摘要:
A package for superconducting devices, enabling signal transmission at a small propagation delay between superconducting devices provided within a heat insulating vacuum vessel, and semiconductor devices provided outside the heat insulating vacuum vessel. The package comprises a heat insulating vacuum vessel capable of maintaining the interior thereof at a low temperature, a substrate having mounted thereon superconducting devices and disposed within the heat insulating vacuum vessel, another substrate having mounted thereon semiconductor devices and disposed outside the heat insulating vacuum vessel, and film cables electrically connecting the respective circuit patterns of these substrates. Since the thickness of the film cables are very small, the rate of influx of heat that flows into the heat insulating vacuum vessel can be limited to a low value.
摘要:
A semiconductor chip, which operates in a range of ultra-high frequency, is mounted on a package including an insulation layer on which input and output conductive patterns are formed. A metalized layer and via holes filled with conductive material are provided in the insulation layer to adjust the characteristic impedance of the conductive patterns.
摘要:
A coaxial line assembly in a package which houses a high frequency element. The assembly includes a metal wall having a hole extending through the metal wall. The metal wall has a step at substantially an intermediate portion of the hole to define a smaller diameter, inner hole portion opened to the inside of the package and a larger diameter, outer hole portion opened to the outside of the package. A lead for transmitting a high frequency signal passes through the hole and is hermetically sealed in the outer hole portion by glass filled in the outer hole portion. A sealing plate closes an opening of the inner hole portion at the step, the lead extending through the sealing plate. The sealing plate is made of a dielectric material having a dielectric constant near to that of the glass and a melting point higher than that of the glass.
摘要:
A process for making a metal wall enclosure of a package for housing an electronic element. An elongated strip, to be formed as the metal sidewall of the enclosure, and a bottom plate, for closing an open end of the metal sidewall, are formed from a sheet of metal stock. At least one aperture is selectively provided in at least one of the bottom plate and the planar metal strip. The strip is prepared for folding, such as by transverse grooves formed in the strip along predetermined fold lines corresponding to corners of the metal sidewall, to facilitate folding of the strip into the desired configuration of the metal sidewall and with the opposite ends of the strip, as folded to form the metal sidewall, in abutting relationship. The abutting ends of the metal strip, as folded to form the metal sidewall, are affixed and hermetically sealed together and the lower edge of the metal sidewall, as formed from the folded strip, is affixed and hermetically sealed to the bottom plate to complete the metal wall enclosure. The at least one aperture is at a predetermined position in the metal wall enclosure and of a size for receiving a connector for providing a connection therethrough, and thus from the exterior of the package and through the enclosure, to the electronic element housed within the package.