| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress and prevent the generation of sprious or noise caused by transmitting waves within a receiving band having a simple configuration. SOLUTION: A casing part 2 is extended on the opposite side of an opening part 4 of a waveguide part 1, a circuit board 3 for transmitting is located on the surface of these waveguide part 1 and the casing part 2, and transmitting waves outputted from the circuit board 3 for transmitting are converted to the propagation mode of the waveguide part 1 via probe 6, while a metal filter plate 9, having attenuation characteristics within a receiving frequency band, is fixed on the opening part 4, so that the sprious or noise components within the receiving frequency band contained in transmitted waves to be passed can be removed.</p> |
