| 摘要 |
PROBLEM TO BE SOLVED: To reduce radiation from a non-receiving side line to a receiving side line. SOLUTION: The analog/digital shared tuner 1 comprises: a mixing circuit 14 for frequency-converting an RF signal into an IF signal; a digital signal line 17 (bold line in the figure) formed on a first layer (A layer 5A herein) of a multi-layered substrate for transmitting an IF signal corresponding to digital broadcast; and an analog signal line 18 (bold line in the figure) formed on a second layer (D layer 5D herein) at a side separated from the first layer with respect to a GND layer (B layer 5B herein) that is a grounded layer, on the multi-layered substrate 5 for transmitting an IF signal corresponding to analog broadcast. COPYRIGHT: (C)2009,JPO&INPIT
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