| 摘要 |
PROBLEM TO BE SOLVED: To provide an elastic surface wave divider which can suppress deterioration of the quantity of attenuation from an antenna terminal 21 to a reception terminal 23, and also can suppress deterioration of the quantity of attenuation in isolation properties from a transmission terminal 22 to the reception terminal 23, and a communication device using it. SOLUTION: A wave divider 61, which has a plurality of elastic surface wave filters 2 and 3, is provided on the first electrode pattern 14a on the surface side of a multilayer board. The antenna terminal 21, the transmission terminal 22, and the reception terminal 23 are connected severally to the wave divider 61, on the periphery of the fourth electrode pattern 17a on the rear of the multilayer board. A strip line 33 for matching, which is made in the third electrode pattern 16a in the middle layer of the multilayer board and is connected to the antenna terminal 21, is grounded to at least one side excluding a side opposed to a side on the side of the antenna terminal 21.
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