Octagonal flat-type array antenna
An array antenna and flat-panel technology, applied in antennas, antenna arrays, antenna grounding devices, etc., can solve the problem of stability and anti-multipath ability affecting measurement accuracy, affecting receiver system measurement accuracy and application range, using frequency band, phase Center stability, anti-multipath ability, balance of circular polarization gain and good wide-angle circular polarization characteristics are difficult to fully satisfy, so as to achieve the effect of stable radiation phase center, light structure and good anti-multipath performance
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[0031] It mainly includes the following five parts:
[0032] Central radiating unit assembly, two sets of radial parasitic coupling plates arranged symmetrically and equally spaced, grounding plate and grounding plate cavity, circularly polarized four-point feeding network, radome.
[0033] The antenna is installed on a ground plate cavity with a diameter of no more than 200mm, and the central radiating unit assembly is 30mm high, which is the main body of the antenna radiation.
[0034] The grounding plate cavity is a circular cavity with an outer flange, and the entire feed network is enclosed and installed in the grounding plate cavity. Two sets of parasitic coupling plates are evenly distributed on the ground plate cavity. One group is arranged on the outer periphery of the central radiating unit assembly and consists of 12 coupling plates arranged at equal intervals along the radial direction; the other group is arranged under the top plate of the central ...
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