Apparatus for providing RFI/EMI isolation between adjacent circu

Details Apparatus for providing RFI/EMI isolation between adjacent circu Apparatus for providing RFI/EMI isolation between adjacent circu

1992-06-29

1993-10-12

Picard, Leo P.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

361818, H05K 900

Patent

active

052527824

ABSTRACT:
A sensitive circuit area on a circuit board is isolated from an adjacent located non-sensitive circuit area by surrounding the sensitive circuit area with electrically interconnected ground planes positioned on the opposite sides of the circuit board. The isolation system further includes a "clam shell" RF/IF tight shield attached to each side of the circuit board enclosing the sensitive circuit area. A partially conductive gasket is placed between the clam shell and the top and bottom circuit board surfaces to enhance isolation performance.

REFERENCES:
patent: 4739453 (1988-04-01), Kurokawa
patent: 4831498 (1989-05-01), Baba
patent: 5014160 (1991-05-01), McCoy, Jr.
patent: 5045971 (1991-09-01), Ono et al.
patent: 5107404 (1992-04-01), Tam
C. E. Dexter, "Design Considerations for Miniaturized Receivers", Watkins-Johnson Company, Tech-Notes, vol. 16, No. 5, Sep./Oct. 1989.

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