| In recent years,the application of high power ultra-wideband pulse radiant source in military and space makes people extraordinarily pay attention to.To full play finer application in electromagnetism field of electromagnetic wave of high power,need one high to gain,directionality strong transmission aerial that goes out electromagnetic wave,so the study on aerial is particularly important.This paper carries on a deep research to the aerial which belongs to its radiation transmission system,brings forward an 4×4 antenna array which is composed of 16 electric-magnetic viberator combined UWB antenna to compose the radiation.First through the research determine the structure of electric-magnetic viberator combined antenna, and elaborated its design's principle. Carries on the simulation afterward with the ANSYS10.0 finite element analysis software to it, obtains this kind of antenna to be possible to radiate the high power ultra-wide band signal effectively. Then conducts the research to the array antennas as the radiant transmitting antenna, by changing the 4×4 equidistant planar array element spacing and different array of element phase simulation analysis that the relative optimal design.. Finally come to the conclusion that: Firstly, the increase in the same plane of the array element spacing, make 4×4 array antenna pattern narrowed, but the pitch will have a more side lobe; Secondly, change the incentive different array element phase of the antenna array little effect on the antenna array directional diagram, but to a certain extent, can increase the gain antenna array.. Passes through to the radiant transmitting antenna request overall evaluation, preliminary determination take spacing asλ/3 spacing 4×4 array antennas relatively best choices. |
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