Symmetric ultra-wideband omni-directional antenna
An omnidirectional antenna and ultra-wideband technology, which is applied in the direction of the antenna grounding switch structure connection, the structural form of the radiation element, etc., can solve the problems of unstable main radiation direction of the E plane, insufficient broadband index of the ultra-wideband omnidirectional antenna, etc., and achieve improved radiation Unstable pattern, good anti-vibration performance, uniform force effect
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specific Embodiment approach 1
[0008] Specific implementation mode 1: Combination Figure 1-Figure 5 To describe this embodiment, a symmetrical ultra-wideband omnidirectional antenna of this embodiment includes a first radiating unit 1, a second radiating unit 2 and a feed coaxial line 3. The first radiating unit 1 includes a plurality of first metal plates 4 , Each first metal disc 4 includes a first quarter disc 4-1 and a first arc 4-2, the radius of the first arc 4-2 is smaller than the first quarter disc 4 The radius of 1, the first quarter disc 4-1 and the first arc 4-2 are connected up and down into one body and are located in the same plane. The first quarter disc 4-1 is at a distance from the end of the arc The position at a distance from the end is connected to the first end of the first arc 4-2 on the same side, and the vertical diameter of the first quarter disc 4-1 is the same as that of the first arc 4-2. The diameters are on the same axis, and the plurality of first metal disks 4 are evenly ar...
specific Embodiment approach 2
[0010] Specific implementation manner two: combination figure 1 with image 3 To illustrate this embodiment, the number of the first metal disk 4 and the number of the second metal disk 5 in this embodiment are both 6 or 8. With this configuration, the increase in the number of metal disks can improve the out-of-roundness of the antenna H-plane pattern, but too many metal disks will cause the antenna to be processed complex and the weight is too large. Therefore, the optimal number is 6 or 8. One. The other composition and connection relationship are the same as in the first embodiment.
specific Embodiment approach 3
[0011] Specific implementation mode three: combination figure 2 with image 3 To describe this embodiment, the feeding distance between the bottom of the first radiating unit 1 and the top of the second radiating unit 2 in this embodiment is 0.6 mm-1 mm. Such a setting can ensure that the antenna maintains a good impedance matching in the full working frequency band. The other composition and connection relationship are the same as in the first embodiment.
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