Ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna
A horizontally polarized, circular array technology, used in specific array feeding systems, antennas, antenna arrays, etc., to solve the problems of inability to meet the needs of communication systems for antenna miniaturization, limited antenna applications, and narrow operating bandwidth. , to achieve the effect of expanding the effective coverage, improving the edge effect, and reducing the cut-off frequency
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[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0029] refer to figure 1 , the ultra-broadband horizontally polarized omnidirectional Vivaldi circular array antenna of the present invention includes a radiation unit 1 , a feed network 2 and a dielectric plate 3 . The radiation unit 1 and the feeding network 2 are printed on the upper and lower surfaces of the dielectric board 3 respectively, and the centers of the radiation unit 1 and the feeding network 2 coincide with the center of the dielectric board 3 . Among them, the radiation unit 1 adopts a sixteen-element connected Vivaldi antenna array formed by rotating a Vivaldi unit around the center of the circle, the rotation angle is 22.5 degrees, and the adjacent units are connected to each other; the feed network 2 adopts A 1:16 broadband Wilkinson power splitter and a coupled microstrip feeder, through which the electromagnetic energy is coupled to the...
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