Multiband antenna

Abstract

The invention discloses a multiband antenna, and is mainly applied to the field of wireless communication. The multiband antenna comprises at least one radiation unit array group. Each radiation unit array group comprises at least one first type of radiation unit array and at least one adjacent second type of radiation unit array. At least an F1 frequency band and an F2 frequency band can be abstracted from each radiation unit of the first type of radiation unit arrays. At least the F1 frequency band and the F2 frequency band can be abstracted from a part of radiation units of the second type of radiation unit arrays. In each radiation unit array group, the F1 frequency band port of each radiation unit of the first type of radiation unit arrays and the F1 frequency band port of a part of radiation units of the second type of radiation unit arrays are connected through a feed network, and the feed network is connected with the F1 frequency band output port of the radiation unit array group. The multiband antenna has advantages of simple layout and great isolation on the basis of reaching the standard of horizontal wave width of the output frequency band.

Description

technical field [0001] The invention relates to a multi-frequency antenna, which is mainly used in the field of wireless communication. Background technique [0002] With the continuous development of the wireless communication industry, the application of multi-frequency antennas is becoming more and more extensive; and the horizontal wave width of the frequency is one of the important factors affecting the multi-frequency antenna. Generally, the larger the horizontal wave width, the larger the coverage area of ​​the fan-shaped junction. The larger the antenna, the larger the propagation range, but once the tilt angle of the antenna is increased, beam distortion will easily occur, resulting in over-area coverage; and the smaller the horizontal wave width, the worse the coverage area at the sector junction. When the inclination angle of the antenna is adjusted, the coverage at the junction of the sectors can be improved in the degree of movement, and relatively speaking, it ...

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Problems solved by technology

However, this method not only complicates the antenna layout, but the added radiator may also make the antenna unrealizable, and the isolation is poor

In addition, when the distance between two rows of radiators is very close, the horizontal wave width of each row of radiators diverges, and the low frequency F1 is too wide, for example, when the distance between two rows is 0.3-0.7 wavelengths, the low frequency wave width It may reach 75-110 degrees, which cannot meet the wave width requirements of communication antennas (usually the typical horizontal plane wave width requires 65 degrees)

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