| 摘要 |
In a surface acoustic wave device (100), a first surface acoustic wave filter (101) including at least two interdigital transducers (IDTs) (105-107) arranged along a surface acoustic wave propagation direction on a piezoelectric substrate, and a second surface acoustic wave filter (102) including at least two interdigital transducers (IDTs) (105'-107') arranged along the surface acoustic wave propagation direction on a piezoelectric substrate, the input terminals of the first and second surface acoustic wave filters (101,102) are electrically connected to each other and to an unbalanced signal terminal (112) via a common connection point (110), the output terminals of the surface acoustic wave filters are connected to balanced signal terminals (113,114), respectively, and a delay line (117) is introduced between the common connection point (110) and the first surface acoustic wave filter (101) on the piezoelectric substrate. |
