US3796975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short high-frequency resonator having a large frequency range for cyclotrons
Assignee: US Philips Corp
•
Filing: 1972-10-24
•
Granted: 1974-03-12
•
Expires: 1992-10-24
Abstract
Abstract An electric high-frequency resonator for accelerating charged atomic particles, comprising a first hollow conductor, a second hollow conductor extending within the first hollow conductor, a third hollow conductor extending within the second hollow conductor and a fourth hollow conductor extending within the third hollow conductor. The second and third hollow conductors and the first and fourth hollow conductors are connected respectively to form first and second waveguides for the propagation of high-frequency waves. Input coupling means are employed to connect the interposed first and second waveguides in series thereby providing increased electrical length characteristics for the propagation of high-frequency electric waves without increasing the structural length of the resonator.
Inventors
- 👤 D Wierts
- 👤 P Boomsma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:10
CPC Classifications
H; H05; H05H; H05H13/00; H01; H01P; H01P7/00; H01P7/04; H05H7/00; H05H7/14; H05H7/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
An electric high-frequency resonator comprising an outer tubular conductor extending a predetermined length and having an open end and a closed end, an inner conductor extending coaxially within said outer conductor for said predetermined length and having one end thereof connected to said closed end of said outer conductor and an open other end, a tubular conducting member extending coaxially in the intermediate space between said conductors for a length shorter than said predetermined length to provide two concentric waveguide parts communicating with each other at respective end portions of said conductors, first shortcircuit means disposed in one waveguide part to form adjacent resonating cavities therein, and second short-circuit means connected to the end of said conducting member near the open ends of said conductors and being tiltable between a first position in contact with said inner conductor and, respectively, a second position in contact with said outer conductor to couple selectively one of said cavities to the open end portions of said conductors while short-circuiting the other cavity.
Claim 2
Dependent Claim
169 words
An electric high-frequency resonator comprising an outer tubular conductor extending a predetermined length and having an open end and a closed end, an inner conductor extending coaxially within said outer conductor for said predetermined length and having one end thereof connected to said closed end of said outer conductor and an open other end, a tubular conducting member extending coaxially in the intermediate space between said conductors for a length shorter than said predetermined length to provide two concentric waveguide parts communicating with each other at respective end portions of said conductors, first shortcircuit means disposed in one waveguide part to form adjacent resonating cavities therein, and second short-circuit means connected to the end of said conducting member near the open ends of said conductors and being tiltable between a first position in contact with said inner conductor and, respectively, a second position in contact with said outer conductor to couple selectively one of said cavities to the open end portions of said conductors while short-circuiting the other cavity.
Claim 3
Dependent Claim
28 words
A resonator as claimed in claim 1 for use in connection with a cyclotron, said open ends of said conductors being connectable to acceleration electrodes of said cyclotron.
Claim 4
Dependent Claim
26 words
A resonator as claimed in claim 1, wherein said first short-circuit means includes sliding plates positioned between said outer and inner conductors to tune said resonator.
Claim 5
Dependent Claim
22 words
A resonator as claimed in claim 3 wherein said sliding plates tune over two frequency ranges, said frequency ranges overlapping each other.
Claim 6
Dependent Claim
30 words
A resonator as claimed in claim 1 wherein said outer and inner conductors and said conducting member are substantially rectangular in cross-section having confronting sides substantially parallel to each other.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |