US3758886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Versatile in line waveguide to coax transistion
Assignee: United States Department of the Navy
•
Filing: 1972-11-01
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Granted: 1973-09-11
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Expires: 1992-11-01
Abstract
Abstract A microwave transition to interface between a coaxial cable and a waveguide comprises a hook-shaped exciter and a U-shaped dielectric loading transformer. The exciter is an extension of the inner conductor of the coaxial line. It enters the waveguide along its longitudinal axis and bends toward the top or bottom wall of the waveguide. The transformer surrounds the exciter with the open end located at the waveguide-coax interface.
Inventors
- 👤 N Landry
- 👤 J Grabowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:32
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/08; H01P5/10; H01P5/103
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
22 words
A coaxial line-to-waveguide transition comprising: a hook-shaped RF exciter of conductive material; and, a U-shaped dielectric loading transformer substantially surrounding the exciter.
Claim 2
Dependent Claim
22 words
A coaxial line-to-waveguide transition comprising: a hook-shaped RF exciter of conductive material; and, a U-shaped dielectric loading transformer substantially surrounding the exciter.
Claim 3
Dependent Claim
12 words
The transition of claim 1 wherein the exciter is of rectangular cross-section.
Claim 4
Dependent Claim
67 words
The transition of claim 2 wherein: the exciter has a shank portion and a second portion extending at an angle to said shank portion; the transformer has two side walls and a base; the exciter is disposed within the transformer with the shank portion perpendicular to said base at the geometrical center thereof; and, said angle lies in a plane which is parallel to the side walls.
Claim 5
Dependent Claim
54 words
The transition of claim 3 wherein: the shank portion of the exciter is connected to the center conductor of the coaxial line; and, the dielectric transformer is disposed within the waveguide at one end thereof with the geometrical center of the base of the transformer being coincident with the longitudinal axis of the waveguide.
Claim 6
Dependent Claim
42 words
The transition of claim 4 wherein: the dielectric transformer is disposed within the waveguide with its sidewalls parallel to the vertical walls of the waveguide; and, the second portion of the exciter is in contact with the bottom wall of the waveguide.
Claim 7
Dependent Claim
21 words
The transition of claim 5 wherein the second portion of the exciter is connected to the bottom wall of the waveguide.
Claim 8
Dependent Claim
29 words
The transition of claim 5 wherein the end surfaces of the sidewalls and base of the transformer are in contact with the top and bottom walls of the waveguide.
Claim 9
Dependent Claim
49 words
The transition of claim 7 wherein: the shank portion of the exciter lies at the geometric center of the waveguide cross-section along the longitudinal axis thereof; and, the second portion of the exciter lies at an angle of approximately 60* with respect to the longitudinal axis of the waveguide.
Claim 10
Dependent Claim
14 words
The transition of claim 8 wherein the waveguide is a heavily loaded microwave phaseshifter.
References Cited (Backward Citations)
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |