US5532643A
Expired / Lapsed
US
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Manufacturably improved asymmetric stripline enhanced aperture coupler
Assignee: Quarterhill Inc
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Filing: 1995-06-23
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Granted: 1996-07-02
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Expires: 2015-06-23
Abstract
Abstract A manufacturably improved asymmetric stripline enhanced aperture coupler (10) is provided including a first non-transverse electromagnetic (non-TEM) field which couples an asymmetric stripline transmission line (22) to a coupling conductor (19) through a first aperture (17) in a first ground plane (16). The coupler (10) suppresses a second non-TEM field formed as an image on a second ground plane (15) by reducing the current flow on the second ground plane (15) using the asymmetric stripline transmission line (22) with increased coupling between a stripline conductor (12) and first ground plane (16) relative to coupling between stripline conductor (12) and second ground plane (15), particularly in the vicinity of the second non-TEM field using second aperture (14). The second non-TEM field is suppressed so as to enhance the coupling effect of the first non-TEM field between asymmetric stripline transmission line (22) and a coupling conductor (19).
Inventors
- 👤 Stephen L. Kuffner
- 👤 Eric L. Krenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:37
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/187
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
68 words
An asymmetric stripline aperture coupler comprising: a stripline conductor; a first ground plane having a first aperture; a first dielectric disposed between the stripline conductor and the first ground plane; a second ground plane; a second dielectric disposed between the stripline conductor and the second ground plane having a second aperture; a third dielectric; and a coupling conductor separated from the first ground plane by the third dielectric.
Claim 2
Dependent Claim
68 words
An asymmetric stripline aperture coupler comprising: a stripline conductor; a first ground plane having a first aperture; a first dielectric disposed between the stripline conductor and the first ground plane; a second ground plane; a second dielectric disposed between the stripline conductor and the second ground plane having a second aperture; a third dielectric; and a coupling conductor separated from the first ground plane by the third dielectric.
Claim 3
Dependent Claim
19 words
The coupler of claim 1 wherein the first dielectric has a first dielectric height and a first dielectric constant.
Claim 4
Dependent Claim
45 words
The coupler of claim 2 wherein the second dielectric has a second dielectric height and a second dielectric constant with at least one of the second dielectric height and the second dielectric constant being different than the first dielectric height and the first dielectric constant.
Claim 5
Dependent Claim
21 words
The coupler of claim 1 wherein the first aperture is positioned in alignment between the stripline conductor and the coupling conductor.
Claim 6
Dependent Claim
21 words
The coupler of claim 4 wherein the second aperture is positioned in alignment with the first aperture and the stripline conductor.
Claim 7
Dependent Claim
14 words
The coupler of claim 1 wherein the second aperture has an aperture dielectric constant.
Claim 8
Independent Claim
92 words
A method of forming an asymmetric stripline aperture coupler comprising the steps of: forming a stripline transmission line having a first ground plane, a stripline conductor and a second ground plane; separating the first ground plane from the stripline conductor using a first dielectric; forming a first aperture in the first ground plane; separating the second ground plane from the stripline conductor using a second dielectric; forming a second aperture in the second dielectric; providing a coupling conductor; and separating the coupling conductor from the first ground plane using a third dielectric.
Claim 9
Independent Claim
92 words
A method of forming an asymmetric stripline aperture coupler comprising the steps of: forming a stripline transmission line having a first ground plane, a stripline conductor and a second ground plane; separating the first ground plane from the stripline conductor using a first dielectric; forming a first aperture in the first ground plane; separating the second ground plane from the stripline conductor using a second dielectric; forming a second aperture in the second dielectric; providing a coupling conductor; and separating the coupling conductor from the first ground plane using a third dielectric.
Claim 10
Dependent Claim
26 words
The method of claim 7 wherein forming the first aperture includes removing conductive material from the first ground plane within a region defining the first aperture.
Claim 11
Dependent Claim
26 words
The method of claim 8 wherein forming the first aperture includes aligning the region defining the first aperture between the stripline conductor and the coupling conductor.
Claim 12
Dependent Claim
32 words
The method of claim 7 wherein forming the second aperture includes altering a second dielectric constant of the second dielectric to an aperture dielectric constant within a region defining the second aperture.
Claim 13
Dependent Claim
19 words
The method of claim 10 wherein altering the second dielectric constant includes removing dielectric material from the second dielectric.
Claim 14
Dependent Claim
26 words
The method of claim 10 wherein forming the second aperture includes aligning the region defining the second aperture with the first aperture and the stripline conductor.
Claim 15
Dependent Claim
23 words
The method of claim 7 wherein forming the coupling conductor includes aligning the coupling conductor with the stripline conductor and the first aperture.
References Cited (Backward Citations)
US3665480A
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US3581243A
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US3771075A
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US3827054A
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US5175560A
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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) | 1999-07-02 | 2000-01-01 | 2000-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-02 | 2004-01-01 | 2004-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-02 | 2008-01-01 | 2008-07-02 | $7700.00 | Window Closed / Lapsed |