US4605916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transverse electromagnetic cells adapted for electromagnetic pulse testing
Assignee: STATE OF ISRAEL MINISTRY OF DEFENSE RAFAEL ARMAMENT AUTHORITY HAIFA
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Filing: 1984-03-22
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Granted: 1986-08-12
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Expires: 2004-03-22
Abstract
Abstract A transverse electromagnetic (TEM) cell adapted for electromagnetic pulse (EMP) testing, comprises an adapter assembly at each of the tapered ends of the metal shielded enclosure for enabling the cell, including the connectors, to withstand the high voltage pulse of EMP testing while maintaining the continuity of the characteristic impedance. The adapter assembly at each end of the cell comprises outer and inner electrical conductors connected to the shielded enclosure and septum plate, respectively, and an insulating member which includes a first insulating section between the inner and outer conductors, and a second insulating section comprised of a plurality of inclined plates between the tapered end of the shielded enclosure and the septum plate. The adapter assembly at one end is to be connected either to an EMP generator or, with a slight modification, to a standard radio-frequency, continuous-wave generator; and the adapter assembly at the opposite end is to be connected to a load.
Inventors
- 👤 Ahikam Tehori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/08; G01R29/0807; G01R29/0814; G01R29/0821; G01R29/0828; H; H05; H05K; H05K9/00; H05K9/0069
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
210 words
A transverse electromagnetic (TEM) cell adapted for electromagnetic pulse (EMP) testing, comprising: an outer metal shielded enclosure for enclosing the equipment to be tested and having a longitudinal axis and opposite tapered ends each defined by a plurality of inclined walls; an inner metal septum plate extending along the longitudinal axis of the shielding enclosure; and a respective connector assembly connected to each of the two tapered ends of the shielded enclosure for connection to a generator and a load, respectively; each of said connector assemblies comprising; an outer electrical conductor connected to a respective tapered end of the shielded enclosure; an inner electrical conductor connected to a respective end of the septum plate; and an insulating member having a first insulating section extending between the inner and outer conductors of the connector assembly, and a second insulating section extending between the tapered end of the shielded enclosure and the septum plate; said second insulating section of the insulating member comprising a plurality of insulating plates, one for each of said plurality of inclined walls, each plate being joined at one end to said first insulating section of the insulating member and extending therefrom substantially parallel to its respective inclined wall at the respective tapered end of the shielded enclosure.
Claim 2
Dependent Claim
210 words
A transverse electromagnetic (TEM) cell adapted for electromagnetic pulse (EMP) testing, comprising: an outer metal shielded enclosure for enclosing the equipment to be tested and having a longitudinal axis and opposite tapered ends each defined by a plurality of inclined walls; an inner metal septum plate extending along the longitudinal axis of the shielding enclosure; and a respective connector assembly connected to each of the two tapered ends of the shielded enclosure for connection to a generator and a load, respectively; each of said connector assemblies comprising; an outer electrical conductor connected to a respective tapered end of the shielded enclosure; an inner electrical conductor connected to a respective end of the septum plate; and an insulating member having a first insulating section extending between the inner and outer conductors of the connector assembly, and a second insulating section extending between the tapered end of the shielded enclosure and the septum plate; said second insulating section of the insulating member comprising a plurality of insulating plates, one for each of said plurality of inclined walls, each plate being joined at one end to said first insulating section of the insulating member and extending therefrom substantially parallel to its respective inclined wall at the respective tapered end of the shielded enclosure.
Claim 3
Dependent Claim
60 words
The cell according to claim 1, wherein each tapered end of the shielded enclosure comprises four inclined walls, which tapered ends terminate in flanges extending perpendicularly to the axis of said shielded enclosure, said outer conductor of each connector assembly being formed with a complementary flange around its periphery which is connected to the respective flanges of the shielded enclosure.
Claim 4
Dependent Claim
27 words
The cell according to claim 1, wherein said plurality of insulating plates of said insulating member are integrally formed with said first section of said insulating member.
Claim 5
Dependent Claim
56 words
The cell according to claim 1, wherein said outer electrical conductor includes a metal sleeve having a bore therethrough for receiving the inner conductor of the connector assembly, one end of said bore being of square cross-section, the first insulating section of the insulating member including an insulation portion of square cross-section received within said bore.
Claim 6
Dependent Claim
48 words
The cell according to claim 4, wherein the end of said bore opposite to said one end in said metal sleeve is of circular cross-section, the end of the first section of the insulating member corresponding to said opposite end of said bore also being of circular cross-section.
Claim 7
Dependent Claim
57 words
The cell according to claim 5, wherein said outer electrical conductor of the connector assembly includes a second metal sleeve attached to the said opposite end of said first-mentioned metal sleeve, said second metal sleeve being formed with a bore therethrough of circular cross-section for receiving said circular-cross-section end of the first section of the insulating member.
Claim 8
Dependent Claim
85 words
The cell according to claim 1, wherein in each connector assembly said inner electrical conductor comprises a connector plate formed with a plurality of fastener openings for attachment to the septum plate of said shielded enclosure; the second insulating section of the insulating member being disposed between said connector plate and the respective tapered end of the shielded enclosure; said connector plate further including a stem passing through both sections of the insulating member for connection to a respective inner conductor of a coaxial cable.
Claim 9
Dependent Claim
30 words
The cell according to claim 7, wherein one end of said stem is of square cross-section and is received within a bore of square cross-section formed through said insulating member.
Claim 10
Dependent Claim
24 words
The cell according to claim 8, wherein said stem is formed with a bore for receiving the inner conductor of a coaxial cable connector.
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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |