US4853703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microstrip antenna with stripline and amplifier
Assignee: Aisin Corp
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Filing: 1987-03-17
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Granted: 1989-08-01
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Expires: 2007-03-17
Abstract
Abstract A high frequency amplifier is mounted in the immediate vicinity of a feeder of a microstrip antenna. A microstrip antenna includes a dielectric member and a grounded conductor member which is applied thereto. A second dielectric member is disposed on the side of the grounded conductor member which faces away from the dielectric member, and the high frequency amplifier is mounted on the surface of the second dielectric member which faces away from the grounded conductor member, and is connected to the feeder of the microstrip antenna. A transmission distance between the feeder and the high frequency amplifier, which represents an initial amplifier stage, is greatly reduced, thus drastically reducing disturbances caused by external noises and improving the noise figure of a receiving equipment.
Inventors
- 👤 Yuichi Murakami
- 👤 Kiyokazu Ieda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:34
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/247; H01Q9/00; H01Q9/04; H01Q9/0407
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
An antenna device comprising: a microstrip antenna formed on a first dielectric member, said microstrip antenna including feeder means and further including a radiating conductor member disposed on a first major surface of said first dielectric member, and a grounded conductor member disposed on an opposing major surface of said first dielectric member; a second dielectric member disposed on an opposite side of said grounded conductor member from said first dielectric member, such that said grounded conductor member is sandwiched between first and second dielectric members; and a high frequency circuit mounted on a surface of said second dielectric member which faces away from said grounded conductor member, said high frequency circuit comprising a high frequency amplifier and a strip conductor member constituting a strip line with said second dielectric member and said grounded conductor member for electrically matching said high frequency amplifier with said feeder means of said microstrip antenna.
Claim 2
Dependent Claim
151 words
An antenna device comprising: a microstrip antenna formed on a first dielectric member, said microstrip antenna including feeder means and further including a radiating conductor member disposed on a first major surface of said first dielectric member, and a grounded conductor member disposed on an opposing major surface of said first dielectric member; a second dielectric member disposed on an opposite side of said grounded conductor member from said first dielectric member, such that said grounded conductor member is sandwiched between first and second dielectric members; and a high frequency circuit mounted on a surface of said second dielectric member which faces away from said grounded conductor member, said high frequency circuit comprising a high frequency amplifier and a strip conductor member constituting a strip line with said second dielectric member and said grounded conductor member for electrically matching said high frequency amplifier with said feeder means of said microstrip antenna.
Claim 3
Dependent Claim
21 words
An antenna device according to claim 1, in which said high frequency amplifier includes input matching means and output matching means.
Claim 4
Dependent Claim
23 words
An antenna device according to claim 2, in which said input matching means is connected to the feeder means of said microstrip antenna.
Claim 5
Dependent Claim
32 words
An antenna device according to claim 3, in which said input matching means comprises a strip line including a first conductor line member, said second dielectric member and said grounded conductor member.
Claim 6
Dependent Claim
39 words
An antenna device according to claim 4, in which said input matching means comprises a d.c. blocking means and is connected to the feeder means of said microstrip antenna through an electrical conduction path provided by said blocking means.
Claim 7
Dependent Claim
15 words
An antenna device according to claim 5, in which said blocking means comprises a capacitor.
Claim 8
Dependent Claim
32 words
An antenna device according to claim 2, in which said output matching means comprises a strip line including a second conductor line member, said second dielectric member and said grounded conductor member.
Claim 9
Dependent Claim
174 words
An antenna device comprising: a microstrip antenna formed on a first dielectric member, said microstrip antenna including a radiating conductor member disposed on a first major surface of said first dielectric member, and a grounded conductor member disposed on an opposing major surface of said first dielectric member; a second dielectric member disposed on an opposite side of the grounded conductor member form said first dielectric member, such that said grounded conductor member is sandwiched between said first and second dielectric members; and a high frequency circuit mounted on a surface of said second dielectric member which faces away from said grounded conductor member, said high frequency circuit being electrically connected to a feeder of said microstrip antenna, such that an electrical conduction path is provided between said high frequency circuit and said radiating conductor member, wherein said high frequency circuit comprises a high frequency amplifier and a strip conductor member constituting a strip line with said second dielectric member of electrically matching said high frequency amplifier with said feeder of said microstrip antenna.
Claim 10
Dependent Claim
174 words
An antenna device comprising: a microstrip antenna formed on a first dielectric member, said microstrip antenna including a radiating conductor member disposed on a first major surface of said first dielectric member, and a grounded conductor member disposed on an opposing major surface of said first dielectric member; a second dielectric member disposed on an opposite side of the grounded conductor member form said first dielectric member, such that said grounded conductor member is sandwiched between said first and second dielectric members; and a high frequency circuit mounted on a surface of said second dielectric member which faces away from said grounded conductor member, said high frequency circuit being electrically connected to a feeder of said microstrip antenna, such that an electrical conduction path is provided between said high frequency circuit and said radiating conductor member, wherein said high frequency circuit comprises a high frequency amplifier and a strip conductor member constituting a strip line with said second dielectric member of electrically matching said high frequency amplifier with said feeder of said microstrip antenna.
References Cited (Backward Citations)
US3508269A
Cited
US4054874A
Cited
US4203116A
Cited
US4383260A
Cited
US4276558A
Cited
US4491809A
Cited
JPS5877306A
Cited
JPS5890810A
Cited
JPS58137314A
Cited
JPS5952708A
Cited
JPS5977701A
Cited
JPS5991016A
Cited
JPS59112701A
Cited
JPS59171206A
Cited
US4612512A
Cited
US4761654A
Cited
US4724443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |