| 摘要 |
<p>PROBLEM TO BE SOLVED: To miniaturize a filter device of a dual band. SOLUTION: Dielectric resonators 9 to 15 on the side of a first duplexer are arranged in parallel and dielectric resonators 21 to 27 on the side of a second duplexer are arranged in parallel on a same circuit board 35. The resonators 9 to 15 on the side of the first duplexer and the resonators 21 to 27 on the side of the second duplexer are arranged to face each other and capacitor blocks 36, 37, a wave divider 3, etc., are arranged between the both of them.</p> |
