Patent US5027090A successfully refreshed from Google Patents.
US5027090A
Expired / Lapsed
US
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Filter having a dielectric resonator
Assignee: Alcatel Espace Industries SA
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Filing: 1990-04-13
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Granted: 1991-06-25
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Expires: 2010-04-13
Abstract
Abstract A filter having a dielectric resonator, the filter comprising at least one cylindrical cavity (10) inside which there is a dielectric resonator (11) whose axis of symmetry (Δ) is colinear with the axis of symmetry of the cavity (10), the filter being characterized in that the resonator is held by a system of dished washers (15, 16). Applicable to microwave frequencies.
Inventors
- 👤 Jean-Michel Gueble
- 👤 Jean-Bernard Theron
- 👤 Yannick Latouche
- 👤 Jean-Bernard Ducrocq
- 👤 Bernard Perez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:50
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/207; H01P1/208; H01P1/2084
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
A filter comprising at least one member having a cylindrical cavity (10) having an axis of symmetry, a dielectric resonator (11) inside said cavity (10) having an axis of symmetry (Δ) colinear with the axis of symmetry of the cavity (10), first and second washers (15, 16) having opposite axial ends holding said resonator in said cavity; said first washer (15) being terminated at a first end by studs (17) bearing axially against a rim (12) formed on the inside wall of the cavity (10) and at a second axial end by a plurality of circumferentially separated surfaces (18) bearing axially against the resonator (11); said second washer (16) being terminated at a first axial end by a radially internal conical surface (19) bearing lock screws passing through the cavity defining member and holding the resonator (11) in place in the cavity, and at a second axial end by a plurality of circumferentially separate surfaces (18) bearing axially against the resonator (11).
Claim 2
Dependent Claim
162 words
A filter comprising at least one member having a cylindrical cavity (10) having an axis of symmetry, a dielectric resonator (11) inside said cavity (10) having an axis of symmetry (Δ) colinear with the axis of symmetry of the cavity (10), first and second washers (15, 16) having opposite axial ends holding said resonator in said cavity; said first washer (15) being terminated at a first end by studs (17) bearing axially against a rim (12) formed on the inside wall of the cavity (10) and at a second axial end by a plurality of circumferentially separated surfaces (18) bearing axially against the resonator (11); said second washer (16) being terminated at a first axial end by a radially internal conical surface (19) bearing lock screws passing through the cavity defining member and holding the resonator (11) in place in the cavity, and at a second axial end by a plurality of circumferentially separate surfaces (18) bearing axially against the resonator (11).
Claim 3
Dependent Claim
15 words
A filter according to claim 1, wherein the dielectric resonator (11) is cylindrical in shape.
Claim 4
Dependent Claim
19 words
A filter according to claim 1, wherein the resonator (11) occupies a longitudinally symmetrical position inside the cavity (10).
Claim 5
Dependent Claim
28 words
A filer according to claim 1, wherein the resonator (11) is disposed between two washers (15, 16) bearing against radially inwardly projecting, circumferentially spaced separate bearing surfaces (18).
Claim 6
Dependent Claim
13 words
A filter according to claim 4, wherein the washers (15, 16) are perforated.
Claim 7
Dependent Claim
10 words
A filter according to claim 1, said washers are prestressed.
Claim 8
Dependent Claim
16 words
A filter according to claim 1, wherein the washers (15, 16) are made of dielectric material.
Claim 9
Dependent Claim
17 words
A filter according to claim 1, wherein the member forming cavity (10) is made of silver-plated metal.
References Cited (Backward Citations)
DE1591362A1
Cited
US3562665A
Cited
DE2047229A1
Cited
GB1520473A
Cited
US4661790A
Cited
EP0173545A2
Cited
US4563661A
Cited
JPS61251202A
Cited
US4646038A
Cited
US4667172A
Cited
SU1427443A1
Cited
US4942377A
Cited
US4939489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |