Calibration method for amplitude and phase variable array antenna
An array antenna and phase technology, which is applied in the field of aerospace measurement and control, can solve problems such as long time consumption and complex data processing process, and achieve the effect of simple operation process and simple solution.
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[0033] Such as figure 1 Shown is a structural diagram of an array antenna with variable amplitude and phase. In the figure, 3 is the antenna unit, 1 is the attenuator, and 2 is the phase shifter. By changing the state of the attenuator and the phase shifter, the amplitude and phase of the signal fed to each antenna unit can be changed. This work is controlled by the controller 5 To be done.
[0034] 4 is the power source. When the array antenna is in the transmitting mode, the power source feeds each antenna unit through the corresponding attenuator and phase shifter to transmit the array signal. The power source includes a power divider to divide a signal into multiple paths and feed it to each antenna unit. By setting the phase and amplitude of the signal of each antenna unit by the controller, a beam of the required specific shape can be formed and beam scanning can be realized. At this time, the auxiliary antenna 7 can be set in the far field range of the array antenna. When the
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