US5319218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse sharpening using an optical pulse
Assignee: United States Department of the Army
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Filing: 1993-05-06
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Granted: 1994-06-07
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Expires: 2013-05-06
Abstract
Abstract A photoconductive ultra-wideband impulse generating device utilizing pulseharpening techniques to further increase its radiation frequency well above the gigahertz range while also substantially improving radiation efficiency. Such pulse sharpening provides for a radiator having a wider range of applications.
Inventors
- 👤 Anderson H. Kim
- 👤 Maurice Weiner
- 👤 Louis J. Jasper, Jr.
- 👤 Robert J. Youmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:16
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/48; G01S7/483; G01S7/484; H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57; H10; H10F; H10F30/00; H10F30/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A photoconductive ultra-wideband impulse generating device, comprising: a semiconductor substrate having at least two opposing surfaces each having a metalized electrode positioned such that electrostatic energy can be stored thereon; a power supply means for applying an electric field in a predetermined direction across aid electrodes such that said power is stored on said metalized electrodes; and an optic means for triggering the discharge of said stored energy and abruptly terminating said discharge after a predetermined interval of time, said optic means comprising a laser source optically coupled to each said surface electrode through a separate fiber cable, each said fiber cable having a different predetermined length such that light energy from said laser source passes through the shorter fiber cable to trigger said discharge and said light energy passes through said longer cable to terminate said discharge at a predetermined interval of time later.
Claim 2
Dependent Claim
145 words
A photoconductive ultra-wideband impulse generating device, comprising: a semiconductor substrate having at least two opposing surfaces each having a metalized electrode positioned such that electrostatic energy can be stored thereon; a power supply means for applying an electric field in a predetermined direction across aid electrodes such that said power is stored on said metalized electrodes; and an optic means for triggering the discharge of said stored energy and abruptly terminating said discharge after a predetermined interval of time, said optic means comprising a laser source optically coupled to each said surface electrode through a separate fiber cable, each said fiber cable having a different predetermined length such that light energy from said laser source passes through the shorter fiber cable to trigger said discharge and said light energy passes through said longer cable to terminate said discharge at a predetermined interval of time later.
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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) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |