The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 1987
Filed:
Jan. 23, 1987
Guy Bessonneau, Marny-les-Hameaux, FR;
Bernard Carnez, Magny-les-Hameaux, FR;
Henry Derewonko, Les Ulis, FR;
Joel Lepage, Longpont sur Orge, FR;
Thomson-CSF, Paris, FR;
Abstract
The invention relates to an encapsulating box for a semiconductor operating in the range 2 to 20 GHz. At these frequencies, existing boxes have a metal base, an insulating frame and a cover. Two input - output connections pass through the frame. A leak line forms between the input and output by stray capacitive coupling of the connections with the welding metal bands of the cover. The invention opposes this input - output coupling by metallization of the box, with reserves for resists around the connection passages. The metal film joining the welding metal films to the electrical earth of the base reflects the power taken by capacitive coupling on the connections. Insulation obtained: -30 db at 15 GHz. Application to ultra-high frequency components.