Method for improving working performance of antipodal Vivaldi antenna
A working performance and antenna technology, applied in the fields of electromagnetic fields and microwaves, can solve problems such as waveform smearing, limited antenna operating frequency band, reflected voltage damage, etc., and achieve the goal of eliminating smearing, avoiding ultra-wideband pulse source damage, and optimizing design Effect
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Embodiment 1
[0049] Such as figure 2 Shown is adopting method provided by the present invention to such as figure 1 An embodiment of a conventional plantar Vivaldi antenna structurally modified and resistively loaded is shown.
[0050] will be like figure 1 The inner exponential gradient line structures 11, 21 of the upper and lower metal radiation patches 1, 2 of the conventional antipodal Vivaldi antenna shown are constructed as figure 2 The upper surface current conducting structure 12 and the lower surface current conducting structure 22 are shown.
[0051] Such as figure 2 , 3 As shown, the current conduction structure 12 on the upper surface is composed of three planar branches, the outlines of the three planar branches are all elliptic curves, and the starting end is figure 1 The inner exponential gradient line structure 11 of the metal radiation patch 1 on the middle and upper surface gradually narrows in width from the starting end to the end, and the width of the ends of ...
Embodiment 2
[0062] Such as Figure 5 Shown is adopting method provided by the present invention to such as figure 1 An embodiment of a conventional plantar Vivaldi antenna structurally modified and resistively loaded is shown.
[0063] will be like figure 1 The inner exponential gradient line structures 11, 21 of the upper and lower surface metal radiation patches 1, 2 of the conventional antipodal Vivaldi antenna shown are constructed as follows Figure 5 The upper surface current conducting structure 12 and the lower surface current conducting structure 22 are shown.
[0064] Such as Figure 5 As shown, the upper surface current conduction structure 12 is a planar branch, the upper contour line is an exponential gradient line, the lower contour line is an elliptic curve, and the width of the branch gradually narrows from the beginning to the end. Such as Figure 5 As shown, the upper structure of the feed structure microstrip line ground plate is simply transformed into an upper cu...
Embodiment 3
[0068] Such as Figure 7 Shown is adopting method provided by the present invention to such as figure 1 An embodiment of a conventional plantar Vivaldi antenna structurally modified and resistively loaded is shown.
[0069] Such as figure 1 , 7 As shown, an elliptic curve is used to replace the inner exponential gradient line structure 11 of the metal radiation patch 1 on the upper surface of the conventional antipodal Vivaldi antenna to construct the upper surface current conducting structure 12 and the upper side current grounding structure 53 . Similarly, the inner exponential gradient line 12 of the metal radiation patch 2 on the lower surface of the conventional antipodal Vivaldi antenna is constructed as the lower surface current conducting structure 22 and the lower side current grounding structure 54 by using the same elliptic curve. Such as Figure 7 As shown, the positions of the upper surface current conducting structure 12 and the upper side current grounding s...
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