High-frequency communication apparatus and method of manufacturing the same

• Main Authors: KOSHIZAKA ATSUSHI, YOKOYAMA MIZUHO, KAWAHARA KEIJI, OOUCHI SHIROU
• Format: Patent
• Language: English
• Published: 23.03.2004
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; SEMICONDUCTOR DEVICES; TRANSMISSION; WAVEGUIDES

A high-frequency communication apparatus has a case containing a transmitter-receiver including circuit elements. A functional structure capable of confining radiation energy radiated by unnecessary radio wave source to prevent the radiation energy from interfering with the operations of the transmitter-receiver is formed on at least one of the walls of the case by forming a plurality of projections in regular arrangement by press working. The circuit elements of the transmitter-receiver are packed in the case to suppress the undesired electromagnetic coupling of internal and external electromagnetic waves with the circuit elements of the transmitter-receiver.