| 摘要 |
PROBLEM TO BE SOLVED: To provide a tuner for diversity reception wherein high frequency isolation between two tuner circuits disposed on a common wiring board is easily secured. SOLUTION: A tuner 1 for diversity reception includes a rectangular wiring board 2 provided with external connection terminals 3, a first tuner circuit having a first integrated circuit 4, and a second tuner circuit having a second integrated circuit 5, and the integrated circuits 4 and 5 are mounted in regions shifted from each other in a lengthwise direction on the wiring board 2. One of the external connection terminals 3 is a power terminal 3a. A lead pattern 6 drawn out from the power terminal 3a onto the wiring board 2 is drawn around to respective integrated circuits 4 and 5 through a branching part 6a, and the lead pattern is drawn around so that the sum of the shortest path length of a lead pattern 6b from the branching part 6a to the first integrated circuit 4 and the shortest path length of a lead pattern 6c from the branching part 6a to the second integrated circuit 5 is sufficiently longer than an isolation distance d between both the integrated circuits 4 and 5. COPYRIGHT: (C)2009,JPO&INPIT
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