| 摘要 |
PURPOSE:To prevent large size due to the increase in number of stages of the titled dielectric resonator, difficulty in the adjustment and cost-up by providing a uniform block simple dielectric, plural dielectric resonators, a frequency adjustment pattern and a coupling quantity adjustment pattern and connecting the coupling quantity adjustment pattern to ground. CONSTITUTION:Coupling quantity adjustment patterns 15-1-15-3 are connected to ground and since a part having a maximum electric field is at zero potential, the dielectric resonators 13-1-13-4 are coupled magnetically. Thus, the lumped constant equivalent circuit is a circuit where the dielectric resonators 13-1-13-4 are coupled by inductances L13, L15 and L17. In this case, the attenuation at high frequencies is larger than the attenuation at low frequencies. If a tight attenuation standard is imposed at high frequencies, the dielectric filter is realized by the dielectric resonators 13-1-13-4 of a few number of stages and the miniaturization and adjustment are facilitated and low-cost is contrived.
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