PURPOSE: To reduce the spurious radiation and to improve the gain by providing a conductor connecting ground conductors so as to surround part or all the surrounding of a feeder of the connection conductor to connect a resonance element and the feeder.
CONSTITUTION: A ground conductor 8 penetrating a 2nd dielectric base 2 and a 3rd dielectric base 3 is provided to connect a resonance element 7 and a feeding circuit network 4 fed to the resonance element 7 and a ground conductor 6 is removed at a position where the connection conductor 8 is provided. Then in order to connect the ground conductors 5, 6, the connection conductor 9 penetrating the 1st dielectric base 1 and the 2nd dielectric base 2 is provided to part or all the surrounding of the feeder circuit network 4 connected to the connection conductor 8. Thus, spurious radiation from the connection conductor 8 connecting the resonance element 7 and the feeder 4 in a direction of a plane of the board is shielded by the connection conductor 9 connecting the ground conductors 5, 6 without limit of the shape of the feeder 4 due to the arrangement of the resonance element 7. Thus, the spurious radiation is reduced and the gain is improved.
HOSHINO NORITOSHI
IYAMA HIROYUKI
KADO SEIJI
YAMAGUCHI YUTAKA
JAPAN BROADCASTING CORP
| JPS6356004A | 1988-03-10 | |||
| JPS6147508B2 | 1986-10-20 |