US4507632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic wave switch
Assignee: Thales SA
•
Filing: 1982-08-23
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Granted: 1985-03-26
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Expires: 2002-08-23
Abstract
Abstract An electromagnetic wave switch is provided formed from a profiled wave-guide associated with a PIN diode, filling completely the profiled part of said guide, having a high breakdown voltage and a low thermal resistance.
Inventors
- 👤 Michel Baril
- 👤 Gilles Sillard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:23
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
An electromagnetic wave switch formed by a rectangular wave-guide having a longitudinal axis associated with a semiconductor, wherein said wave-guide has dimensions which allow propagation of millimeter waves, said wave-guide switch comprising: a step centrally formed in said wave-guide and defining a ridged space, of given volume; a bar of semiconductor material disposed in said ridged space of said wave-guide formed by said step, said bar having a high breakdown voltage and low thermal resistance wherein the volume of said bar is identical to that of said ridged space and wherein said wave-guide is formed in a first and a second part with said first part being a flat metal plate and said second part being a U-shaped metal plate on which said step is formed so that the joining together of said first and second parts form the cavity of the wave-guide and said first and second parts are insulated by a layer of insulating material.
Claim 2
Dependent Claim
157 words
An electromagnetic wave switch formed by a rectangular wave-guide having a longitudinal axis associated with a semiconductor, wherein said wave-guide has dimensions which allow propagation of millimeter waves, said wave-guide switch comprising: a step centrally formed in said wave-guide and defining a ridged space, of given volume; a bar of semiconductor material disposed in said ridged space of said wave-guide formed by said step, said bar having a high breakdown voltage and low thermal resistance wherein the volume of said bar is identical to that of said ridged space and wherein said wave-guide is formed in a first and a second part with said first part being a flat metal plate and said second part being a U-shaped metal plate on which said step is formed so that the joining together of said first and second parts form the cavity of the wave-guide and said first and second parts are insulated by a layer of insulating material.
Claim 3
Dependent Claim
37 words
The switch as claimed in claim 1, wherein said semiconductor bar is a PIN diode whose two metalized faces are respectively soldered, one to said flat metal plate and the other to said step of said guide.
Claim 4
Dependent Claim
20 words
The switch as claimed in claim 2, wherein tapering impedance transformers ensure the transitions between said wave-guide and said step.
Claim 5
Dependent Claim
36 words
The switch as claimed in claim 2, wherein the dimension of said PIN diode along said longitudinal axis is an odd multiple of a quarter of the wave-length at the central frequency of the operating band.
Claim 6
Dependent Claim
60 words
The switch as claimed in claim 1, wherein said U shaped metal plate of said guide comprising said step comprises, outside said cavity, two furrows on each side of said axis, at a given distance from said guide, said two furrows being formed to a given depth and over the whole length of the switch, thus serving as microwave traps.
Claim 7
Dependent Claim
29 words
The switch as claimed in claim 5, wherein said distance and said depth are multiples of a quarter of the wave-length at the central frequency of the operating band.
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |