| 摘要 |
PROBLEM TO BE SOLVED: To provide a chip-type magnetostatic wave filter, which is used for a mobile communication terminal in a microwave band and a semi-microwave band, and is capable of omitting a yoke and a permanent magnet, thereby enabling miniaturization of the terminal, and to provide a printed wiring board using the same. SOLUTION: The chip-type magnetostatic wave filter comprises a single- crystal substrate 2, a garnet film 11 having grown on the substrate 2 by crystal growth, antennas 12, 12 provided on the surface of either the substrate 2 or the film 11, and connection electrodes 14 provided on the same surface as that on which the antennas 12, 13 are provided. In the filter, the film 11 has square magnetic loop characteristics and exhibits a latching operation. COPYRIGHT: (C)2003,JPO
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