SURFACE ACOUSTIC WAVE DEVICE

PROBLEM TO BE SOLVED: To provide a surface acoustic wave (SAW) device provided with a plurality of SAW device parts the characteristics of which are improved by reducing the interference between the SAW device parts and that attains downsizing, low-profile/high functionality without making the design complicated. SOLUTION: The SAW device includes: a base board; a first SAW device part wherein one or more SAW elements and complementary circuit elements for complementing the electric characteristics of the SAW elements are mounted on a first region of a front side of the base board; and a second SAW device part wherein one or more SAW elements and complementary circuit elements for complementing the electric characteristics of the SAW elements are mounted on a second region of the front side of the base board, the SAW elements are flip-chip-mounted on the base board and the complementary circuit elements are chip components surface-mounted on the base board. When providing chip inductors and conductor lines to a border part between the first SAW device part and the second SAW device part, the inductors and the conductor lines are arranged such that the directions of the magnetic fluxes of the inductors and the extension directions of the conductor lines are respectively interlinked and in crossing (nearly orthogonal) with each other. COPYRIGHT: (C)2007,JPO&INPIT