Patent US5278569A successfully refreshed from Google Patents.
US5278569A
Expired / Lapsed
US
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Plane antenna with high gain and antenna efficiency
Assignee: Resonac Corp
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Filing: 1992-08-17
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Granted: 1994-01-11
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Expires: 2012-08-17
Abstract
Abstract A plane antenna with high gain and antenna efficiency. The antenna includes an antenna unit comprising: a first dielectric body; a first grounding conductor body provided on a lower side of the first dielectric body; a current supply line in a form of a strip line provided on an upper side of the first dielectric body; a patch shaped radiative element provided on the upper side of the first dielectric body at an end of the current supply line; a second dielectric body formed on the upper side of the first dielectric body over the radiative element and the current supply line; and a second grounding conductor body provided on the upper side of the second dielectric body, which has a slot at a position located directly above the radiative element; wherein the radiative elements and the slots of the plane antenna are arranged in a planar array with a constant interval in two orthogonal directions, where the constant interval has a value equal to 0.72 to 0.93 or more preferably 0.85 to 0.93 times a wavelength corresponding to a central frequency of a frequency band for waves to be used.
Inventors
- 👤 Masahiko Ohta
- 👤 Hironori Ishizaka
- 👤 Hisayoshi Mizugaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:10
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/065
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
223 words
A plane antenna formed by a plurality of antenna units arranged in an array, each of the antenna units comprising; a first dielectric body; a first grounding conductor body provided on a lower side of the first dielectric body; a current supply line in the form of a strip line provided on an upper side of the first dielectric body; a patch shaped radiative element provided on the upper side of the first dielectric body at an end of the current supply line; a second dielectric body formed on the upper side of the first dielectric body over the radiative element and the current supply line; a second grounding conductor body provided on the upper side of the second dielectric body, which has a slot at a position located directly above the radiative element; and wherein the radiative elements and the slots of the plane antenna are arranged in a planar array with a constant interval in two orthogonal directions and each radiative elements is in radiative communication with all the slots of the plane antenna through the second dielectric body which is commonly provided for all the antenna units of the plane antenna, where the constant interval has a value equal to 0.72 to 0.93 times a wavelength corresponding to a central frequency of a frequency band for waves to be used.
Claim 2
Dependent Claim
223 words
A plane antenna formed by a plurality of antenna units arranged in an array, each of the antenna units comprising; a first dielectric body; a first grounding conductor body provided on a lower side of the first dielectric body; a current supply line in the form of a strip line provided on an upper side of the first dielectric body; a patch shaped radiative element provided on the upper side of the first dielectric body at an end of the current supply line; a second dielectric body formed on the upper side of the first dielectric body over the radiative element and the current supply line; a second grounding conductor body provided on the upper side of the second dielectric body, which has a slot at a position located directly above the radiative element; and wherein the radiative elements and the slots of the plane antenna are arranged in a planar array with a constant interval in two orthogonal directions and each radiative elements is in radiative communication with all the slots of the plane antenna through the second dielectric body which is commonly provided for all the antenna units of the plane antenna, where the constant interval has a value equal to 0.72 to 0.93 times a wavelength corresponding to a central frequency of a frequency band for waves to be used.
Claim 3
Dependent Claim
39 words
The plane antenna of claim 1, wherein the constant interval of the planar array has a value equal to 0.85 to 0.93 times the wavelength corresponding to the central frequency of the frequency band for waves to be used.
Claim 4
Dependent Claim
47 words
The plane antenna of claim 1, wherein the slot of each antenna unit is in a square shape having a length of each side equal to 0.48 to 0.65 times the wavelength corresponding to the central frequency of the frequency band for the waves to be used.
Claim 5
Dependent Claim
45 words
The plane antenna of claim 1, wherein the slot of each antenna unit is in a circular disk shape having a diameter equal to 0.48 to 0.65 times the wavelength corresponding to the central frequency of the frequency band for the waves to be used.
Claim 6
Dependent Claim
48 words
The plane antenna of claim 1, wherein each antenna unit further comprises: a third dielectric body formed on the upper side of the second grounding conductor body; and a passive element provided on the upper side of the third dielectric body at a position directly above the slot.
Claim 7
Dependent Claim
20 words
The plane antenna of claim 1, wherein the radiative elements of the plane antenna are arranged in units of pairs.
Claim 8
Dependent Claim
240 words
An array antenna formed by a plurality of plane antennas arranged in an array, each of the plane antennas being formed by a plurality of antenna units arranged in an array, each of the antenna units comprising: a first dielectric body; a first grounding conductor body provided on a lower side of the first dielectric body; a current supply line in the form of a strip line provided on an upper side of the first dielectric body; a patch shaped radiative element provided on the upper side of the first dielectric body at an end of the current supply line; a second dielectric body formed on the upper side of the first dielectric body over the radiative element and the current supply line; a second grounding conductor body provided on the upper side of the second dielectric body, which has a slot at a position located directly above the radiative element; and wherein the radiative elements and the slots of the plane antenna are arranged in a plannar array with a constant interval in two orthogonal directions and each radiative element is in radiative communication with all the slots of the plane antenna through the second dielectric body which is commonly provided for all the antenna units of the plane antenna, where the constant interval has a value equal to 0.72 to 0.93 times a wavelength corresponding to a central frequency of a frequency band for waves to be used.
Claim 9
Dependent Claim
240 words
An array antenna formed by a plurality of plane antennas arranged in an array, each of the plane antennas being formed by a plurality of antenna units arranged in an array, each of the antenna units comprising: a first dielectric body; a first grounding conductor body provided on a lower side of the first dielectric body; a current supply line in the form of a strip line provided on an upper side of the first dielectric body; a patch shaped radiative element provided on the upper side of the first dielectric body at an end of the current supply line; a second dielectric body formed on the upper side of the first dielectric body over the radiative element and the current supply line; a second grounding conductor body provided on the upper side of the second dielectric body, which has a slot at a position located directly above the radiative element; and wherein the radiative elements and the slots of the plane antenna are arranged in a plannar array with a constant interval in two orthogonal directions and each radiative element is in radiative communication with all the slots of the plane antenna through the second dielectric body which is commonly provided for all the antenna units of the plane antenna, where the constant interval has a value equal to 0.72 to 0.93 times a wavelength corresponding to a central frequency of a frequency band for waves to be used.
Claim 10
Dependent Claim
39 words
The plane antenna of claim 7, wherein the constant interval of the planar array has a value equal to 0.85 to 0.93 times the wavelength corresponding to the central frequency of the frequency band for waves to be used.
Claim 11
Dependent Claim
47 words
The array antenna of claim 7, wherein the slot of each antenna unit is in a square shape having a length of each side equal to 0.48 to 0.65 times the wavelength corresponding to the central frequency of the frequency band for the waves to be used.
Claim 12
Dependent Claim
45 words
The array antenna of claim 7, wherein the slot of each antenna unit is in a circular disk shape having a diameter equal to 0.48 to 0.65 times the wavelength corresponding to the central frequency of the frequency band for the waves to be used.
Claim 13
Dependent Claim
48 words
The array antenna of claim 7, wherein each antenna unit further comprises: a third dielectric body formed on the upper side of the second grounding conductor body; and a passive element provided on the upper side of the third dielectric body at a position directly above the slot.
Claim 14
Dependent Claim
20 words
The array antenna of claim 7, wherein the radiative elements of the plane antenna are arranged in units of pairs.
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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) | 1997-01-10 | 1997-07-12 | 1998-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-10 | 2001-07-12 | 2002-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-10 | 2005-07-12 | 2006-01-11 | $7700.00 | Window Closed / Lapsed |