| 摘要 |
PROBLEM TO BE SOLVED: To degrade a low-pass attenuation amount by increased resistance of a connection means generated due to densification of mounting. SOLUTION: A resonator is connected in parallel to at least one resonator connecting with a serial arm in a resonator type filter having the serial arm and a parallel arm. At this time, a resonance frequency of the resonator connecting in parallel is substantially identical to the resonance frequency of the resonator connecting with the parallel arm. COPYRIGHT: (C)2007,JPO&INPIT
|
