Portable radio with coplanar ground and atenna conductive films formed on the inner surface of the case

U.S. Patent Number: 5394160

Abstract: In a portable radio communication apparatus comprising an insulating case having an inner surface and a printed board housed in the insulating case, an antenna conductive film is coated on a predetermined region of the inner surface of the insulating case. A conductive ground film is coated on the remaining region of the inner surface of the insulating case with a constant gap from the outer periphery of the antenna. A first conductive member connects the antenna film with the conductive ground film. A plurality of second conductive members connect the conductive ground film with a ground pattern of a radio communication circuit on the printed board. A feeding member connects the antenna with an antenna terminal pad of the radio communication circuit. The second conductive members and feeding member are conductive rods.

Inventors: Iwasaki; Hiroyuki (Tokyo, JP), Yokoyama; Yukio (Tokyo, JP)

Assignee: NEC Corporation (Tokyo, JP)

Application Number: 07/940,453

Issued: 1995-02-28

Expired: 2007-02-28

Classes: 343/702 ; 343/767; 343/841

Field of search: 343/702,769,846,767,841

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