US5187449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coplanar transmission line millimeter radiation source
Assignee: International Business Machines Corp
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Filing: 1992-02-06
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Granted: 1993-02-16
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Expires: 2012-02-06
Abstract
Abstract A structure for guiding millimeter wave radiation employs a resonant coplanar transmission line on a transparent substrate. A very short, picosecond, pulse is generated on the transmission line. By having the upper half plane air, the pulse will radiate into the substrate and be guided as millimeter wave from a distributed source and formed as a point source of radiation.
Inventors
- 👤 Paul G. May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:01
CPC Classifications
H; H03; H03B; H03B11/00; H03B17/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
A system for generating millimeter wave radiation comprising: a substrate having a thickness approximately equal to the millimeter wave radiation wavelength, a coplanar transmission line on said substrate, and means to produce short pulses on said transmission line which radiate into said substrate.
Claim 2
Independent Claim
43 words
A system for generating millimeter wave radiation comprising: a substrate having a thickness approximately equal to the millimeter wave radiation wavelength, a coplanar transmission line on said substrate, and means to produce short pulses on said transmission line which radiate into said substrate.
Claim 3
Dependent Claim
10 words
The system of claim 1 wherein said substrate is Sapphire.
Claim 4
Dependent Claim
18 words
The system of claim 1 wherein said substrate has a thickness of approximately equal to the radiation wavelength.
Claim 5
Dependent Claim
17 words
The system of claim 3 wherein said coplanar transmission line is connected across a high frequency device.
Claim 6
Dependent Claim
51 words
The system of claim 3 wherein said transmission line is deposited on polycrystalline silicon and, said means to produce short pulses generates electrical pulses which are produced on said transmission line by impingement of short optical laser pulses where a wavelength of said laser pulses λ is less than 1 micron.
Claim 7
Dependent Claim
52 words
The system of claim 3 wherein said transmission line is deposited on polycrystalline silicon and whose length is such that a semiconductor laser with a particular modulation frequency will produce a wave on the transmission line so that round trip time of electrical pulse is equal to repetition rate of laser modulation.
Claim 8
Dependent Claim
13 words
The system of claim 3 further comprising means to bias said transmission line.
Claim 9
Dependent Claim
14 words
The system of claim 4 wherein said high frequency device is an IMPATT diode.
Claim 10
Dependent Claim
51 words
The system of claim 7 wherein said transmission line is deposited on polycrystalline silicon and, said means to produce short pulses generates electrical pulses which are produced on said transmission line by impingement of short optical laser pulses where a wavelength of said laser pulses λ is less than 1 micron.
References Cited (Backward Citations)
US4922091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-16 | 1996-08-17 | 1997-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-16 | 2000-08-17 | 2001-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-16 | 2004-08-17 | 2005-02-16 | $7700.00 | Window Closed / Lapsed |