To obtain a small EBG (electromagnetic band-gap) material that does not need through holes even if it is an EBG material that operates in a low frequency band.
In the EBG material having a band-gap in a specified frequency band, piezoelectric resonators 1 are arranged on the surface of a substrate 3 one-dimensionally or two-dimensionally, and a capacitive reactance element electrically connects adjacent piezoelectric resonators to each other. In addition, any of an interdigital capacitor, a meander line and a chip capacitor is used as the capacitive reactance element. Otherwise, the piezoelectric resonators 1 are arranged on the surface of the substrate 3 one-dimensionally or two-dimensionally, and the piezoelectric resonators 1 are arranged so that distances between respective end parts can be mutually equal in interval.
COPYRIGHT: (C)2007,JPO&INPIT
KIMURA TOMONORI
MISU KOICHIRO
| JP2004129238A | 2004-04-22 |
| US5194836A | 1993-03-16 | |||
| US6924583B2 | 2005-08-02 |
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
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