US5124714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual slot planar mobile antenna fed with coaxial cables
Assignee: Harada Industry Co Ltd
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Filing: 1989-11-02
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Granted: 1992-06-23
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Expires: 2009-11-02
Abstract
Abstract A plane antenna for automobiles including a peripheral conducting surface, a first inner conducting surface provided in the peripheral conducting surface with a space in between, a second inner conducting surface provided in the first inner conducting surface with a space in between. A core conductor of a first coaxial line is connected to the first inner conducting surface and an outer skin of the first coaxial line is connected to the peripheral conducting surface, and a core conductor of a second coaxial line is connected to the second inner conducting surface and an outer skin of the second coaxial line is connected to the first inner conducting surface. The second coaxial line can be divided into two sections so that these sections are inductively connected to each other by coils.
Inventors
- 👤 Takuji Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:32
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/38; G06F9/3867; G06F9/3873; H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3275; H01Q13/00; H01Q13/10; H01Q21/00; H01Q21/28; H01Q5/00; H01Q5/40; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0464
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A plane antenna for automobiles comprising: a peripheral conducting surface; a first inner conducting surface provided coplanar with and within said peripheral conducting surface with a space in between; a second inner conducting surface provided coplanar with and within said first inner conducting surface with a space in between; a first coaxial line, a core conductor of said first coaxial line being connected to said first inner conducting surface and an outer skin of said first coaxial line being connected to said peripheral outer conducting surface; and a second coaxial line, a core conductor of said second coaxial line being connected to said second inner conducting surface and an outer skin of said second coaxial line being connected to said first inner conducting surface.
Claim 2
Dependent Claim
124 words
A plane antenna for automobiles comprising: a peripheral conducting surface; a first inner conducting surface provided coplanar with and within said peripheral conducting surface with a space in between; a second inner conducting surface provided coplanar with and within said first inner conducting surface with a space in between; a first coaxial line, a core conductor of said first coaxial line being connected to said first inner conducting surface and an outer skin of said first coaxial line being connected to said peripheral outer conducting surface; and a second coaxial line, a core conductor of said second coaxial line being connected to said second inner conducting surface and an outer skin of said second coaxial line being connected to said first inner conducting surface.
Claim 3
Dependent Claim
136 words
A plane antenna for automobiles comprising: a peripheral conducting surface; a first inner conducting surface provided within said peripheral conducting surface with a space in between; a second inner conducting surface provided within said first inner conducting surface with a space in between; a first coaxial line, a core conductor of said first coaxial line being connected to said first inner conducting surface and an outer skin of said first coaxial line being connected to said peripheral conducting surface; and a second coaxial line, a core conductor of said second coaxial line being connected to said second inner conducting surface and an outer skin of said second coaxial line being connected to said first inner conducting surface, said second coaxial line further being divided into two sections which are inductively connected to each other with coils.
Claim 4
Dependent Claim
136 words
A plane antenna for automobiles comprising: a peripheral conducting surface; a first inner conducting surface provided within said peripheral conducting surface with a space in between; a second inner conducting surface provided within said first inner conducting surface with a space in between; a first coaxial line, a core conductor of said first coaxial line being connected to said first inner conducting surface and an outer skin of said first coaxial line being connected to said peripheral conducting surface; and a second coaxial line, a core conductor of said second coaxial line being connected to said second inner conducting surface and an outer skin of said second coaxial line being connected to said first inner conducting surface, said second coaxial line further being divided into two sections which are inductively connected to each other with coils.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |