Patent EP0427479A2 successfully refreshed from Google Patents.
EP0427479A2
Expired / Lapsed
EP
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Planar array antenna
Assignee: Sony Corp
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Filing: 1990-11-02
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Granted: —
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Expires: 2010-11-02
Abstract
Abstract A planar array antenna comprises an upper plate (34) having a plurality of holes, a lower plate (30), and a circuit board (32) having printed patterns of a plurality of array elements (32 min ) and located between the upper plate (34) and the lower plate (30), wherein the lower plate (30) has concave regions (30 min ) formed at positions corresponding to the positions of the plurality of holes of the upper plate (34).
Inventors
- 👤 Fumihiro C/O Patents Division Ito
- 👤 Keiji C/O Patents Division Fukuzawa
- 👤 Shinobu C/O Patents Division Tsurumaru
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:14
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0428; H01Q21/0006; H01Q21/0075; H01Q21/061; H01Q21/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A planar array antenna comprising: an upper plate (34) having a plurality of holes; a lower plate (30); and a circuit board (32) having printed patterns of a plurality of array elements (32′) and being located between said upper plate (34) and said lower plate (30), wherein said lower plate (30) has concave regions (30′) formed at the positions corresponding to the positions of said plurality of holes of said upper plate (34).
Claim 2
Dependent Claim
73 words
A planar array antenna comprising: an upper plate (34) having a plurality of holes; a lower plate (30); and a circuit board (32) having printed patterns of a plurality of array elements (32′) and being located between said upper plate (34) and said lower plate (30), wherein said lower plate (30) has concave regions (30′) formed at the positions corresponding to the positions of said plurality of holes of said upper plate (34).
Claim 3
Dependent Claim
18 words
An antenna according to claim 1 wherein said lower plate (30) is thicker than said upper plate (34).
Claim 4
Dependent Claim
19 words
An antenna according to claim 1 wherein said concave regions (30A) are made by pressforming said lower plate (30).
Claim 5
Dependent Claim
19 words
An antenna according to claim 3 wherein said concave regions (30′) are made by machining said lower plate (30).
Claim 6
Dependent Claim
25 words
An antenna according to claim 2 wherein the thickness of said upper plate (34) is nearly the same as that of said lower plate (30).
Claim 7
Dependent Claim
21 words
An antenna according to claim 1 wherein said patterns of the plurality of array elements (32′) are connected with each other.
Claim 8
Dependent Claim
21 words
An antenna according to claim 6 wherein said patterns are connected to form a specific direction circular polarization of electromagnetic wave.
References Cited (Backward Citations)
No citation records indexed.
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