MOUNTING DEVICE FOR HIGH FREQUENCY MICROWAVE DEVICES
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Accused Products
Abstract
In a package mounting structure for mounting a package on a case, wherein the package internally incorporates at least one of a high-frequency transistor, MIC and MMIC used in the microwave to millimeter-wave band, and a base thereof is formed of metal and serves as ground, an electrically conductive sheet having excellent thermal conductivity and exhibiting restorability and having a size identical with that of the base of the package is laid on the case at a package-bearing location, the package and sheet are fastened together by two or more screws, and the sheet is mounted on the case while it is pressed by a pressing force of 10 N/cm2 or greater owing to fastening.
32 Citations
9 Claims
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1-2. -2. (canceled)
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3. A package mounting structure for mounting a package on a case, the package internally incorporating at least one of a high-frequency transistor, MIC and MMIC used in the microwave to millimeter-wave band, a base thereof being formed of metal and serving as ground, comprising:
- an electrically conductive sheet having thermal conductivity and exhibiting restorability, wherein in a case where steps are present between a package-bearing location and circuit-board-bearing location on the case, step portions, which are among step portions on four sides of the package-bearing location and through which microwaves do not pass, are inclined, said sheet is laid on the case on the entirety of the package- and circuit-board-bearing locations, and each of the package and circuit board and the sheet are fastened together and attached to the case by two or more screws.
- View Dependent Claims (4)
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5. A mounting structure for mounting a superconducting circuit board in a metal case, comprising:
- an electrically conductive sheet having thermal conductivity and exhibiting restorability wherein said sheet is laid on the bottom of a box-shaped metal case, a superconducting circuit board is placed on the sheet, and said superconducting circuit board and sheet are fastened together and attached to the metal case by two or more screws.
- View Dependent Claims (6, 7, 8)
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9. (canceled)
Specification