US4303900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band waveguide with double polarization and ultra-high frequency circuit incorporating such a waveguide
Assignee: Thales SA
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Filing: 1980-04-10
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Granted: 1981-12-01
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Expires: 2000-04-10
Abstract
Abstract The invention relates to a double polarization wide band waveguide. The waveguide according to the invention comprises a polygonal waveguide having a symmetry of order 4 with respect to a center of symmetry. The waveguide is provided with a plurality of conductive ridges located on the inner face of the sides of the waveguide in accordance with a symmetry of order 4 with respect to the center of symmetry and with a central conductive core, whose cross-section has the same symmetry of order 4n with respect to the center of symmetry.
Inventors
- 👤 Jacky Tourneur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:58
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/16; H01P1/161; H01P3/00; H01P3/02; H01P3/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
170 words
A wide band waveguide with double polarization comprising a polygonal waveguide having, with respect to a center of symmetry C, a symmetry of the order 4n in which n is a random integer, and which is such that a rotation of the cross-section about said center of symmetry by an angle of 2π/4n does not change properties of the waveguide, wherein on the one hand a polarity of conductive ridges, whose cross-section determines with the polygonal section a transmission section of the waveguide, is provided on the inner face of the sides of the waveguide in accordance with a symmetry of the order 4 with respect to said center of symmetry, the longitudinal plane of symmetry of each ridge being oriented, in the waveguide transmission section, in the direction of the bisectors of the principal axis of the waveguide, and on the other hand within the waveguide a central conductive core is provided, whose section has a same symmetry of the order 4n with respect to said center of symmetry.
Claim 2
Dependent Claim
170 words
A wide band waveguide with double polarization comprising a polygonal waveguide having, with respect to a center of symmetry C, a symmetry of the order 4n in which n is a random integer, and which is such that a rotation of the cross-section about said center of symmetry by an angle of 2π/4n does not change properties of the waveguide, wherein on the one hand a polarity of conductive ridges, whose cross-section determines with the polygonal section a transmission section of the waveguide, is provided on the inner face of the sides of the waveguide in accordance with a symmetry of the order 4 with respect to said center of symmetry, the longitudinal plane of symmetry of each ridge being oriented, in the waveguide transmission section, in the direction of the bisectors of the principal axis of the waveguide, and on the other hand within the waveguide a central conductive core is provided, whose section has a same symmetry of the order 4n with respect to said center of symmetry.
Claim 3
Dependent Claim
145 words
A wide band waveguide with double polarization comprising a waveguide with a square section of side 2a having, with respect to the center of symmetry, a symmetry of the order 4, that is such that a rotation of the cross-section about said center of symmetry by an angle of π/2 does not change the properties of the waveguide, wherein it is provided with, on the one hand within each dihedral angle formed by two consecutive sides of the square sections, a diagonal conductive ridge of square section and side W determining, with the square section of the waveguide a transmission section of the waveguide having, with respect to said center of symmetry a symmetry of order 4 and on the other hand a central conductive core, whose square section of side 2k has a symmetry of order 4 with respect to said centre of symmetry.
Claim 4
Dependent Claim
145 words
A wide band waveguide with double polarization comprising a waveguide with a square section of side 2a having, with respect to the center of symmetry, a symmetry of the order 4, that is such that a rotation of the cross-section about said center of symmetry by an angle of π/2 does not change the properties of the waveguide, wherein it is provided with, on the one hand within each dihedral angle formed by two consecutive sides of the square sections, a diagonal conductive ridge of square section and side W determining, with the square section of the waveguide a transmission section of the waveguide having, with respect to said center of symmetry a symmetry of order 4 and on the other hand a central conductive core, whose square section of side 2k has a symmetry of order 4 with respect to said centre of symmetry.
Claim 5
Dependent Claim
32 words
A waveguide according to claim 2, wherein the ratio of the side dimension of ridge W, relating to the half-dimension a of the waveguide side has a value between 0.22 and 0.36.
Claim 6
Dependent Claim
40 words
A waveguide according to claim 2, wherein the ratio of the side dimension of the section of central core 2k, related to the side dimension 2a of the square section of the waveguide, has a value between 0.2 and 0.6.
Claim 7
Dependent Claim
25 words
A waveguide according to claim 2, wherein it has a plurality of dielectric spacers making it possible to keep the conductive central core in position.
Claim 8
Dependent Claim
21 words
A waveguide according to claim 2, wherein it has a dielectric material foam which keeps the central conductive core in position.
References Cited (Backward Citations)
DE1013338B
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US3002163A
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US3569870A
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US3758882A
Cited
FR2116441B1
Cited
FR2294554A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |