US4521746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave oscillator with TM01δ dielectric resonator
Assignee: Harris Corp
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Filing: 1983-08-31
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Granted: 1985-06-04
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Expires: 2003-08-31
Abstract
Abstract A microwave oscillator with TM01δ dielectric resonator is disclosed. The oscillator operates with a TM01δ mode as contrasted with prior art techniques of TE01δ mode. This provides for an improved tuning range in excess of 10% of the operating frequency.
Inventors
- 👤 Eugene J. Hwan
- 👤 Darko Kajfez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:22
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/10; H03; H03B; H03B5/00; H03B5/18; H03B5/1864; H03B2201/00; H03B2201/01; H03B2201/014; H03B2201/017; H03B5/187; H03B5/1876; H03B9/00; H03B9/12; H03B9/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
60 words
A microwave oscillator comprising a tubular dielectric resonator operating in a TM01δ mode and having a resonant oscillation frequency, an adjustable dielectric tuning rod located coaxially to said resonator for tuning to the resonant frequency of said resonator, said resonator and said tuning rod having similar dielectric properties, and a metal housing for supporting said resonator and said tuning rod.
Claim 2
Dependent Claim
60 words
A microwave oscillator comprising a tubular dielectric resonator operating in a TM01δ mode and having a resonant oscillation frequency, an adjustable dielectric tuning rod located coaxially to said resonator for tuning to the resonant frequency of said resonator, said resonator and said tuning rod having similar dielectric properties, and a metal housing for supporting said resonator and said tuning rod.
Claim 3
Dependent Claim
15 words
An oscillator as in claim 1 including an active device coaxially coupled to said resonator.
Claim 4
Dependent Claim
28 words
An oscillator as in claim 2 including an active device coupling probe for coupling said active device to said resonator, including means for adjusting the amount of coupling.
Claim 5
Dependent Claim
15 words
An oscillator as in claim 3 wherein said active device is a bipolar microwave transistor.
Claim 6
Dependent Claim
15 words
An oscillator as in claim 3 wherein said active device is a field-effect microwave transistor.
Claim 7
Dependent Claim
14 words
An oscillator as in claim 3 wherein said active device is a Gunn-effect diode.
Claim 8
Dependent Claim
16 words
An oscillator as in claim 3 including an output coupling probe radially coupled to said resonator.
Claim 9
Dependent Claim
18 words
An oscillator as in claim 7 including a low-permittivity dielectric spacer for spacing said resonator from said housing.
Claim 10
Dependent Claim
48 words
A microwave oscillator comprising tubular dielectric resonator means operating in a TM01δ mode and dielectric tuning rod means located coaxially to said resonator for tuning to the resonant frequency of said resonator, wherein said resonator means and said tuning rod means have similar high-permittivity temperature compensated dielectric properties.
Claim 11
Dependent Claim
48 words
A microwave oscillator comprising tubular dielectric resonator means operating in a TM01δ mode and dielectric tuning rod means located coaxially to said resonator for tuning to the resonant frequency of said resonator, wherein said resonator means and said tuning rod means have similar high-permittivity temperature compensated dielectric properties.
References Cited (Backward Citations)
US4019161A
Cited
US4271399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |