US4271399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric resonator for VHF to microwave region
Assignee: NEC Corp
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Filing: 1979-04-24
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Granted: 1981-06-02
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Expires: 1999-04-24
Abstract
Abstract A high frequency miniaturized dielectric resonator is disclosed. The resonator includes an elongated dielectric member axially hollow at least in part of its cross section. A conductor surrounds the dielectric member, and a metal rod is inserted into the hollowed part of the dielectric member and coupled to the conductor. This structure supports resonance in a hybrid mode including the TEM mode and the TE 10g mode (g being a positive number).
Inventors
- 👤 Hideo Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:07
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/10; H01P7/105; H01P7/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
A dielectric resonator comprising: an elongated dielectric member axially hollow at least in part of its cross section; a conductor surrounding said dielectric member; and a metal rod inserted into the hollow part of said dielectric member and coupled to said conductor, said metal rod having a length shorter than said hollow part, leaving a part of the overall length of said dielectric member without said rod inserted, so that resonance is supported in the TEM mode and the TE 10g mode (g is a positive number) at said part of said overall length.
Claim 2
Dependent Claim
94 words
A dielectric resonator comprising: an elongated dielectric member axially hollow at least in part of its cross section; a conductor surrounding said dielectric member; and a metal rod inserted into the hollow part of said dielectric member and coupled to said conductor, said metal rod having a length shorter than said hollow part, leaving a part of the overall length of said dielectric member without said rod inserted, so that resonance is supported in the TEM mode and the TE 10g mode (g is a positive number) at said part of said overall length.
Claim 3
Dependent Claim
26 words
A dielectric resonator as claimed in claim 1 wherein said conductor consists of a thin layer formed by metalization of the surface of said dielectric member.
Claim 4
Dependent Claim
20 words
A dielectric resonator as claimed in claim 1 wherein said dielectric member is supported at a distance from said conductor.
Claim 5
Dependent Claim
16 words
A dielectric resonator as claimed in claim 3 wherein said metal rod supports said dielectric member.
Claim 6
Dependent Claim
32 words
A dielectric resonator as claimed in claim 3 wherein said dielectric member is supported by a low loss, low dielectric constant material filling the space between said dielectric member and said conductor.
References Cited (Backward Citations)
US3668574A
Cited
US4182997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |