| 摘要 |
PURPOSE:To obtain an antenna system whose loss is small which is resonated to plural frequencies even when a difference between plural transmission and/or reception frequencies is large in the antenna of one frequency resonance. CONSTITUTION:The antenna system is a system able t6 send/receive a signal of plural transmission and/or reception frequencies by using a one-frequency resonance antenna. A capacitive or inductive reactance component of the one- frequency resonance antenna at resonance is cancelled by using matching circuits 8A, 8B between the antenna 1 and plural resonance circuits 9A, 9B. |
