US4827276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave antenna
Assignee: Sony Corp
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Filing: 1987-06-04
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Granted: 1989-05-02
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Expires: 2007-06-04
Abstract
Abstract A planar microwave antenna of the suspended line feed type has a substrate sandwiched between a pair of conductive plates, each of the plates having aligned openings defining radiation elements. The substrate is held in place by holding portions surrounding the openings and wide grooves between the openings house a plurality of parallel suspended lines.
Inventors
- 👤 Keiji Fukuzawa
- 👤 Fumihiro Ito
- 👤 Junichi Kajikuri
- 👤 Shinobu Tsurumaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:27
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/064; H01Q21/0006; H01Q21/0075; H01Q21/0081; H01Q21/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
A suspended line feed type planar array antenna having a substrate sandwiched between a pair of conductive plates, a plurality of suspended lines on said substrate, each of said plates having a plurality of spaced openings defining radiation elements, a plurality of said openings having at least one excitation probe on said substrate, means for connecting signals received at said at least one excitation probe to a suspended line in phase with each other, a holding portion for holding said substrate formed on said conductive plate around the periphery of each of said plurality of openings and a groove portion of wide width formed on said conductive plates between adjacent ones of said openings, said groove portion having a plurality of said suspended lines located in parallel to each other therein.
Claim 2
Dependent Claim
131 words
A suspended line feed type planar array antenna having a substrate sandwiched between a pair of conductive plates, a plurality of suspended lines on said substrate, each of said plates having a plurality of spaced openings defining radiation elements, a plurality of said openings having at least one excitation probe on said substrate, means for connecting signals received at said at least one excitation probe to a suspended line in phase with each other, a holding portion for holding said substrate formed on said conductive plate around the periphery of each of said plurality of openings and a groove portion of wide width formed on said conductive plates between adjacent ones of said openings, said groove portion having a plurality of said suspended lines located in parallel to each other therein.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 1, wherein said openings are circular and said holding portion around each of said openings for holding said substrate is annular.
Claim 4
Dependent Claim
23 words
Apparatus according to claim 1, wherein said conductive plates have a rectangular shape and have said holding portion on the outer pheripheries thereof.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 1, wherein said means for connecting comprises suspended line connecting means for connecting a plurality of said excitation probes to a feed point.
Claim 6
Dependent Claim
27 words
Apparatus according to claim 4, wherein said feed point is located at an aperture, and another holding portion of said conductive plate is provided around said aperture.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 4, wherein a filter is provided between said feed portion and said suspended line.
Claim 8
Dependent Claim
17 words
Apparatus according to claim 6, wherein said filter is a bandpass filter of a suspended line configuration.
Claim 9
Dependent Claim
24 words
Apparatus according to claim 1, including a line width of a portion where a single suspended line is independently provided has an increased width.
Claim 10
Dependent Claim
49 words
Appratus according to claim 1, further comprising a feed portion of a waveguide structure provided on the rear surface of said antenna and a converter structure attached to the rear surface of said antenna, said feed portion and said converter being integrally formed into a thin single physical unit.
Claim 11
Dependent Claim
15 words
Apparatus according to claim 9, wherein said feed portion is located centrally on the array.
Claim 12
Dependent Claim
144 words
A suspended line feed type planar array antenna having a substrate sandwiched between a pair of conductive plates, a plurality of suspended lines on said substrate, each of said plates having a plurality of spaced openings defining radiation elements, a plurality of said openings have a pair of excitation probes formed perpendicular to each other in a common plane, on said substrate, in alignment with said openings, means for connecting signals received at said pair of excitation probes to a suspended line in phase with each other, a holding portion for holding said substrate formed on said conductive plate around the periphery of each of said plurality of openings, and a groove portion of wide width formed on said conductive plates between adjacent ones of said openings, said groove portion having a plurality of said suspended lines located in parallel to each other therein.
Claim 13
Dependent Claim
144 words
A suspended line feed type planar array antenna having a substrate sandwiched between a pair of conductive plates, a plurality of suspended lines on said substrate, each of said plates having a plurality of spaced openings defining radiation elements, a plurality of said openings have a pair of excitation probes formed perpendicular to each other in a common plane, on said substrate, in alignment with said openings, means for connecting signals received at said pair of excitation probes to a suspended line in phase with each other, a holding portion for holding said substrate formed on said conductive plate around the periphery of each of said plurality of openings, and a groove portion of wide width formed on said conductive plates between adjacent ones of said openings, said groove portion having a plurality of said suspended lines located in parallel to each other therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |