| 摘要 |
PURPOSE:To decrease the height considerably, by forming a dielectric of a dielectric resonator for transmitting and receiving waves used for a car telephone set for adopting the construction fixed with an almost square bar conductor member on its upper end surface. CONSTITUTION:Plural number of square bar dielectrics 22 are fitted in a respective groove for transmitting and receiving waves on the bottom of a conductor case 21 at a prescribed interval. Said dielectrics 22 are formed to square bar shape. Thus, the same distribution of electric lines of force and the same static capacitance as those of a cylinder are obtained and the thickness is made thin. Further, a conductor member 23 of almost plate shape of a silver or copper plate made by the printed wiring technology or an adhered conductor member, is fixed on a flat end surface at the upper part of the dielectrics 22. A round part 24 is given in the broadwise direction of said conductor member 23 so as not to concentrate electric lines of force for forming a so-called Rogowskii electrode, allowing to attain the filter with less loss and high Q value. |
