| Summary: | 碩士 === 大葉大學 === 電信工程學系碩士班 === 92 === Generally, electromagnetic energy radiated to free space or received electromagnetic energy by free space; its propagation form is spherical wave or cylinder wave. According to spherical wave propagation characteristics, it will cause many phenomenons, as phase error or signal loss, if we made spherical wave or cylinder wave become to plane wave, it should be improved drawback as the foregoing, this is main purpose that to manufacture lens antenna in this paper.
In this paper, the parallel-metal-sheet lens is presented and designed. It is demonstrated by experiments that the newly designed parallel-metal-sheet lens possesses the effect of increasing directive gain of feed antennas approximately by 5.6 dBi and correct phase error of feed antenna. But the metal of parallel-metal-sheet lens is aluminium, so improves its structure, is added the aluminums foil to and replaced the metal aluminum by the dragon of Poly
Finally, using traditional Luneberg lens and parallel metal-sheet lens antenna to design the least novel lens antenna, as simulated and measured result, it prove the correct phase error of characteristics of novel lens antenna and traditional Luneberg lens are the same.
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