Patent US3142554A successfully refreshed from Google Patents.
Patent US3698000A successfully refreshed from Google Patents.
US3698000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible and slidable waveguide feed system for a radiating horn antenna
Assignee: RCA Corp
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Filing: 1971-05-06
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Granted: 1972-10-10
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Expires: 1991-05-06
Abstract
Abstract A radiating waveguide horn is provided having a hollow tubular portion and significantly broader radiating portion. The hollow tubular portion is adapted to coaxially receive therein a closely spaced rectangular waveguide feed structure. The waveguide feed structure is dimensioned to pass easily within the hollow tubular portion leaving a gap between the waveguide feed structure and the inner surface of the hollow tubular portion of the waveguide horn. A pair of elongated curved metal strips are fixed to one end of the waveguide feed structure with the metal strips generally extending along the length of said structure. The metal strips are configured and arranged relative to opposite walls of the waveguide feed structure so that the strips make flexible contact with the inner surface of the hollow tubular portion of said horn.
Inventors
- 👤 Norman Richard Landry
- 👤 Robert Jean Mason
- 👤 William Hugh Schaedla
- 👤 Willard Thomas Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:01
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q3/36; H01Q13/00; H01Q13/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
202 words
A resiliently and slidably mounted waveguide feed for coupling electromagnetic signal waves to a radiating waveguide horn antenna having a first hollow tubular conductive portion and waveguide radiating portion comprising, in combination: a waveguide structure dimensioned to easily pass within said hollow tubular portion of said horn, leaving a gap therebetween, a first of a pair of elongated conductive metal strips fixed near one end of said structure to one wall of said structure in a manner so that said first strip extends along a portion of the length of said one wall, a second of said pair of elongated conductive metal strips fixed near said one end of said structure to a second wall opposite said one wall of said waveguide structure in a manner so that said second strip extends along a portion of the length of said second wall, said metal strips having a curved transverse configuration that extends away from said structure so that when said waveguide structure is inserted into the tubular portion of the horn, said metal strips act electrically as a flexible choke as to said electromagnetic signal waves and mechanically to flexibly secure said waveguide structure to the hollow tubular portion of the horn.
Claim 2
Dependent Claim
202 words
A resiliently and slidably mounted waveguide feed for coupling electromagnetic signal waves to a radiating waveguide horn antenna having a first hollow tubular conductive portion and waveguide radiating portion comprising, in combination: a waveguide structure dimensioned to easily pass within said hollow tubular portion of said horn, leaving a gap therebetween, a first of a pair of elongated conductive metal strips fixed near one end of said structure to one wall of said structure in a manner so that said first strip extends along a portion of the length of said one wall, a second of said pair of elongated conductive metal strips fixed near said one end of said structure to a second wall opposite said one wall of said waveguide structure in a manner so that said second strip extends along a portion of the length of said second wall, said metal strips having a curved transverse configuration that extends away from said structure so that when said waveguide structure is inserted into the tubular portion of the horn, said metal strips act electrically as a flexible choke as to said electromagnetic signal waves and mechanically to flexibly secure said waveguide structure to the hollow tubular portion of the horn.
Claim 3
Dependent Claim
21 words
The waveguide feed as claimed in claim 1, wherein said waveguide structure includes a body of relatively high dielectric constant material.
Claim 4
Dependent Claim
19 words
The waveguide feed as claimed in claim 2, wherein the dielectric constant of said material is at least 15.
Claim 5
Dependent Claim
15 words
The waveguide feed as claimed in claim 2, wherein said dielectric material comprises gyromagnetic material.
Claim 6
Dependent Claim
19 words
The waveguide feed as claimed in claim 4, wherein said gyromagnetic material is in the form of a toroid.
Claim 7
Dependent Claim
314 words
In combination: a rectangular waveguide horn antenna having a first hollow tubular rectangular waveguiding portion and a second waveguide radiating portion adjacent to said first portion, a waveguide structure adapted for coupling electromagnetic waves having a first section and an adjacent second section, said first section having a pair of broad walls and a pair of narrow walls dimensioned and arranged to form a rectangular waveguide that can easily pass within said first rectangular waveguide portion of said horn leaving a gap therebetween, said second section of said waveguide structure including an extension of the pair of broad walls of said waveguide structure, a first of a pair of elongated conductive metal strips fixed at one end to the extended portion of one of said broad walls of said waveguide structure in a manner so that the first strip extends along a portion of the length of said one of said broad walls, and a second of said pair of elongated conductive metal strips fixed at one end of the extended portion of the second of Said broad walls of said waveguide structure opposite said one of said broad walls in a manner so that the second strip extends along a portion of the length of said second of said broad walls, said metal strips having a curved transverse configuration that extends away from said waveguide structure so that when said waveguide structure is inserted into the tubular portion of the horn, said metal strips act as a flexible choke as to coupled electromagnetic signal waves and act to resiliently secure the waveguide structure to the first portion of the horn, said waveguide structure being positioned within said horn so that said first section of said waveguide structure is aligned with said first portion of said horn and said second portion of said waveguide structure is aligned with the second portion of said horn.
Claim 8
Dependent Claim
314 words
In combination: a rectangular waveguide horn antenna having a first hollow tubular rectangular waveguiding portion and a second waveguide radiating portion adjacent to said first portion, a waveguide structure adapted for coupling electromagnetic waves having a first section and an adjacent second section, said first section having a pair of broad walls and a pair of narrow walls dimensioned and arranged to form a rectangular waveguide that can easily pass within said first rectangular waveguide portion of said horn leaving a gap therebetween, said second section of said waveguide structure including an extension of the pair of broad walls of said waveguide structure, a first of a pair of elongated conductive metal strips fixed at one end to the extended portion of one of said broad walls of said waveguide structure in a manner so that the first strip extends along a portion of the length of said one of said broad walls, and a second of said pair of elongated conductive metal strips fixed at one end of the extended portion of the second of Said broad walls of said waveguide structure opposite said one of said broad walls in a manner so that the second strip extends along a portion of the length of said second of said broad walls, said metal strips having a curved transverse configuration that extends away from said waveguide structure so that when said waveguide structure is inserted into the tubular portion of the horn, said metal strips act as a flexible choke as to coupled electromagnetic signal waves and act to resiliently secure the waveguide structure to the first portion of the horn, said waveguide structure being positioned within said horn so that said first section of said waveguide structure is aligned with said first portion of said horn and said second portion of said waveguide structure is aligned with the second portion of said horn.
References Cited (Backward Citations)
US3324423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |