US4058813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal waveguide horn antenna
Assignee: RCA Corp
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Filing: 1976-03-18
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Granted: 1977-11-15
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Expires: 1996-03-18
Abstract
Abstract A waveguide horn antenna for transmitting or receiving microwave energy. The antenna comprises a tapered horn portion attached to a straight waveguide portion adapted to be coupled to a source or detector of microwave energy. The walls of the antenna are made of folded sheet metal stamped according to predetermined patterns for simple assembly.
Inventors
- 👤 John Joseph Risko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:06
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/02; H01Q13/0283; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A microwave energy waveguide horn antenna having a tapered horn portion of rectangular cross-section attached at its narrower end to a straight waveguide portion of rectangular cross-section, comprising: a first section defining three walls of said horn portion; a second section defining three walls of said waveguide portion and the fourth wall of said horn portion; said first and second sections being formed of folded sheet metal; a third metallic section defining the fourth wall of said waveguide portion; and fastening means for attaching together said first, second and third sections to form said waveguide horn antenna having an open-ended horn portion and an open-ended waveguide portion.
Claim 2
Dependent Claim
107 words
A microwave energy waveguide horn antenna having a tapered horn portion of rectangular cross-section attached at its narrower end to a straight waveguide portion of rectangular cross-section, comprising: a first section defining three walls of said horn portion; a second section defining three walls of said waveguide portion and the fourth wall of said horn portion; said first and second sections being formed of folded sheet metal; a third metallic section defining the fourth wall of said waveguide portion; and fastening means for attaching together said first, second and third sections to form said waveguide horn antenna having an open-ended horn portion and an open-ended waveguide portion.
Claim 3
Dependent Claim
20 words
A waveguide horn antenna according to claim 1, further including means to close the open end of said waveguide portion.
Claim 4
Dependent Claim
31 words
A waveguide horn antenna according to claim 2, wherein said straight waveguide portion further includes: a source for transmitting microwave energy; and means to couple a bias voltage to said source.
Claim 5
Dependent Claim
31 words
A waveguide horn antenna according to claim 2, wherein said straight waveguide portion further includes: a detector for receiving microwave energy; and means to couple a bias voltage to said detector.
Claim 6
Independent Claim
109 words
A method of making a waveguide horn antenna having a tapered horn portion of rectangular cross-section attached at its narrower end to a straight waveguide portion of rectangular cross-section, which comprises the steps of: folding a first section of sheet metal into three walls of said horn portion; folding a second section of sheet metal into three walls of said waveguide portion and the fourth wall of said horn portion and; attaching by fastening means said folded first and second sections to a third section comprising the fourth wall of said waveguide portion to form said waveguide horn antenna having an open-ended horn portion and an open-ended waveguide portion.
Claim 7
Independent Claim
109 words
A method of making a waveguide horn antenna having a tapered horn portion of rectangular cross-section attached at its narrower end to a straight waveguide portion of rectangular cross-section, which comprises the steps of: folding a first section of sheet metal into three walls of said horn portion; folding a second section of sheet metal into three walls of said waveguide portion and the fourth wall of said horn portion and; attaching by fastening means said folded first and second sections to a third section comprising the fourth wall of said waveguide portion to form said waveguide horn antenna having an open-ended horn portion and an open-ended waveguide portion.
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) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |