Portable radio housing with logic and RF shielding

Details Portable radio housing with logic and RF shielding Portable radio housing with logic and RF shielding

1986-01-06

1987-07-14

Tolin, G. P.

Electricity: electrical systems and devices

Miscellaneous

455301, 361399, 361413, H05K 706

Patent

active

046806768

ABSTRACT:
A portable radio housing has a shield that provides electromagnetic isolation between logic and radio boards operating on close frequencies. The radio board is positioned in a conductive frame having fours sides surrounding a central opening. A tab on the frame is connected to a power module on the radio board to sink heat from the power module. A middle shield having sides with integral spring fingers at calculated intervals is attached to the frame over the rear surface of the radio board. A logic board and rear shield are attached to the frame over the middle shield. A connector protrudes through an opening in the middle shield and interconnects the logic and radio boards. A front shield, also having sides with integral spring fingers, is attached to the frame over the front surface of the radio board. The front shield has an integral speaker baffle and tabs for holding a connector. An outer housing and keypad/display module enclose the frame. Electrostatic discharge protection is provided by connecting exposed metal parts to the frame.

REFERENCES:
patent: 1968557 (1934-07-01), Johanson
patent: 2921523 (1960-01-01), Larsen
patent: 2995686 (1961-08-01), Selvin
patent: 3029368 (1962-04-01), Wulc
patent: 3048747 (1962-08-01), Errichiello
patent: 3479622 (1969-11-01), Freer
patent: 4339628 (1982-07-01), Marcantonio et al.
patent: 4362918 (1982-12-01), Rabin
patent: 4370700 (1983-01-01), Duddles
patent: 4399487 (1963-08-01), Neumann
patent: 4419770 (1983-12-01), Yagi et al.
patent: 4455682 (1984-06-01), Masters
patent: 4599680 (1986-07-01), Gibson

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