Collinear antenna array composed of novel monopole antennas and composite antenna array
A monopole antenna and collinear antenna array technology, applied in the field of electronics, achieves high gain, avoids the deterioration of antenna directional characteristics, and improves the effect of antenna gain
Inactive Publication Date: 2020-05-26
成都赐华科技有限公司
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Problems solved by technology
However, due to the mutual coupling between the existing monopole antennas, the distance between the monopole antenna elements in the array antenna is usually greater than or equal to one-half wavelength
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[0018] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] figure 1 It is a structural diagram of a collinear antenna array composed of a new type of monopole antenna. The monopole antenna 1 in an open rectangular cavity is used as an array element (unit antenna), and the number of array elements is N (N≥2). Each array element is arranged on a straight line (Y-axis direction) at equal intervals to form a linear array. The height of the monopole antenna 1 in the open rectangular cavity is about 0.44λ, and the polarization direction is consistent with the axis of the antenna array. Since the radiation direction is perpendicular to the axis of the antenna array, the collinear...
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The invention provides a collinear antenna array composed of novel monopole antennas and a composite antenna array. Array elements of the collinear antenna array are monopole antennas an open rectangular cavities, the polarization direction of each monopole antenna in the open rectangular cavity is consistent with the axis direction of the antenna array, and the collinear binary antenna array canserve as a unit antenna to form various antenna arrays, namely, composite antenna arrays. The novel monopole antenna comprises an open rectangular cavity and a monopole antenna, wherein the open rectangular cavity is composed of a section of a rectangular waveguide and a metal plate, and the monopole antenna is fixedly mounted in the rectangular waveguide cavity. The monopole antennas in the novelopen rectangular cavities are adopted to form a dense collinear antenna array, so that the antenna gain is remarkably improved under the condition of the same volume, and the problem that the antennadirectivity becomes poor due to mutual coupling of antenna units is avoided at the same time; and the collinear binary antenna array provides a high-gain antenna unit, a feed system of the compositeantenna array is simplified, and power loss caused by the feed system is reduced.
Description
technical field [0001] The invention belongs to the field of electronic technology, and relates to high-gain antennas, array antennas and the like formed by monopole antennas in open rectangular cavities. Background technique [0002] Dipole antennas, especially half-wave dipole antennas, are a type of antennas that are widely used, especially as element antennas in array antennas. The monopole antenna (quarter wavelength) is evolved from the dipole antenna. Its size is half smaller than that of the half-wave dipole antenna, and its directivity coefficient is 3dB higher than that of the half-wave dipole antenna. The "ground" surface induced current in the monopole antenna plays a role of radiation, which improves the directivity coefficient of the antenna on the one hand, and shields the influence of the outside world on the monopole antenna on the other hand. [0003] In order to improve the antenna gain, the element antennas are often formed into an array antenna, and the...
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IPC IPC(8): H01Q21/08H01Q9/42H01Q9/06
CPCH01Q9/06H01Q9/42H01Q21/08
Inventor 阮成礼江平
Owner 成都赐华科技有限公司