| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-frequency filter which has a SAW element with superior frequency temperature characteristics. SOLUTION: In a laminate dielectric substrate 1, 1st and 2nd line filters LF1 and LF2 are formed of strip line conductor films and ground conductor films, facing each other across dielectric layers and a SAW element S connected to the 1st line filter LF1, is mounted to constitute the high-frequency filter. The 1st line filter LF1 has frequency temperature characteristics having a positive gradient correcting frequency temperature characteristics of the SAW element S and the 2nd line filter LF2 is made flat as compared with the gradient of frequency temperature characteristics of the 1st line filter LF1. |
