US3373382A - Delay line with recessed support to prevent shorting by metal sputtering - Google Patents

Delay line with recessed support to prevent shorting by metal sputtering Download PDF

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Publication number
US3373382A
US3373382A US294633A US29463363A US3373382A US 3373382 A US3373382 A US 3373382A US 294633 A US294633 A US 294633A US 29463363 A US29463363 A US 29463363A US 3373382 A US3373382 A US 3373382A
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United States
Prior art keywords
delay line
insulating base
metal
line
base
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US294633A
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English (en)
Inventor
Diamand Felix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
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CSF Compagnie Generale de Telegraphie sans Fil SA
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Application filed by CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/24—Slow-wave structures, e.g. delay systems

Definitions

  • the object of the present invention is an improvement for the type of delay lines secured to an insulating base, and intended to remedy the aforementioned inconvenience.
  • the insulating base has no longer the form of a plate as in the known structures but is cut in the manner to follow the form of the periodic elements of the line.
  • a line of meander shape will therefore be secured to an insulating base also of meander shape or on a series of parallel insulating bars, an interdigital line on an insulating base in the form of interleaved combs, of a ladder or also on a series of parallel insulating bars, etc.
  • Still a further object of the present invention resides in the provision of a very high frequency wave-guiding structure of the type mentioned hereinabove which is mechanically sturdy, may be readily machined and assembled yet assures proper operation for relatively long periods of time.
  • FIGURE 1 is a partial longitudinal cross-sectional view of a prior art delay line, intended to explain the shortcomings, thereof;
  • FIGURE 2 is a partial longitudinal cross-sectional view, similar to FIGURE 1, of a delay line in accordance with the present invention
  • FIGURE 3 is a partial horizontal cross-sectional view of a delay line that may be utilized in FIGURE 2, and
  • FIGURE 4 is a partial horizontal cross-sectional view, similar to FIGURE 3, and illustrating the insulating base adapted for use with the delay line of FIGURE '3.
  • reference numeral 1 designates therein a delay line which is fixed to an insulating base 2 in the form of a plate.
  • the insulating base 2 itself is fixed to a metallic back-plate 3.
  • the sputterings of the metal of the line 1 fall on the relatively cold surface of the base 2 and form thereon a deposit 4 which short-circuits after a more or less short lapse of time the periodic elements of the delay line.
  • FIGURE 2 shows in cross section a delay line structure according to the present invention in which this inconvenience is avoided.
  • the delay line 1 for example, of copper and of meander shape, as is indicated by the horizontal cross-sectional view thereof in FIGURE 3, is no longer fixed on a plate 2 but on an insulating base 5, for example, of alumina, cut into meander shape like the line 1, the horizontal cross section of this insulating base 5 being shown in FIGURE 4.
  • the insulating base 5 is secured on a metallic back-plate 3, for example, made of copper as in FIGURE 1.
  • the manufacture of this assembly may comprise, for example, the preliminary and separate cutting of the line 1 and of the base 5, and the securing of one to the other by brazing.
  • a metallic leaf or thin plate covering an insulating plate the covering being made electrochemically, by pulverization or any other known manner.
  • the deposit 4 of FIGURE 2 is formed directly on the metal of the back-plate 3 and is insulated from the metal of the delay line 1 by the thickness of the base 5. It is therefore no longer harmful as in the preceding case.
  • an evacuated tube electron discharge device having a delay line of geometrically periodical structure subject to metal sputtering, said delay line comprising an insulating base, a series of spaced metal elements fixed on said insulating base, and a conductive support for said base, said insulating base being provided with cut-out portions in the spaces between said elements sufficient to bare the surface of said conductive support within said spaces and cause the insulating base to conform substantially to the shape of the spaced metal elements.
  • an evacuated tube electron discharge device having a delay line of geometrically periodical structure subject to lnetal sputtering, said delay line comprising an insulating base, a series of spaced metal rungs fixed to said insulating base, a conductive support for said base, said base having a shape conforming susbtantially to the shape of the spaced metal rungs including at least a series of insulating rungs each supporting a respective metal rung of said delay line, thereby leaving exposed parts of the surface of said conductive support in the spaces between said rungs.
  • an evacuated tube electron discharge device having a delay line of geometrically periodical structure subject to metal sputtering, said delay line comprising an insulating base, a series of spaced metal rungs fixed to said insulating base, a conductive support for said base, said base having a shape including at least a series of in- 4 sulating rungs each supporting a respective metal rung of said delay line, thereby leaving exposed parts of the surface of said conductive support in the spaces between said rungs, and the width of said metal rungs substantially coinciding with the width of said insulating rungs.
  • a wave-guiding structure having a plurality of geometrically periodical elements secured to an insulating base which in turn is fixed to a conductive support
  • the improvement essentially consisting of conforming the insulating base substantially to the shape of the delay elements at least in part to thereby leave exposed parts of the surface of the conductive support in the spaces between the delay elements and avoid short circuits as a result of metallic deposits caused by sputtering of the metal from the delay elements.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Particle Accelerators (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Physical Vapour Deposition (AREA)
US294633A 1962-08-23 1963-07-12 Delay line with recessed support to prevent shorting by metal sputtering Expired - Lifetime US3373382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR907603A FR1338984A (fr) 1962-08-23 1962-08-23 Perfectionnements aux lignes à retard fixées sur une base isolante

Publications (1)

Publication Number Publication Date
US3373382A true US3373382A (en) 1968-03-12

Family

ID=8785602

Family Applications (1)

Application Number Title Priority Date Filing Date
US294633A Expired - Lifetime US3373382A (en) 1962-08-23 1963-07-12 Delay line with recessed support to prevent shorting by metal sputtering

Country Status (6)

Country Link
US (1) US3373382A (enrdf_load_stackoverflow)
DE (1) DE1227566B (enrdf_load_stackoverflow)
FR (1) FR1338984A (enrdf_load_stackoverflow)
GB (1) GB1004955A (enrdf_load_stackoverflow)
NL (1) NL297019A (enrdf_load_stackoverflow)
SE (1) SE219037C1 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504223A (en) * 1967-09-07 1970-03-31 Litton Precision Prod Inc High power wide band cross field amplifier with ceramic supported helix
US3610999A (en) * 1970-02-05 1971-10-05 Varian Associates Slow wave circuit and method of fabricating same
US3610998A (en) * 1970-02-05 1971-10-05 Varian Associates Slow wave circuit and method of fabricating same
JPS50105245A (enrdf_load_stackoverflow) * 1974-01-24 1975-08-19
US3904994A (en) * 1974-11-08 1975-09-09 Us Army Meander line circuit with an interdigital ground plane
US3925738A (en) * 1974-11-08 1975-12-09 Us Army Rail or pedestal mounted meander line circuit for crossed-field amplifiers
US4074211A (en) * 1976-09-07 1978-02-14 The United States Of America As Represented By The Secretary Of The Army Dielectric substrate for slow-wave structure
CN105428189A (zh) * 2016-01-04 2016-03-23 电子科技大学 一种共面波导的慢波结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB708601A (en) * 1951-06-30 1954-05-05 Standard Telephones Cables Ltd Microwave wire and cable
US2704829A (en) * 1951-10-01 1955-03-22 Rca Corp Delay line
GB767077A (en) * 1954-03-19 1957-01-30 Sadir Carpentier Improvements in or relating to delay networks
US3173111A (en) * 1961-05-24 1965-03-09 Heinz E Kallmann Delay line
US3257629A (en) * 1961-12-11 1966-06-21 Sperry Rand Corp Delay line utilizing strip line with magnetic loading and method of making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834915A (en) * 1953-10-30 1958-05-13 Raytheon Mfg Co Traveling wave tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB708601A (en) * 1951-06-30 1954-05-05 Standard Telephones Cables Ltd Microwave wire and cable
US2704829A (en) * 1951-10-01 1955-03-22 Rca Corp Delay line
GB767077A (en) * 1954-03-19 1957-01-30 Sadir Carpentier Improvements in or relating to delay networks
US3173111A (en) * 1961-05-24 1965-03-09 Heinz E Kallmann Delay line
US3257629A (en) * 1961-12-11 1966-06-21 Sperry Rand Corp Delay line utilizing strip line with magnetic loading and method of making same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504223A (en) * 1967-09-07 1970-03-31 Litton Precision Prod Inc High power wide band cross field amplifier with ceramic supported helix
US3610999A (en) * 1970-02-05 1971-10-05 Varian Associates Slow wave circuit and method of fabricating same
US3610998A (en) * 1970-02-05 1971-10-05 Varian Associates Slow wave circuit and method of fabricating same
JPS50105245A (enrdf_load_stackoverflow) * 1974-01-24 1975-08-19
US3904994A (en) * 1974-11-08 1975-09-09 Us Army Meander line circuit with an interdigital ground plane
US3925738A (en) * 1974-11-08 1975-12-09 Us Army Rail or pedestal mounted meander line circuit for crossed-field amplifiers
US4074211A (en) * 1976-09-07 1978-02-14 The United States Of America As Represented By The Secretary Of The Army Dielectric substrate for slow-wave structure
CN105428189A (zh) * 2016-01-04 2016-03-23 电子科技大学 一种共面波导的慢波结构

Also Published As

Publication number Publication date
DE1227566B (de) 1966-10-27
FR1338984A (fr) 1963-10-04
GB1004955A (en) 1965-09-22
SE219037C1 (enrdf_load_stackoverflow) 1968-02-20
NL297019A (enrdf_load_stackoverflow)

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