Resonator, filter and duplexer having spirally arranged...

Details Resonator, filter and duplexer having spirally arranged... Resonator, filter and duplexer having spirally arranged...

H - Electricity

01

P

H01P 7/00 (2006.01) H01P 1/203 (2006.01) H01P 1/213 (2006.01) H01P 7/08 (2006.01)

Patent

CA 2292148

A resonator can provide good loss characteristics by effectively suppressing power losses due to an edge effect. In addition, a filter, a duplexer, and a communication device incorporating the resonator are formed. In the resonator, a plurality of spiral lines are disposed on a surface of a dielectric substrate in such a manner that the two ends of the lines are aligned on the perimeter around a central point on the substrate so that the lines do not cross each other. With this arrangement, the edge portions of the spiral lines are substantially canceled, by which power losses due to the edge effect can be effectively suppressed.

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