Patent US1999689A successfully refreshed from Google Patents.
Patent US4011528A successfully refreshed from Google Patents.
US4011528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-lumped element coupler
Assignee: SRI International Inc
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Filing: 1975-07-14
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Granted: 1977-03-08
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Expires: 1995-07-14
Abstract
Abstract A coupling circuit for use at microwave frequencies comprising two conductors each having substantially the shape of a W, which conductors are deposited on a substrate in a manner so that the bases of W's oppose one another to form two semi-lumped capacitances of different susceptance, separated by phasing line lengths.
Inventors
- 👤 Allen F. Podell
- 👤 Leo Young
- 👤 Arthur Karp
- 👤 Donald R. Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:26
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/185
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A microwave coupler comprising a dielectric substrate, a first conductor substantially in the form of a W deposited on said substrate, a second conductor substantially in the form of a W which is substantially a mirror image of the first conductor deposited on said substrate with the two base sections of said second conductor W capacitively spaced opposite the two base sections of the W formed by said first conductor, and a conductive coating deposited on the opposite side of said substrate.
Claim 2
Dependent Claim
82 words
A microwave coupler comprising a dielectric substrate, a first conductor substantially in the form of a W deposited on said substrate, a second conductor substantially in the form of a W which is substantially a mirror image of the first conductor deposited on said substrate with the two base sections of said second conductor W capacitively spaced opposite the two base sections of the W formed by said first conductor, and a conductive coating deposited on the opposite side of said substrate.
Claim 3
Dependent Claim
28 words
A coupler as recited in claim 1 wherein each of the angles established by forming the first and second conductors into the shape of a W is 90°.
Claim 4
Dependent Claim
31 words
A coupler as recited in claim 1 wherein one of the opposing base sections of the W's formed by said first and second conductors are flat for establishing capacitive coupling therebetween.
Claim 5
Dependent Claim
31 words
A coupler as recited in claim 1 wherein one of the opposing base sections of said first and second conductors are formed into spaced interleaving fingers to establish a capacitor therebetween.
Claim 6
Dependent Claim
158 words
A microwave coupling circuit comprising a substrate, a conductive coating deposited on one side of said substrate, a first conductor shaped to form a W, deposited on the other surface of said substrate, a second conductor shaped to form a W which is substantially a mirror image of the first conductor deposited on said other surface of said substrate with its two base regions opposite the base regions of the W formed by said first conductor, one of the base regions of said first and second conductors being formed flat and spaced from one another to provide a first capacitance, the other base regions of said first and second conductors formed into fingers which are spaced from and interleaved with one another to form a second capacitor, and the lengths of the first and second conductor segments, which extend between the base regions of said W shaped first and second conductors, being predetermined to provide a predetermined phasing.
Claim 7
Dependent Claim
158 words
A microwave coupling circuit comprising a substrate, a conductive coating deposited on one side of said substrate, a first conductor shaped to form a W, deposited on the other surface of said substrate, a second conductor shaped to form a W which is substantially a mirror image of the first conductor deposited on said other surface of said substrate with its two base regions opposite the base regions of the W formed by said first conductor, one of the base regions of said first and second conductors being formed flat and spaced from one another to provide a first capacitance, the other base regions of said first and second conductors formed into fingers which are spaced from and interleaved with one another to form a second capacitor, and the lengths of the first and second conductor segments, which extend between the base regions of said W shaped first and second conductors, being predetermined to provide a predetermined phasing.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |