| 摘要 |
PROBLEM TO BE SOLVED: To provide a tuner having a function of simultaneously receiving plural broadcasts of different broadcasting systems, wherein interference between receiving circuits of different broadcasting systems can be suppressed. SOLUTION: The tuner 1 capable of simultaneously receiving plural broadcasts of different broadcasting systems includes a multilayer board 10 using a shield layer 11 as an inner layer. With the shield layer 11 of the multilayer board 10 as a boundary, receiving circuits for receiving broadcasts of different broadcasting systems are formed respectively on a front layer substrate 12 and a back layer substrate 13 of the multilayer board 10. COPYRIGHT: (C)2009,JPO&INPIT
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