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AssigneeRaytheon Company
InventorsAlan L. Kovacs, Matthew H. Peter, Kurt S. Ketola, Jacques F. Linder
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A thin film hydrogen getter and EMI shielding are provided for protecting GaAs circuitry sealed in an hermetic package. The thin film getter comprises a multilayer metal film that is deposited by vacuum evaporation techniques onto a conductive metal, such as aluminum or copper, that serves as the EMI shielding. The conductive layer is first formed on an interior surface. The multilayer hydrogen getter film comprises (1) a titanium film and (2) a palladium film that is deposited on the titanium film. Both the titanium and the palladium are deposited during the same coating process run, thereby preventing the titanium from being oxidized. The palladium continues to prevent the titanium from being oxidized once the getter is exposed to the atmosphere. However, hydrogen is easily able to diffuse through the palladium into the titanium where it is chemically bound up, since palladium is highly permeable to hydrogen.
A combination of (a) a hydrogen getter for gettering hydrogen evolved from packaging materials employed in a device comprising hermetically-sealed GaAs integrated circuitry employing at least one interconnect frame and (b) an EMI shield for shielding internal signals, comprising:
A method for fabricating a combination of (a) a hydrogen getter for gettering hydrogen evolved from packaging materials employed in a device comprising hermetically-sealed GaAs integrated circuitry employing at least one interconnect frame and (b) an EMI shielding for shielding internal signals, said method comprising:
A hydrogen getter for gettering hydrogen evolved from packaging materials employed in a transmit/receive module configured to transmit and receive electromagnetic radiation over a predetermined portion of the electromagnetic spectrum, said transmit/receive module comprising a least one frame component formed as a single piece from a synthetic resin dielectric material, said frame component configured to support a plurality of electrical connectors, said hydrogen getter comprising a thin film coating on at least one surface of said frame component, said thin film coating comprising:
Dependencies are inferred from the claim text.