US5187490A
Expired / Lapsed
US
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Stripline patch antenna with slot plate
Assignee: Resonac Corp
•
Filing: 1992-01-17
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Granted: 1993-02-16
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Expires: 2012-01-17
Abstract
Abstract A stripline patch antenna having a slot plate which is capable of obtaining higher antenna gain, while reducing the loss due to the feed lines. The antenna includes at least one radiating element for transmitting and receiving radio waves; a feed line for transmitting signals to and from the radiating element; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate, having a plurality of slots more numerous than the radiating element. The triplate substrate can be adapted to this antenna. A plurality of antenna units so constructed can be arranged in array such that at least one of the slots of each antenna unit is shared with a neighboring antenna unit.
Inventors
- 👤 Masahiko Ohta
- 👤 Kazuo Kaneko
- 👤 Hiroyuki Iyama
- 👤 Seizi Kado
- 👤 Mitisuru Hirao
- 👤 Hironori Ishizaka
- 👤 Kenji Ohmaru
- 👤 Takao Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:27
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/0006; H01Q21/0075; H01Q21/0081; H01Q21/06; H01Q21/061; H01Q21/064
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
101 words
A stripline patch type antenna, comprising: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate, covering over the radiating element means, and having more than four slots, all of the slots on the slot plate being arranged at regular intervals on a single circular line centered around a position directly above the radiating element means.
Claim 2
Dependent Claim
101 words
A stripline patch type antenna, comprising: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate, covering over the radiating element means, and having more than four slots, all of the slots on the slot plate being arranged at regular intervals on a single circular line centered around a position directly above the radiating element means.
Claim 3
Dependent Claim
26 words
The antenna of claim 1, wherein the slots are arranged on the slot plate symmetrically with respect to said position directly above the radiating element means.
Claim 4
Dependent Claim
19 words
The antenna of claim 1, wherein the radiating element means comprises a metal layer formed on the dielectric substrate.
Claim 5
Dependent Claim
18 words
The antenna of claim 1, wherein the grounding conductor comprises a metal layer formed on the dielectric substrate.
Claim 6
Dependent Claim
13 words
The antenna of claim 1, wherein the dielectric substrate comprises a dielectric film.
Claim 7
Dependent Claim
18 words
The antenna of claim 1, further comprising a dielectric layer between the slot plate and the dielectric substrate.
Claim 8
Dependent Claim
13 words
The antenna of claim 6, wherein the dielectric layer is an air layer.
Claim 9
Dependent Claim
14 words
The antenna of claim 6, wherein the dielectric layer is a foamed material layer.
Claim 10
Dependent Claim
18 words
The antenna of claim 1, further comprising a dielectric layer between the grounding conductor and the dielectric substrate.
Claim 11
Dependent Claim
13 words
The antenna of claim 9, wherein the dielectric layer is an air layer.
Claim 12
Dependent Claim
14 words
The antenna of claim 9, wherein the dielectric layer is a foamed material layer.
Claim 13
Dependent Claim
13 words
The antenna of claim 1, wherein the slot plate comprises a metal plate.
Claim 14
Dependent Claim
18 words
The antenna of claim 1, wherein the slot plate comprises a metal foil attached to a dielectric film.
Claim 15
Dependent Claim
18 words
The antenna of claim 13, wherein the slots are formed by removing appropriate portions of the metal foil.
Claim 16
Dependent Claim
14 words
The antenna of claim 14, wherein the metal foil is above the dielectric film.
Claim 17
Dependent Claim
14 words
The antenna of claim 14, wherein the metal foil is below the dielectric film.
Claim 18
Dependent Claim
27 words
The antenna of claim 13, wherein the slots are formed by removing portions of the metal foil and the dielectric film corresponding to locations of the slots.
Claim 19
Dependent Claim
18 words
The antenna of claim 1, wherein each of the slots is X-shaped and oriented along a different direction.
Claim 20
Dependent Claim
20 words
The antenna of claim 1, wherein the radiating element means is located between the dielectric substrate and the slot plate.
Claim 21
Dependent Claim
20 words
The antenna of claim 1, wherein the radiating element means is located between the dielectric substrate and the grounding conductor.
Claim 22
Dependent Claim
28 words
The antenna of claim 20, further comprising a passive element located between the dielectric substrate and the slot plate at a position directly above the radiating element means.
Claim 23
Dependent Claim
87 words
A stripline patch type antenna, comprising: an antenna substrate member, including: a lower slot plate having a single lower slot; and a dielectric substrate for supporting feed line means for transmitting signals, the feed line means being extended to a position directly below the lower slot and located entirely below the lower slot plate; and a grounding conductor located below the dielectric substrate; and an upper slot plate located above the antenna substrate member and having a plurality of upper slots more numerous than the lower slot.
Claim 24
Dependent Claim
87 words
A stripline patch type antenna, comprising: an antenna substrate member, including: a lower slot plate having a single lower slot; and a dielectric substrate for supporting feed line means for transmitting signals, the feed line means being extended to a position directly below the lower slot and located entirely below the lower slot plate; and a grounding conductor located below the dielectric substrate; and an upper slot plate located above the antenna substrate member and having a plurality of upper slots more numerous than the lower slot.
Claim 25
Dependent Claim
46 words
The antenna of claim 22, wherein one end of the feed line means has two branches which are oriented in directions crossing at 90° with each other and enclosing a region, and where the lower slot is located above the region enclosed by the two branches.
Claim 26
Dependent Claim
32 words
The antenna of claim 23, wherein the two branches of said one end of the feed line means have a length difference equal to a quarter wavelength of signals to be transmitted.
Claim 27
Dependent Claim
114 words
A stripline patch type plane antenna, comprising: a plurality of antenna units arranged in array, each antenna unit including: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate, covering over the radiating element means, and having more than four slots, all of the slots on the slot plate being arranged at regular intervals on a single circular line centered around a position directly above the radiating element means.
Claim 28
Dependent Claim
114 words
A stripline patch type plane antenna, comprising: a plurality of antenna units arranged in array, each antenna unit including: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate, covering over the radiating element means, and having more than four slots, all of the slots on the slot plate being arranged at regular intervals on a single circular line centered around a position directly above the radiating element means.
Claim 29
Dependent Claim
118 words
A stripline patch type antenna, comprising: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate and having more than four slots of identical shape, one of the slots on the slot plate being arranged at a position directly above the radiating element means while remaining ones of the slots on the slot plate being arranged at regular intervals on a circular line centered around the position directly above the radiating element means.
Claim 30
Dependent Claim
118 words
A stripline patch type antenna, comprising: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate and having more than four slots of identical shape, one of the slots on the slot plate being arranged at a position directly above the radiating element means while remaining ones of the slots on the slot plate being arranged at regular intervals on a circular line centered around the position directly above the radiating element means.
Claim 31
Dependent Claim
108 words
A stripline patch type antenna, comprising: an antenna substrate member, including: a lower slot plate having a lower slot; a dielectric substrate for supporting a feed line for transmitting signals, the feed line means being extended to a position directly below the lower slot; and a grounding conductor located below the dielectric substrate; and an upper slot plate located above the antenna substrate member and having a plurality of upper slots more numerous than the lower slot; one end of the feed line means has two branches which are connected to two adjacent sides of a square patch; and the lower slot is located above the square patch.
Claim 32
Dependent Claim
108 words
A stripline patch type antenna, comprising: an antenna substrate member, including: a lower slot plate having a lower slot; a dielectric substrate for supporting a feed line for transmitting signals, the feed line means being extended to a position directly below the lower slot; and a grounding conductor located below the dielectric substrate; and an upper slot plate located above the antenna substrate member and having a plurality of upper slots more numerous than the lower slot; one end of the feed line means has two branches which are connected to two adjacent sides of a square patch; and the lower slot is located above the square patch.
Claim 33
Dependent Claim
128 words
A stripline patch type plane antenna, comprising: a plurality of antenna units arranged in array, each antenna unit including: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate and having more than four slots; wherein the antenna units are arranged such that at least one of the slots of said antenna unit is shared by another one of the said antenna units arranged adjacent to said each antenna unit as one of the slots of said another one of said antenna units.
Claim 34
Dependent Claim
128 words
A stripline patch type plane antenna, comprising: a plurality of antenna units arranged in array, each antenna unit including: a single radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the radiating element means; a dielectric substrate for supporting the radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; and a slot plate located above the dielectric substrate and having more than four slots; wherein the antenna units are arranged such that at least one of the slots of said antenna unit is shared by another one of the said antenna units arranged adjacent to said each antenna unit as one of the slots of said another one of said antenna units.
Claim 35
Dependent Claim
68 words
The antenna of claim 28, wherein said each antenna unit has its respective slots arranged at regular intervals on a circle centered around the position directly above its respective radiating element means, and wherein the slots of said each antenna unit shared by another one of said antenna units are located at intersections of circles for said each antenna unit and said another one of said antenna units.
Claim 36
Dependent Claim
53 words
The antenna of claim 28, wherein said each antenna unit has its respective slots arranged along a rectangle, and wherein the slots of said each antenna unit shared by another one of said antenna units are located on corners of said each antenna unit shared with said another one of said antenna units.
Claim 37
Dependent Claim
53 words
The antenna of claim 28, wherein each said antenna unit has its respective slots arranged along a rectangle, and wherein the slots of each said antenna unit shared by another one of said antenna units are located on sides of said each antenna unit shared with said another one of said antenna units.
Claim 38
Dependent Claim
131 words
A stripline patch type antenna, comprising: a central radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the central radiating element means; a dielectric substrate for supporting the central radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; a slot plate located above the dielectric substrate and having more than four slots, one of the slots on the plate being arranged at a position directly above the central radiating element means and remaining ones of the slots on the slot plate being arranged at regular intervals on a single circular line centered around a position directly above the central radiating element means; and additional radiating element means which is located below one of the slots.
Claim 39
Dependent Claim
131 words
A stripline patch type antenna, comprising: a central radiating element means for transmitting and receiving radio waves; feed line means for transmitting signals to and from the central radiating element means; a dielectric substrate for supporting the central radiating element means and the feed line means; a grounding conductor located below the dielectric substrate; a slot plate located above the dielectric substrate and having more than four slots, one of the slots on the plate being arranged at a position directly above the central radiating element means and remaining ones of the slots on the slot plate being arranged at regular intervals on a single circular line centered around a position directly above the central radiating element means; and additional radiating element means which is located below one of the slots.
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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) | 1996-02-16 | 1996-08-17 | 1997-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-16 | 2000-08-17 | 2001-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-16 | 2004-08-17 | 2005-02-16 | $7700.00 | Window Closed / Lapsed |