| 摘要 |
A converter for receiving a satellite broadcast has a waveguide (1) for advancing a radio wave entering a waveguide tube as first and second linearly polarized waves perpendicular to each other, a first probe (9) and a second probe (6) projected into the tube of this waveguide and sequentially arranged along the advancing direction of the radio wave, a first short-circuited terminal (8) for reflecting the first linearly polarized wave and detecting the first linearly polarized wave by the first probe, a second short-circuited terminal (7) for reflecting the second linearly polarized wave and detecting the second linearly polarized wave by the second probe, and a reflecting pattern (5) (third short-circuited terminal) arranged between these first and second short-circuited terminals. When the guide wavelength of the used radio wave is set to lambda , the distance between the first short-circuited terminal and the second short-circuited terminal is set to about lambda /2, and the distance between the first short-circuited terminal and the reflecting pattern, and the distance between the reflecting pattern and the second short-circuited terminal are respectively set to about lambda /4. <IMAGE> |
