US5396202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly and method for coupling a microstrip circuit to a cavity resonator
Assignee: VTT Technical Research Centre of Finland
•
Filing: 1992-01-17
•
Granted: 1995-03-07
•
Expires: 2012-01-17
Abstract
Abstract PCT No. PCT/FI92/00013 Sec. 371 Date Sep. 8, 1993 Sec. 102(e) Date Sep. 8, 1993 PCT Filed Jan. 17, 1992 PCT Pub. No. WO92/13371 PCT Pub. Date Jun. 8, 1992.An assembly and a method is provided for coupling a microstrip circuit to a cavity resonator. The assembly includes a substrate, a microstrip circuit fabricated on one side of the substrate plate, a ground plane fabricated on the other side of the substrate plate and a cavity resonator. The microstrip is coupled to the cavity resonator by a slot fabricated in the ground plane and a planar radiator disposed between the ground plane and the cavity resonator. The assembly produces a resonator that can operate for frequencies in the range of 1-100 GHz in a simplified and less expensive manufacturing process.
Inventors
- 👤 Hans-Otto Scheck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:47
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/02; H01P5/08; H01P5/10; H01P5/107; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
An assembly for coupling a microstrip circuit to a cavity resonator, said assembly comprising: a substrate plate; a microstrip circuit disposed on one side of said substrate plate; a ground plane disposed on the other side of said substrate plate; and a cavity resonator coupled to the microstrip circuit by means of a slot disposed in said ground plane and a planar radiator disposed between said ground plane and said cavity resonator.
Claim 2
Dependent Claim
72 words
An assembly for coupling a microstrip circuit to a cavity resonator, said assembly comprising: a substrate plate; a microstrip circuit disposed on one side of said substrate plate; a ground plane disposed on the other side of said substrate plate; and a cavity resonator coupled to the microstrip circuit by means of a slot disposed in said ground plane and a planar radiator disposed between said ground plane and said cavity resonator.
Claim 3
Dependent Claim
39 words
An assembly as defined in claim 1, wherein said planar radiator comprises a planar and square shape, in which the square shape is dimensioned as λ/2×λ/2, where λ is the wavelength at the operating frequency of said cavity resonator.
Claim 4
Dependent Claim
20 words
An assembly as defined in claim 1, wherein said planar radiator is disposed onto a radiator substrate comprising polytetrafluorethene (PTFE).
Claim 5
Independent Claim
85 words
A method for coupling a microstrip circuit to a cavity resonator comprising the steps of: a) fabricating the microstrip circuit on one side of a substrate plate; b) fabricating a ground plane on the other side of said substrate plate; c) fabricating a slot in said ground plane; (d) coupling the microstrip circuit to the cavity resonator by means of said slot fabricated in said ground plane at said step (c); and e) disposing a planar radiator between said ground plane and the cavity resonator.
Claim 6
Independent Claim
85 words
A method for coupling a microstrip circuit to a cavity resonator comprising the steps of: a) fabricating the microstrip circuit on one side of a substrate plate; b) fabricating a ground plane on the other side of said substrate plate; c) fabricating a slot in said ground plane; (d) coupling the microstrip circuit to the cavity resonator by means of said slot fabricated in said ground plane at said step (c); and e) disposing a planar radiator between said ground plane and the cavity resonator.
Claim 7
Dependent Claim
41 words
A method as defined in claim 4, wherein said planar radiator is formed of a planar and square shape in which the square shape is dimensioned as λ/2×λ/2 where λ is the wavelength at the operating frequency of said cavity resonator.
Claim 8
Dependent Claim
20 words
A method as defined in claim 4, wherein said planar radiator is fabricated onto a radiator substrate comprising polytetraflurethene (PTFE).
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) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |