| 摘要 |
PURPOSE:To reduce the heights of dielectrics and the distance between dielectric stages by obtaining a distribution constant type filter which has conductors of L/2 or L.2/3 height on a conductor surface. CONSTITUTION:External conductors 12 which is L'/2 and L'.2/3 as high as a dielectric 3 having a height of L' are provided outside the dielectric 3. Namely, the conductors 12 are provided outside the dielectric 3 for preventing a decrease in dielectric constant to confine lines of electric force in the dielectric, obtaining the effective dielectric constant. Therefore, such reltions are established as L>L' and d>d' although t=t' where L, (d), and (t) are the height, interstage distance, and interelectrode distance of this filter and L', (d), and (t'), are those of a conventional filter. |
