Patent US3969689A successfully refreshed from Google Patents.
US3969689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual diode oscillator and airstrip transmission line apparatus
Assignee: Hughes Missile Systems Co
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Filing: 1975-04-07
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Granted: 1976-07-13
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Expires: 1995-04-07
Abstract
Abstract Novel apparatus is provided which permits the combination of the peak pulse power from a pair of avalanche diode oscillators, each diode driving a respective one of two symmetrically suspended airstrip transmission lines which are coupled to a common output connector.
Inventors
- 👤 Bill E. Corrons
- 👤 James F. Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/143
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
A multiple-diode microwave oscillator including, in combination: a plurality of ground plane plates; a plurality of airstrip transmission lines positioned between said ground plane plates; a plurality of avalanche diodes each positioned in a strap cavity having unbiased conductive walls and coupled to a wall of the cavity and to a respective one of said plurality of transmission lines; means for coupling operating signals to each of said plurality of avalanche diodes; and means for combining the power from each of said diodes at the same desired frequency and phase.
Claim 2
Dependent Claim
90 words
A multiple-diode microwave oscillator including, in combination: a plurality of ground plane plates; a plurality of airstrip transmission lines positioned between said ground plane plates; a plurality of avalanche diodes each positioned in a strap cavity having unbiased conductive walls and coupled to a wall of the cavity and to a respective one of said plurality of transmission lines; means for coupling operating signals to each of said plurality of avalanche diodes; and means for combining the power from each of said diodes at the same desired frequency and phase.
Claim 3
Dependent Claim
21 words
Apparatus according to claim 1 in which said avalanche diodes operate in the IMPATT mode in response to said operating signals.
Claim 4
Dependent Claim
45 words
Apparatus according to claim 1 in which the number of transmission lines in said plurality is two and each of said transmission lines is carried on the opposite side of a common non-conductive substrate, and in which the number of ground plane plates is two.
Claim 5
Dependent Claim
45 words
Apparatus according to claim 1 in which each strap cavity includes a conductive strap having a total effective length of one-half of the wavelength at the desired frequency of oscillation and each of said avalanche diodes is coupled to the center of its associated strap.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 4 in which both ends of the conductive strap are grounded through said ground plane plates for RF signal purposes.
Claim 7
Dependent Claim
20 words
Apparatus according to claim 1 in which each of said transmission lines is capacitively coupled to its associated avalanche diode.
Claim 8
Dependent Claim
19 words
Apparatus according to claim 1 in which each of said avalanche diodes is carried in an adjustably positionable collet.
Claim 9
Dependent Claim
11 words
Apparatus according to claim 7 in which said collet is metallic.
Claim 10
Dependent Claim
20 words
Apparatus according to claim 3 in which said non-conductive substrate is carried centrally between a pair of ground plane plates.
Claim 11
Dependent Claim
18 words
Apparatus according to claim 1 further including a ferrite load individually coupled to each of said strap cavities.
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) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |