Hermetic aluminum radio frequency interconnection and method for making
Abstract
The present invention provides a light-weight, hermetic coaxial radio-frequency (RF) interconnection having an electrically conductive outer housing made of aluminum or an aluminum alloy, a central electrical conductor made of ferrous or non-ferrous material, and a cylinder of dielectric material comprising a low-melting-temperature, high-thermal-expansion aluminophosphate glass composition for hermetically sealing between the aluminum-alloy outer housing and the ferrous or non-ferrous center conductor. The entire RF interconnection assembly is made permanently hermetic by thermally fusing the center conductor, glass, and housing concurrently by bringing the glass to the melt point by way of exposure to an atmospheric temperature sufficient to melt the glass, less than 540.degree. C., but that does not melt the center conductor or the outer aluminum or aluminum alloy housing. The composition of the glass used is controlled to provide a suitable low dielectric constant so that an appropriate electrical characteristic impedance, for example 50 ohms, can be achieved for an electrical interconnection that performs well at high radio frequencies and also provides an interconnection maintaining a relatively small physical size.
- Inventors:
-
- Albuquerque, NM
- Rolla, MO
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 872911
- Patent Number(s):
- 6037539
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- hermetic; aluminum; radio; frequency; interconnection; method; provides; light-weight; coaxial; radio-frequency; rf; electrically; conductive; outer; housing; alloy; central; electrical; conductor; ferrous; non-ferrous; material; cylinder; dielectric; comprising; low-melting-temperature; high-thermal-expansion; aluminophosphate; glass; composition; hermetically; sealing; aluminum-alloy; center; entire; assembly; permanently; thermally; fusing; concurrently; bringing; melt; exposure; atmospheric; temperature; sufficient; 540; degree; controlled; provide; suitable; constant; appropriate; characteristic; impedance; example; 50; ohms; achieved; performs; frequencies; maintaining; relatively; physical; size; hermetically sealing; physical size; electrical interconnection; dielectric constant; material comprising; outer housing; radio frequency; electrically conductive; temperature sufficient; glass composition; aluminum alloy; dielectric material; electrical conductor; center conductor; phosphate glass; characteristic impedance; atmospheric temperature; outer aluminum; radio frequencies; electrical characteristic; hermetically seal; electrical interconnect; /174/
Citation Formats
Kilgo, Riley D, Kovacic, Larry, and Brow, Richard K. Hermetic aluminum radio frequency interconnection and method for making. United States: N. p., 2000.
Web.
Kilgo, Riley D, Kovacic, Larry, & Brow, Richard K. Hermetic aluminum radio frequency interconnection and method for making. United States.
Kilgo, Riley D, Kovacic, Larry, and Brow, Richard K. Sat .
"Hermetic aluminum radio frequency interconnection and method for making". United States. https://www.osti.gov/servlets/purl/872911.
@article{osti_872911,
title = {Hermetic aluminum radio frequency interconnection and method for making},
author = {Kilgo, Riley D and Kovacic, Larry and Brow, Richard K},
abstractNote = {The present invention provides a light-weight, hermetic coaxial radio-frequency (RF) interconnection having an electrically conductive outer housing made of aluminum or an aluminum alloy, a central electrical conductor made of ferrous or non-ferrous material, and a cylinder of dielectric material comprising a low-melting-temperature, high-thermal-expansion aluminophosphate glass composition for hermetically sealing between the aluminum-alloy outer housing and the ferrous or non-ferrous center conductor. The entire RF interconnection assembly is made permanently hermetic by thermally fusing the center conductor, glass, and housing concurrently by bringing the glass to the melt point by way of exposure to an atmospheric temperature sufficient to melt the glass, less than 540.degree. C., but that does not melt the center conductor or the outer aluminum or aluminum alloy housing. The composition of the glass used is controlled to provide a suitable low dielectric constant so that an appropriate electrical characteristic impedance, for example 50 ohms, can be achieved for an electrical interconnection that performs well at high radio frequencies and also provides an interconnection maintaining a relatively small physical size.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}