US4319265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithically interconnected series-parallel avalanche diodes
Assignee: United States Department of the Army
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Filing: 1979-12-06
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Granted: 1982-03-09
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Expires: 1999-12-06
Abstract
Abstract Disclosed is an array of avalanche diodes and its method of manufacture wh results in plural pairs of series connected mesa-etched avalanche (TRAPATT) diodes being selectively connected in parallel by metallized air bridges for increasing the impedance level and thereby the peak and average power level available from microwave oscillators and amplifiers configured therefrom. The various series connected diodes are placed in near proximity to respective neighboring diode pairs to reduce parasitics but at the same time the spacing is made sufficiently large to prevent thermal spreading of one diode pair to overlap that of the adjacent diode pair. The metallized air bridges in addition to providing a low inductance interconnection, provide an integrated heat capacitance which is necessary for high power operation.
Inventors
- 👤 Arye Rosen
- 👤 Jerome B. Klatskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
H; H10; H10D; H10D8/00; H10D8/01; H10W; H10W44/00; H10W44/20; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/132; H10W90/00; H10P; H10P72/00; H10P72/70; H10P72/74; H10P72/7438
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
In a microwave oscillator and amplifier comprised of an integrated array of monolithically interconnected semiconductor devices formed on a metallic substrate and having metallized bridge interconnection means, the improvement comprising: first and second sets of TRAPATT diodes individually connected in series, via a respective metallic interface, between said substrate and said interconnection means, said interconnection means comprising a plurality of metallized air bridges connecting a predetermined number of said series connected diodes in parallel, whereby the series of diodes serves to raise the resistance of the diode network for peak power applications.
Claim 2
Dependent Claim
92 words
In a microwave oscillator and amplifier comprised of an integrated array of monolithically interconnected semiconductor devices formed on a metallic substrate and having metallized bridge interconnection means, the improvement comprising: first and second sets of TRAPATT diodes individually connected in series, via a respective metallic interface, between said substrate and said interconnection means, said interconnection means comprising a plurality of metallized air bridges connecting a predetermined number of said series connected diodes in parallel, whereby the series of diodes serves to raise the resistance of the diode network for peak power applications.
Claim 3
Dependent Claim
33 words
The array as defined by claim 1 wherein said first and second sets of diodes are comprised of avalanche diodes defined by respective semiconductor mesa regions on either side of said metallic interface.
Claim 4
Dependent Claim
25 words
The array as defined by claim 2 wherein each of said plurality of metallized air bridges connect two pairs of series connected diodes in parallel.
Claim 5
Dependent Claim
25 words
The array as defined by claim 1 wherein said first and second sets of diodes are both comprised of the same type of diode configuration.
Claim 6
Dependent Claim
26 words
The array as defined by claim 4 wherein said diode configurations are TRAPATT diodes formed in selectively defined regions of a pair of contiguous semiconductor bodies.
Claim 7
Dependent Claim
19 words
The array as defined by claim 1 wherein said first and second set of diodes comprise mesa type devices.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |