RESONATOR, FILTER, LAMINATED RF DEVICE AND COMMUNICATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To solve a problem wherein a degree of freedom in circuit design is a little in the field of a communication apparatus such as a portable telephone terminal. SOLUTION: The resonator is provided with microstrip lines 11a and 11b and coplanar lines 21a and 21b electrically connected with the microstrip lines 11a and 11b, and the microstrip lines 11a and 11b and the coplanar lines 21a and 21b are transmission lines of different kinds.