Source stirring method of electrical modulation electromagnetic wave orbit angular momentum mode for reducing reverberation room measurement uncertainty
A technology for measuring uncertainty and orbital angular momentum, which is applied in the direction of measuring electrical variables, measuring devices, and electromagnetic field characteristics, can solve the problems of limited application range, time-consuming stirring method, and inability to obtain original data, etc., to reduce measurement uncertainty , Shorten the test time, and the effect of simple mode switching
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[0023] The present invention will be described in further detail below in conjunction with the examples.
[0024] The electrically adjustable vortex electromagnetic metasurface adopted in the present invention is as figure 1 As shown in (1), the electromagnetic metasurface is composed of 9×9 metasurface units closely arranged periodically, and each metasurface unit is loaded with two varactor diodes, such as figure 1 As shown in (2), the size of the electromagnetic metasurface is 30cm×30cm×1.2cm. By adjusting the bias value (0-30V DC) of the varactor diode through an external circuit, the phase characteristics of the electromagnetic wave can be adjusted, and then the mode of the orbital angular momentum of the electromagnetic wave can be controlled.
[0025] The overall test environment of the embodiment of the present invention is as figure 2 As shown, the size of the reverberation chamber is 1.50m × 1.44m × 0.92m, in which two mechanical stirrers (one horizontal and one v...
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