Method for achieving reflector antenna beam two-dimensional scanning
An antenna beam, two-dimensional scanning technology, applied to antennas, electrical components, etc., can solve the problems of unable to achieve continuous beam scanning, complex feeding system, low efficiency of the antenna mouth, etc., to achieve high beam design flexibility, feeding The effect of simple system connection relationship and high antenna port efficiency
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[0031] Embodiment: According to the above idea, a reflector antenna for hybrid two-dimensional scanning is designed. The physical aperture of the reflector is a circular aperture antenna with a diameter of 26m. The antenna feed array has a total of 143 feed sources, and the scanning range is two-dimensional ± 2°. The schematic diagram of the feed array used is shown in image 3 shown. It should be noted that the layout of the feed array is not limited to image 3 The rectangles shown are regularly arranged.
[0032] In order to maximize the output efficiency of the amplifier, the amplifiers of each feed channel in the following design work in a saturated state, and the amplitude of each feed source is equal when it works, and the beam change is only realized by the change of the feed source and the weighting of the phase.
[0033] Figure 4 The reference beam, that is, the feed used when the beam points to (0°,0°), is given; Figure 5 The feed used when the beam is pointed...
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