| 摘要 |
PURPOSE:To eliminate the effect on the noise characteristic or the like of an oscillator using a magnetic substance resonator even if the resonance frequency is changed and to improve the purity of signal and to attain broad band by adopting the constitution that an electrode is formed to a ferrite sintered body and a magnetic field is fed thereto. CONSTITUTION:The electrodes 2A, 2B are formed to the ferrite sintering body 1 and a magnetic field H is applied via an exciting coil 3. In applying the magnetic field H, a mus of the ferrite sintered body 1 is changed and in changing the strength of the magnetic field H, the mus of the body 1 and the resonance frequency is changed when the length of the magnetic resonator is made constant. The Q of the magnetic resonator is larger than the Q of the resonator including a varactor diode and the purity of signal is excellent. The variable range of the mus due to the change in the strength of the magnetic field H is large, the change in the resonance frequency is larger than that of a varactor diode and then broad band characteristic is attained. |
