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3rd Section is the research on Algorithms for Estimating Phase and Alignment of Phased Array Antennas.
That is, the REV method can identify the phase deviations of antennas using only amplitude/power (real-number) measurement techniques.
Then, the REV technology incorporates real-world environmental factors into the calibration process. The factors include the changes in the T/R module, variations in the feed circuit, and diffraction effects caused by the antenna structure.
Next, the REV technology evolution is shown as follows. First, the conventional REV uses the amplitude technique. The generalized REV uses the higher-order Fourier series. Next, the fast REV uses the joint algorithms. Now, the large array of REV is studied by self-calibration, fast, and low-cost issues.
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IEEE/ICACT20240441 Slide.08
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