US3733694A - Procedure for sealing waveguide nozzles - Google Patents

Procedure for sealing waveguide nozzles Download PDF

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Publication number
US3733694A
US3733694A US00154281A US3733694DA US3733694A US 3733694 A US3733694 A US 3733694A US 00154281 A US00154281 A US 00154281A US 3733694D A US3733694D A US 3733694DA US 3733694 A US3733694 A US 3733694A
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US
United States
Prior art keywords
waveguide
nozzle
nozzles
polytetrafluoroethylene
sealing
Prior art date
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
Application number
US00154281A
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English (en)
Inventor
J Vlietstra
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.)
HOLLANDSE SIGNAALAPP NV
Nv Hollandse Signaalapp nl
Original Assignee
HOLLANDSE SIGNAALAPP NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HOLLANDSE SIGNAALAPP NV filed Critical HOLLANDSE SIGNAALAPP NV
Application granted granted Critical
Publication of US3733694A publication Critical patent/US3733694A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/0283—Apparatus or processes specially provided for manufacturing horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/08—Dielectric windows
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49016—Antenna or wave energy "plumbing" making

Definitions

  • ABSTRACT Waveguide nozzles are sealed by means of polytetrafluoroethylene strips, whose dimensions correspond with those of the waveguide nozzles to be sealed.
  • the edges of a polytetrafluoroethylene strip are provided with a film of solderable material. The strip is soldered to a waveguide nozzle using said film.
  • the invention relates to a procedure for sealing waveguide nozzles by means of polytetrafluoroethylene.
  • a third disadvantage of the usual sealing method is that leakage will readily occur when gases are used such as freon to reduce the disruptive voltage in waveguide systems.
  • waveguide nozzles are sealed by soldering a polytetrafluoroethylene strip, whose dimensions correspond with those of the wave guide nozzle to be'sealed and whose edges are provided with a film of solderable material, to the waveguide nozzle using said frame.
  • waveguide and waveguide nozzle are denoted by l and 2 respectively.
  • Waveguide nozzle 2 is sealed by means of polytetrafluoroethylene strip 3, whose dimensions correspond with those of the waveguide nozzle to be sealed and whose edges 4 are provided with a film 5 consisting of solderable material.
  • the polytetrafluoroethylene strip 3 is soldered to the waveguide nozzle 2 using said film 5.
  • Film 5 is constituted by a copper layer which is provided with a lead-tin layer by means of electroplating.
  • the copper under-layer of film 5 can be obtained, starting from polytetrafluoroethylene to which a copper foil is glued and pressed, by removing the central surface by etching.
  • the waveguide nozzle is used in an antenna system located at a platform to be stabilized, it is recommended to manufacture the waveguide nozzle from a material that is as light as possible. Therefore, aluminum was chosen as material for the waveguide nozzle.
  • the edge 6 of the waveguide nozzle should be bronzed and then be provided with a lead-tin layer by means of electroplating. If the heavier copper or brass had been chosen as material for the waveguide nozzle, it would have sufficed to apply a lead-tin layer by means of electroplating.
  • the waveguide nozzle is provided with a soldering flux (resin) and pre-tin plated by immersion in a tin bath of approximately 250C;
  • soldering flux is applied to the polytetrafluoroethylene strip provided with film 5 and the strip is laid down flat;
  • the waveguide nozzle is drawn from the tin bath such that the tin can lead off properly; then it is pressed to the polytetrafluoroethylene strip;
  • the whole is cleaned in a bath, consisting of a mixture of cutting oil, benzene and isopropanol and degreased in freon vapor.
  • the above described way for sealing waveguide nozzles can also be applied for fitting pressure windows in waveguides. It is known to separate waveguide parts containing gas from waveguide parts lacking this gas, which is done by glueing a plastic partition, such as rexolyte, in the waveguide. It is also known to clamp a mica sheet between two waveguide nozzles provided with flanges and to seal the whole gastight using rubber sealing rings. The difficulties and drawbacks occurring with these known ways are similar to those occurring with the sealing of waveguide nozzles. Here too, a solution is offered by soldering a polytetrafluoroethylene strip, whose edges are provided at both sides with a film of solderable material, to both waveguide nozzles.
  • a method for sealing a waveguide nozzle by soldering a polytetrafluoroethylene strip having edge dimensions corresponding with confronting dimensions of said waveguide nozzle comprising forming a copper film along said edges of said polytetrafluoroethylene strip, electroplating a lead-tin layer upon said copper layer, adding solder flux to said lead-tin layer, pretinning the edges of said waveguide nozzle by immersing the same in a tin bath at approximately 250C, removing said waveguide nozzle from said tin bath, allowing the surplus tin to drip off, and pressing the edges of said waveguide nozzle to said polytetrafluoroethylene strip.
  • a method for sealing a waveguide nozzle as waveguide nozzle comprising bronzing the edges of claimed in claim 1, wherein said waveguide nozzle acid waveguide nozzle and electroplating said bronzed sentially consists of aluminum and comprises additional edges with a lead-tin layer. steps prior to the step of pre-tinning the edges of said

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
US00154281A 1970-07-02 1971-06-18 Procedure for sealing waveguide nozzles Expired - Lifetime US3733694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7009767A NL7009767A (enrdf_load_stackoverflow) 1970-07-02 1970-07-02

Publications (1)

Publication Number Publication Date
US3733694A true US3733694A (en) 1973-05-22

Family

ID=19810480

Family Applications (1)

Application Number Title Priority Date Filing Date
US00154281A Expired - Lifetime US3733694A (en) 1970-07-02 1971-06-18 Procedure for sealing waveguide nozzles

Country Status (8)

Country Link
US (1) US3733694A (enrdf_load_stackoverflow)
BE (1) BE768500A (enrdf_load_stackoverflow)
CA (1) CA954387A (enrdf_load_stackoverflow)
CH (1) CH519798A (enrdf_load_stackoverflow)
DE (1) DE2132242A1 (enrdf_load_stackoverflow)
FR (1) FR2097132A1 (enrdf_load_stackoverflow)
GB (1) GB1296298A (enrdf_load_stackoverflow)
NL (1) NL7009767A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2405563A1 (fr) * 1977-10-05 1979-05-04 Endress Hauser Gmbh Co Antenne pour micro-ondes
US4591088A (en) * 1983-05-31 1986-05-27 Hughes Aircraft Company Solder reflow process for soldering shaped articles together
EP0457625A3 (en) * 1990-05-18 1992-08-12 Inax Corporation Dustproofing film for waveguide and method for production thereof
EP0222586B1 (en) * 1985-11-05 1995-01-18 Daiso Co., Ltd. Polyether polymer or copolymer, monomer therefor, and process for production thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT210401Z2 (it) * 1987-06-11 1988-12-30 Irte Spa Illuminazione a tromba per antenne a riflettore con diagramma di irradiazione rettangolare.
DE4140841A1 (de) * 1990-12-20 1992-07-02 Siemens Ag Mikrowellen-richtfunkantenne
GB2458663B (en) * 2008-03-26 2012-11-21 Thales Holdings Uk Plc Radome

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995806A (en) * 1957-10-08 1961-08-15 Gen Electric Co Ltd Methods of manufacturing waveguides
US3101460A (en) * 1957-05-07 1963-08-20 Microwave Ass Hermetically sealed waveguide window with non-sputtering iris
US3201296A (en) * 1959-04-09 1965-08-17 Timothy J Kilduff Method of making a waveguide window
US3210699A (en) * 1961-12-21 1965-10-05 Nippon Electric Co Ceramic sealed window
US3293065A (en) * 1965-03-29 1966-12-20 Libbey Owens Ford Glass Co Method of coating glass for subsequent soldering
US3372471A (en) * 1963-10-26 1968-03-12 Int Standard Electric Corp Method of manufacturing microwave components
US3602979A (en) * 1970-01-28 1971-09-07 Nasa Bonding of reinforced teflon to metals

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101460A (en) * 1957-05-07 1963-08-20 Microwave Ass Hermetically sealed waveguide window with non-sputtering iris
US2995806A (en) * 1957-10-08 1961-08-15 Gen Electric Co Ltd Methods of manufacturing waveguides
US3201296A (en) * 1959-04-09 1965-08-17 Timothy J Kilduff Method of making a waveguide window
US3210699A (en) * 1961-12-21 1965-10-05 Nippon Electric Co Ceramic sealed window
US3372471A (en) * 1963-10-26 1968-03-12 Int Standard Electric Corp Method of manufacturing microwave components
US3293065A (en) * 1965-03-29 1966-12-20 Libbey Owens Ford Glass Co Method of coating glass for subsequent soldering
US3602979A (en) * 1970-01-28 1971-09-07 Nasa Bonding of reinforced teflon to metals

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Benderly et al., A Teflon Microwave Window, The Microwave Journal, Vol. 4, No. 3, p. 101 106, March, 1961. *
Brown, Charles W., Soldering Hookup Wire Insulated With Teflon Resins, The Journal of Teflon, Vol. 3, No. 4, April, 1962, pp. 1, 4 and 5. *
Hodges, August D., Electroplating Parts of Teflon : It Can Be Done, The Journal of Teflon, May June, 1967, pp. 4 5. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2405563A1 (fr) * 1977-10-05 1979-05-04 Endress Hauser Gmbh Co Antenne pour micro-ondes
US4591088A (en) * 1983-05-31 1986-05-27 Hughes Aircraft Company Solder reflow process for soldering shaped articles together
EP0222586B1 (en) * 1985-11-05 1995-01-18 Daiso Co., Ltd. Polyether polymer or copolymer, monomer therefor, and process for production thereof
EP0457625A3 (en) * 1990-05-18 1992-08-12 Inax Corporation Dustproofing film for waveguide and method for production thereof

Also Published As

Publication number Publication date
CA954387A (en) 1974-09-10
NL7009767A (enrdf_load_stackoverflow) 1972-01-04
CH519798A (de) 1972-02-29
BE768500A (nl) 1971-11-03
FR2097132A1 (fr) 1972-03-03
DE2132242A1 (de) 1972-02-03
GB1296298A (enrdf_load_stackoverflow) 1972-11-15

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