Low-profile two-dimensional beam scanning array antenna
A beam scanning and array antenna technology, applied in the field of array antennas, can solve the problems of system cost, weight increase, complex feeding network design, and limitation of large-scale application, etc., to eliminate major obstacles, improve side lobe level, and phase uniformity. Sexual improvement effect
Pending Publication Date: 2022-02-11
胡南
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Problems solved by technology
Electronically scanned phased array antenna can better overcome the above shortcomings. It not only has fast scanning speed and more flexible performance, but also has a planar or conformal structure that is more conducive to maintaining conformality with the carrier. However, the design of its feed network is complicated, especially when the antenna When the aperture increases, the feed loss is higher, the radiation efficiency of the antenna is lower, and the achievable gain is limited
Although the introduction of solid-state transceiver components in the unit can reduce the feed loss, the cost and weight of the system will be greatly increased, which limits its large-scale application
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[0020] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0022] Such as figure ...
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The invention discloses a low-profile two-dimensional beam scanning array antenna, which relates to the technical field of array antennas. The array antenna comprises a resonator antenna ERA body located on the lower side, the antenna body comprises a partial reflection surface PRS, a bottom layer all-metal phase correction structure is fixed to the upper side of the partial reflection surface PRS, a middle layer all-metal phase correction structure is fixed to the upper side of the bottom layer all-metal phase correction structure, a top layer all-metal phase correction structure is fixed on the upper side of the middle layer all-metal phase correction structure, the distance between the bottom layer all-metal phase correction structure and the PRS is lambda0 / 4, and the distance between the all-metal phase correction structures is lambda0 / 3. The array has the advantages of being simple in antenna structure, low in cost, large in power capacity and the like, and the phase uniformity of the antenna is remarkably improved.
Description
technical field [0001] The invention relates to the technical field of array antennas, in particular to a low-profile two-dimensional beam scanning array antenna. Background technique [0002] Array antennas with beam scanning characteristics have a wide range of applications in various fields. The existing high-gain beam scanning antennas mainly include mechanical rotating parabolic antennas and electronically controlled phased array antennas. Among them, the rotating parabolic antenna has the advantages of simple structure, low cost, and high efficiency, but its shape is a special curved surface, bulky, heavy, and the beam scanning speed is slow, and the servo system requires high requirements. Electronically scanned phased array antenna can better overcome the above shortcomings. It not only has fast scanning speed and more flexible performance, but also has a planar or conformal structure that is more conducive to maintaining conformality with the carrier. However, the ...
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IPC IPC(8): H01Q21/00H01Q3/36H01Q1/38
CPCH01Q21/00H01Q3/36H01Q1/38
Inventor 胡南
Owner 胡南