said first microstrip line and to the other end of said fourth microstrip line through said substrate, wherein each of said antenna elements is a slot line antenna element formed on said first principal surface and capable of being excited in two directions.
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Accused Products
Abstract
A multi-element planar array antenna has a substrate made of a dielectric material or the like; a planar conductor formed on a first principal surface of the substrate; a first and a second slot line formed in the conductor and intersecting each other; a first and a second microstrip line formed on a second principal surface of the substrate, and traversing the first slot line respectively at positions corresponding to both end sides of the first slot line; a third and a fourth microstrip line formed on the second principal surface, and traversing the second slot line respectively at positions corresponding to both end sides of the second slot line; and four slot line antenna elements formed on the first principal surface respectively in intersection regions between both end sides of the first and second microstrip lines and both end sides of the third and fourth microstrip lines.
33 Citations
22 Claims
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1. A multi-element planar array antenna comprising:
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a substrate having a first and a second principal surface;
a conductor formed on said first principal surface;
a first and a second slot line formed in said conductor, and intersecting each other;
a first and a second microstrip line formed on said second principal surface, and traversing said first slot line respectively at positions corresponding to both end sides of said first slot line;
a third and a fourth microstrip line formed on said second principal surface, and traversing said second slot line respectively at positions corresponding to both end sides of said second slot line;
a first antenna element electromagnetically coupled to one end of said first microstrip line and to one end of said third microstrip line through said substrate;
a second antenna element electromagnetically coupled to one end of said second microstrip line and to the other end of said third microstrip line through said substrate;
a third antenna element electromagnetically coupled to the other end of said second microstrip line and to one end of said fourth microstrip line through said substrate; and
a fourth antenna element electromagnetically coupled to the other end of said first microstrip line and to the other end of said fourth microstrip line through said substrate, wherein each of said antenna elements is a slot line antenna element formed on said first principal surface and capable of being excited in two directions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
a second substrate bonded on said second principal surface, said second substrate having one principal surface opposing said second principal surface; and
a feed microstrip line routed on the other principal surface of said second substrate, and traversing said intersection such that said feed microstrip line is electromagnetically coupled to a pair of corners at said intersection.
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20. The antenna according to claim 4, further comprising:
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a second substrate bonded on said second principal surface, said second substrate having one principal surface opposing said second principal surface; and
a first to a fourth feed microstrip line formed on the other principal surface of said second substrate such that said microstrip lines overlap said first and second slot lines across said intersection.
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21. A multi-element planar array antenna comprising:
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a substrate having a first and a second principal surface;
a conductor formed on said first principal surface;
two or more planar antenna units formed on said substrate, said each planar antenna unit comprising a first and a second slot line formed in said conductor, and intersecting each other;
a first and a second microstrip line formed on said second principal surface, and traversing said first slot line respectively at positions corresponding to both end sides of said first slot line;
a third and a fourth microstrip line formed on said second principal surface; and
traversing said second slot line respectively at positions corresponding to both end sides of said second slot line;
four slot line antenna elements formed respectively in intersection regions between both end sides of said first and second microstrip lines and both end sides of said third and fourth microstrip lines, respectively, in two directions on said second principal surface; and
a feed position at an intersection of said first and second slot lines;
a second substrate bonded on said second principal surface, said second substrate having one principal surface opposing said second principal surface; and
a feed microstrip(line routed on the other principal surface of said second substrate, and traversing a pair of said intersections, wherein said antenna elements on said each planar antenna set are excited in phase. - View Dependent Claims (22)
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Specification