| 摘要 |
PURPOSE:To efficiently demultiplex two signals whose frequencies are different by one primary radiation feeding part, and also, to obtain a small-sized and inexpensive structure. CONSTITUTION:To a throat part of a horn 10 which can input signals of two or more different frequencies, a coaxial tube 12 having a low-pass filter 11 is connected, and the inside of the center conductor 13 of this coaxial tube 12 is hollow consisting of a circular waveguide structure which can propagate a signal of a high frequency band. Also, on the horn side end face of this center conductor 13, a dielectric rod antenna 14 for radiating efficiently the signal of a high frequency band is provided, and also, to an outside surface conductor part of the center conductor 13, a probe 15 for converting a signal of a low frequency band to a coaxial TEM mode from a TE 11 mode is attached. |
