Circularly Polarized Dual-Band Antenna
A dual-band antenna and circular polarization technology, applied in antennas, resonant antennas, antenna arrays, etc., can solve the problems of wide beam width, circular polarization design difficulties, and difficulties, and achieve the best omnidirectional effect
Inactive Publication Date: 2021-03-02
SZ DJI TECH CO LTD
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Problems solved by technology
However, it is difficult for existing circularly polarized antennas to achieve a wider beam width, and when the antenna attitude changes, the performance of the circularly polarized antenna will be significantly deteriorated
Moreover, it is difficult to achieve circular polarization design at both frequencies. In addition, it is more difficult to design circular polarization with one frequency left-handed and the other frequency right-handed.
Method used
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Embodiment Construction
[0062] In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of example different exemplary structures, systems and structures in which aspects of the invention may be implemented and steps. It is to be understood that other specific arrangements of components, structures, exemplary means, systems and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "end," "between," etc. may be used in this specification to describe various exemplary features and elements of the invention, these terms are used herein for convenience only, for example in light of the Example orientation. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of structures in order to fall within the scope of this inv...
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The embodiment of the present invention discloses a circularly polarized dual-frequency antenna, which includes a feed network and a plurality of dipoles, the plurality of dipoles are arranged on a cylindrical surface, and the dipole includes a first dipole unit and a second dipole unit, Both the first vibrator unit and the second vibrator unit include a first vibrator and a second vibrator, the first vibrator includes a first vertical portion and a first transverse portion, and the second vibrator includes a second vertical portion and a second transverse portion; A vertical portion and a second vertical portion are parallel to the central axis of the cylindrical surface; the feed network is respectively connected to each first oscillator unit and each second oscillator unit. In the embodiment of the present invention, by arranging multiple dipoles on the cylindrical surface, the antenna has better circular polarization performance. At the same time, the oscillator unit includes the design of the first oscillator and the second oscillator, so that the antenna has the ability to work at two frequencies.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of antennas, in particular to a circularly polarized dual-frequency antenna. Background technique [0002] For antennas, the anti-interference ability of circularly polarized antennas is usually better than that of linearly polarized antennas. However, it is difficult for existing circularly polarized antennas to achieve a wider beam width, and when the antenna attitude changes, the performance of the circularly polarized antenna will obviously deteriorate. Moreover, it is difficult to achieve circular polarization design at both frequencies. In addition, it is more difficult to design circular polarization with one frequency left-handed and the other frequency right-handed. Contents of the invention [0003] The technical problem to be solved by the invention is how to improve the circular polarization performance of the antenna and how to improve the radiation characteristics of th...
Claims
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IPC IPC(8): H01Q1/38H01Q1/50H01Q9/28H01Q21/20H01Q21/00
CPCH01Q1/38H01Q1/50H01Q9/28H01Q21/0075H01Q21/205
Inventor 李栋
Owner SZ DJI TECH CO LTD