US5608415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency signal transmission system with conical conductors and bias resistor
Assignee: Individual
•
Filing: 1995-05-30
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Granted: 1997-03-04
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Expires: 2015-05-30
Abstract
Abstract A high-frequency signal transmission system for use as a microwave antenna or filter has a plurality of cascaded conical or planar inner conductors each having a unitary exponential gradient, a pair of circular lines or impedance-matching lines having identical dimensions and connected respectively to opposite ends of the conical or planar inner conductor for providing a predetermined characteristic impedance, and a cylindrical or rectangular tubular outer conductor covering the conical or planar inner conductor and the circular or impedance-matching lines with a cavity defined between the conical or planar inner conductor and the cylindrical or rectangular tubular outer conductor.
Inventors
- 👤 Goro Sugawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:40
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/2039; H01P1/202; H01Q; H01Q11/00; H01Q11/02; H01Q13/00; H01Q13/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
161 words
A high-frequency signal transmission system comprising: at least one conical inner conductor, having a unitary exponential gradient and having a normalized characteristic impedance at the center represented by two cascaded circuit of a conjugate-matched uniform-impedance line; a pair of circular lines having identical dimensions and connected respectively to opposite ends of said conical inner conductor for providing a predetermined characteristic impedance; and a cylindrical outer conductor covering said conical inner conductor and said circular lines with a cavity defined between said conical inner conductor and said cylindrical outer conductor; further comprising a Vπ bias resistor connected between an end of one of said circular lines which is connected to one of the opposite ends thereof and said cylindrical outer conductor and a feeder connected between the other end of said conical inner conductor and said cylindrical outer conductor said cylindrical outer conductor having a longitudinal slit defined therein where by the high-frequency signal transmission system can operate an RF traveling-wave antenna.
Claim 2
Dependent Claim
161 words
A high-frequency signal transmission system comprising: at least one conical inner conductor, having a unitary exponential gradient and having a normalized characteristic impedance at the center represented by two cascaded circuit of a conjugate-matched uniform-impedance line; a pair of circular lines having identical dimensions and connected respectively to opposite ends of said conical inner conductor for providing a predetermined characteristic impedance; and a cylindrical outer conductor covering said conical inner conductor and said circular lines with a cavity defined between said conical inner conductor and said cylindrical outer conductor; further comprising a Vπ bias resistor connected between an end of one of said circular lines which is connected to one of the opposite ends thereof and said cylindrical outer conductor and a feeder connected between the other end of said conical inner conductor and said cylindrical outer conductor said cylindrical outer conductor having a longitudinal slit defined therein where by the high-frequency signal transmission system can operate an RF traveling-wave antenna.
Claim 3
Dependent Claim
96 words
A high-frequency signal transmission system according to claim 1, further comprising a lead connected to one of the opposite ends of said conical inner conductors, a Vπ bias resistor connected between an end of one of said circular lines which is connected to said one of the opposite ends thereof and said cylindrical outer conductor, and a feeder connects between the other end of said conical inner conductor and said cylindrical outer conductor, said cylindrical outer conductor having a longitudinal slit defined therein, whereby the high-frequency signal transmission system can operate as an RF traveling-wave antenna.
Claim 4
Dependent Claim
139 words
A high-frequency signal transmission system comprising: at least one planar inner conductor, having opposite sides each having a unitary exponential gradient, and having a normalized characteristic impedance at the center represented by two cascaded circuit of a conjugate-matched uniform-impedance line; a pair of impedance-matching lines having identical dimensions and connected respectively to opposite ends of said planar inner conductor for providing a predetermined characteristic impedance; and a rectangular tubular outer conductor covering said planar inner conductor and said impedance-matching lines with a cavity defined between said planar inner conductor and said rectangular tubular outer conductor; further comprising a feeder connected between an end of one of the impedance-matching lines and said rectangular tubular outer conductor, said rectangular tubular outer conductor having a longitudinal slit defined therein, whereby the high-frequency signal transmission system can operate as an RF traveling-wave antenna.
Claim 5
Dependent Claim
139 words
A high-frequency signal transmission system comprising: at least one planar inner conductor, having opposite sides each having a unitary exponential gradient, and having a normalized characteristic impedance at the center represented by two cascaded circuit of a conjugate-matched uniform-impedance line; a pair of impedance-matching lines having identical dimensions and connected respectively to opposite ends of said planar inner conductor for providing a predetermined characteristic impedance; and a rectangular tubular outer conductor covering said planar inner conductor and said impedance-matching lines with a cavity defined between said planar inner conductor and said rectangular tubular outer conductor; further comprising a feeder connected between an end of one of the impedance-matching lines and said rectangular tubular outer conductor, said rectangular tubular outer conductor having a longitudinal slit defined therein, whereby the high-frequency signal transmission system can operate as an RF traveling-wave antenna.
Claim 6
Dependent Claim
62 words
A high-frequency signal transmission system according to claim 3, further comprising a lead connected to one of said impedance-matching lines, and a feeder connected between an end of the one impedance-matching line and said rectangular tubular outer conductor, said rectangular tubular outer conductor having a longitudinal slit defined therein, whereby the high-frequency signal transmission system can operate as an RF traveling-wave antenna.
Claim 7
Dependent Claim
19 words
A high-frequency signal transmission system according to claim 1, wherein said Vπ bias resistor has an impedance of 120Ω.
Claim 8
Dependent Claim
19 words
A high-frequency signal transmission system according to claim 2, wherein said Vπ bias resistor has an impedance of 120Ω.
Claim 9
Dependent Claim
29 words
A high-frequency signal transmission system according to claim 1, wherein said pair circular lines diameter are equal to the diameter of the intermediate portion of said conical inner conductor.
Claim 10
Dependent Claim
29 words
A high-frequency signal transmission system according to claim 2, wherein said pair circular lines diameter are equal to the diameter of the intermediate portion of said conical inner conductor.
Claim 11
Dependent Claim
29 words
A high-frequency signal transmission system according to claim 3, wherein said pair impedance-matching lines width are equal to the diameter of the intermediate portion of said planar inner conductor.
Claim 12
Dependent Claim
29 words
A high-frequency signal transmission system according to claim 4, wherein said pair impedance-matching lines width are equal to the diameter of the intermediate portion of said planar inner conductor.
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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) | 2000-03-03 | 2000-09-02 | 2001-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-03 | 2004-09-02 | 2005-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-03 | 2008-09-02 | 2009-03-04 | $7700.00 | Window Closed / Lapsed |