A multi-band antenna
A multi-band antenna and antenna technology is applied in the field of satellite positioning and navigation antennas to achieve the effect of good circular polarization axis ratio and wide circular polarization beam width
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[0038] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in detail:
[0039] The present invention mainly consists of three microstrip antennas and an insulating cylinder 5 . figure 1 For the structural representation of the present invention, see figure 1 , the lower layer microstrip antenna 1, the middle layer microstrip antenna 2 and the upper layer microstrip antenna 3 are stacked sequentially from bottom to top, and at the same time, the insulating tube 5 partially surrounds the microstrip antenna. The three microstrip antennas work in three different frequency bands respectively.
[0040] In a more optimal embodiment, the present invention also has a first metal patch 4, the first metal patch 4 is evenly arranged on the upper surface of the insulating cylinder 5, and each microstrip antenna (1, 2, 3) is stacked in sequence, The metal patch (9, 11, 14) of each microstrip antenna (1, 2, 3) is surrounded by the insu...
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