| 摘要 |
PURPOSE:To easily and inexpensively receive radio waves of two kinds of polarization mode by dividing a reception face and forming a first antenna part, which receives the radio wave of a first polarization mode, on one side and forming a second antenna part, which receives the radio wave of a second polarization mode, on the other. CONSTITUTION:A reception face 1 is divided, and the first antenna part 1a which receives the radio wave of the first polarization mode is formed on one side, and the second antenna part 1b which receives the radio wave of the second polarization mode is formed on the other. For example, horizontally polarized and vertically polarized radio waves are received if the first antenna part 1a is used for the horizontal polarization mode and the second antenna part 1b is used for the vertical polarization mode. In case radio waves of two kinds of polarization mode are received in this manner, it is sufficient if one plane antenna is attached to a wall surface or a roof, and the construction is easy. The cost is reduced by the mass production effect in comparison with production of individual plane antennas of respective polarization modes, and the inexpensive plane antenna is supplied.
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