Low-frequency radiation unit and antenna

Abstract

The invention relates to the technical field of communication, and discloses a low-frequency radiation unit and an antenna. The low-frequency radiation unit comprises a bottom plate, a supporting plate with one end disposed on the bottom plate, and a radiation plate disposed at the other end of the supporting plate. The radiation plate comprises two oscillator arms which are crossed up and down and are perpendicular to each other, each oscillator arm comprises a first radiation arm and a second radiation arm, the first radiation arm is provided with a plurality of spiral groove structures, and the second radiation arm and the first radiation arm are in rotational symmetry. According to the low-frequency radiation unit and the antenna provided by the invention, the spiral groove structures are additionally arranged on the oscillator arms to form the band-stop filter circuit so that the low-frequency radiation unit has a high-frequency filtering function, the problem of mutual coupling between the high-frequency radiation unit and the low-frequency radiation unit in an antenna array is effectively solved, and the interference of the low-frequency radiation unit on the high-frequency radiation unit is reduced; and the multi-frequency and integrated design of the antenna is facilitated.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a low-frequency radiation unit and an antenna. Background technique [0002] With the development of mobile communication technology, base station antennas shared by multiple systems have gradually become mainstream products. Such antennas generally include GSM900 communication system radiating units, which work in the 880-960MHz frequency band, and also include DCS1800 communication system radiating units, which work in the 1710-1880MHz frequency band, and may also include WCDMA communication system radiating units, which work in the 1920-2170MHz frequency band. band work. Generally, the three communication systems work simultaneously. Since the higher frequency band is a multiple of the frequency of the lower frequency band, there is a possibility that the frequency of the higher frequency band will resonate on the components of the low frequency band radiating unit, an...

AI Technical Summary

Problems solved by technology

Since the higher frequency band is a multiple of the frequency of the lower frequency band, there is a possibility that the frequency of the higher frequency band will resonate on the components of the low frequency band radiating unit, and this interaction makes the low frequency band radiating unit perform high frequency signals Scattering, resulting in deformation of the radiation pattern in the high frequency band, larger fluctuations in beam width, and poorer signal coverage of base station antennas

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