US3573666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency adjustable microwave stripline circulator
Assignee: General Electric Co
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Filing: 1969-02-27
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Granted: 1971-04-06
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Expires: 1989-02-27
Abstract
Abstract A microwave stripline circulator is disclosed which is adjustable for operation over a wide range of frequencies. This is accomplished by a combination of an incremental coarse tuning means and a fine tuning means. The coarse tuning means comprises an arrangement providing for a selectable number of attachment screws around the periphery of the resonator disc of the circulator, and the fine tuning means comprises an arrangement for providing adjustable pressure to a garnet disc positioned at the resonator disc.
Inventors
- 👤 Terence P Caffrey
- 👤 Thomas J O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:11
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/383; H01P1/387
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
An electrical signal circulator comprising an assembly of a pair of spaced-apart ground planes, a resonator plate positioned between said ground planes, a plurality of signal junctions connected to said resonator plate at spaced points around the periphery thereof, a member of garnet or like material positioned between said resonator plate and one of said ground planes, and means for providing a magnetic field transversely through said resonator plate and garnet member, said assembly being provided with a plurality of openings transversely therein positioned around and spaced from the periphery of said resonator plate and garnet member in each segment between said signal junctions, said openings being adaptive to receive assembly screws for holding the assembly together, a selected number of assembly screws positioned in at least some of said openings in each section for holding said assembly together and also constituting conductive members for effecting incremental coarse frequency tuning of the circulator, and a fine frequency tuning means for said circulator comprising means for adjustably applying pressure to said member of garnet or like material.
Claim 2
Dependent Claim
176 words
An electrical signal circulator comprising an assembly of a pair of spaced-apart ground planes, a resonator plate positioned between said ground planes, a plurality of signal junctions connected to said resonator plate at spaced points around the periphery thereof, a member of garnet or like material positioned between said resonator plate and one of said ground planes, and means for providing a magnetic field transversely through said resonator plate and garnet member, said assembly being provided with a plurality of openings transversely therein positioned around and spaced from the periphery of said resonator plate and garnet member in each segment between said signal junctions, said openings being adaptive to receive assembly screws for holding the assembly together, a selected number of assembly screws positioned in at least some of said openings in each section for holding said assembly together and also constituting conductive members for effecting incremental coarse frequency tuning of the circulator, and a fine frequency tuning means for said circulator comprising means for adjustably applying pressure to said member of garnet or like material.
Claim 3
Dependent Claim
76 words
A circulator as claimed in claim 1, including a bracket member positioned over and spaced from said member of garnet or like material and provided with openings in alignment with said plurality of openings, said assembly screws being positioned in said bracket member openings for holding the bracket member in place, said means for adjustably applying pressure to the member of garnet or like material comprising a pressure member in threaded engagement with said bracket member.
Claim 4
Dependent Claim
28 words
A circulator as claimed in claim 2, including a pressure distribution member of resilient material positioned between said pressure member and said member of garnet or like material.
Claim 5
Dependent Claim
70 words
A circulator as claimed in claim 2, including a second bracket member positioned below and spaced from said resonator plate and provided with openings in alignment with said plurality of openings, said assembly screws being positioned in said second bracket member openings for holding the second bracket member in place, saiD means for providing said magnetic field comprising an adjustable magnetic structure in threaded engagement with said second bracket member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |