Easily-achievable double-antenna directional sending device
2012
An easily-achievable double-antenna directional sending device relates to a banded directional wave beam sending device applicable to banded channels and using double antenna same-phase for sending signals. Common banded channel application environments comprise radio wave propagation environments required by facilities of corridors, highways, railways and the like. The double-antenna directional sending device can be used in banded channel environments of radio frequency bands of mobile communication and the like and has wide application values. A mathematical expression forming banded directional wave beam sending can be derived through a signal sending expression by double antennae with same-phase feed and at an interval of 1/2 wireless carrier frequency wavelengths, and a schematic diagram of the easily-achievable double-antenna directional sending device can be given according to the mathematical expression. A wave beam simulation method is used for proving the effectiveness of the device for forming banded directional wave beams. Compared with a single-antenna sending device, the double-antenna directional sending device can improve the power utilization rate greatly, and reduce interference outside banded channels; and compared with a phased-array antenna directional sending device, the double-antenna directional sending device can reduce the engineering cost greatly, has the advantages of being simple and easy to achieve, and is likely to be popularized.
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