| 摘要 |
A waveguide is provided on a circuit board thereof with two printed probes that are perpendicular to and spaced from each other by a predetermined distance to receive electric waves guided into the waveguide in two different directions. The two probes are separately located in two rectangular patterns that are provided outside a round pattern. The two rectangular patterns are separately located at a lower or an upper side and to a lateral side of the round pattern and both have a feed opening provided at an edge adjacent to the round pattern. Thus, it is possible to obtain a good cross-polarization isolation between the two probes for them to more effectively receive electric waves without interfering with each other.
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