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A frame construction for a radio telephone or the operating device of a radio telephone. The radio telephone comprises a frame on which printed circuit boards containing telephone electronics are secured on both sides of a substantially flat, electrically conductive frame plate. The frame plate toge

A frame construction for a radio telephone or the operating device of a radio telephone. The radio telephone comprises a frame on which printed circuit boards containing telephone electronics are secured on both sides of a substantially flat, electrically conductive frame plate. The frame plate together with ground foils of the printed circuit boards form EMI-shielding for the components located on the sides of the printed circuit boards which face the frame plate. The frame plate preferably has a raised edge to which a printed circuit board is secured. Radio telephone housing parts are located on the two sides of the frame plate to form the radio telephone housing.

대표청구항 ▼

A radio telephone containing telephone electronic circuitry and components, comprising: an electrically conductive frame including a frame plate with a continuous raised edge surrounding its outer periphery, said frame plate having a first face and an opposed second face; a first printed circuit boa

A radio telephone containing telephone electronic circuitry and components, comprising: an electrically conductive frame including a frame plate with a continuous raised edge surrounding its outer periphery, said frame plate having a first face and an opposed second face; a first printed circuit board having a first side substantially covered with a complete ground surface and a second opposed side having at least a first portion of said telephone electronic circuitry and components thereon; said first circuit board being mounted to said raised edge with said first face of said frame plate opposing said first portion of telephone electronic circuitry and components on said second face of said first circuit board, said ground surface of said first board extending to said raised edge and being electrically joined to said frame to form with said frame an electromagnetic interference shielding for said first portion of telephone electronic circuitry and components on said second side of said first circuit board.