Patent US3883824A successfully refreshed from Google Patents.
US3883824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric-YIG turner for bulk oscillators
Assignee: United States Department of the Army
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Filing: 1974-07-30
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Granted: 1975-05-13
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Expires: 1994-07-30
Abstract
Abstract A system is disclosed in which a bulk oscillator is tuned to an oscillation frequency by a dielectric resonator and YIG sample. The bulk oscillator is mounted in a wave guide adjacent to the dielectric resonator and YIG sample. The bulk oscillator is biased to a point of negative resistance. An adjustable magnetic field is employed to alter the characteristics of the YIG sample and therefore electrically tune the frequency of oscillation of the bulk oscillator.
Inventors
- 👤 Maurice Weiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:44
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/142
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
83 words
In combination: means for defining an electromagnetic field bounding region: a device mounted in said electromagnetic field bounding region; said device having a negative resistance portion on its characteristic; means for biasing said device into said negative resistive portion of its characteristic; a dielectric resonator mounted in said electromagnetic field bounding region adjacent to said device; a YIG sample mounted in said electromagnetic field bounding region adjacent to said dielectric resonator; and means for providing an adjustable magnetic field to said YIG sample.
Claim 2
Dependent Claim
83 words
In combination: means for defining an electromagnetic field bounding region: a device mounted in said electromagnetic field bounding region; said device having a negative resistance portion on its characteristic; means for biasing said device into said negative resistive portion of its characteristic; a dielectric resonator mounted in said electromagnetic field bounding region adjacent to said device; a YIG sample mounted in said electromagnetic field bounding region adjacent to said dielectric resonator; and means for providing an adjustable magnetic field to said YIG sample.
Claim 3
Dependent Claim
15 words
The combination as defined in claim 1 in which said device is an LSA diode.
Claim 4
Dependent Claim
30 words
The combination as defined in claim 1 in which said dielectric resonator is a disk made from a material taken from the group which comprises: titanium dioxide and strontium titanite.
Claim 5
Dependent Claim
28 words
The combination as defined in claim 3 in which said disk has a diameter which is less than .200 inches and a thickness of less than .020 inches.
Claim 6
Dependent Claim
20 words
The combination as defined in claim 4 in which said YIG sample has a diameter of less than .035 inches.
Claim 7
Dependent Claim
15 words
The combination as defined in claim 1 in which said device is a GUNN diode.
Claim 8
Dependent Claim
30 words
The combination as defined in claim 6 in which said dielectric resonator is a disk made from a material taken from the group which comprises: titanium dioxide and strontium titanite.
Claim 9
Dependent Claim
28 words
The combination as defined in claim 7 in which said disk has a diameter which is less than .200 inches and a thickness of less than .020 inches.
Claim 10
Dependent Claim
28 words
The combination as defined in claim 8 in which said disk has a diameter which is less than .200 inches and a thickness of less than .020 inches.
Claim 11
Dependent Claim
52 words
The combination as defined in claim 1 in which said means for defining said region is a shorted waveguide of said device, said dielectric resonator, and said YIG sample are mounted in said shorted waveguide a distance from the shorted end thereof less than a quarter wavelength at a center operating frequency.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |