Low-frequency radiation unit and double-frequency antenna

Abstract

The invention discloses a low-frequency radiation unit and a double-frequency antenna. The low-frequency radiation unit comprises a pedestal and two pairs of baluns arranged on the pedestal. The low-frequency radiation unit also comprises two pairs of dipoles which are respectively arranged on the two pairs of baluns, wherein an oscillator arm of any of the dipoles contains a first arm section and a second arm section. One end of the first arm section is fixed on the top of a balance arm of a corresponding balun of the dipole, and the other end of the first arm is connected with the second arm section. The inner included angle between the first arm section and the second arm section is an obtuse angle which is no greater than 135 degrees. The first arm section and a plane of the first arm section and the second arm section are both perpendicular to a plane of the balance arm of the corresponding balun of the dipole. The sum of lengths of the first arm section and the second arm section is less than 0.25 times of wavelength of center frequency of the low-frequency radiation unit, and the length of the first arm section is less than the length of the second arm section. According to the low-frequency radiation unit, side length of a square formed by the oscillator arms is equal to caliber of the low-frequency radiation unit and is less than caliber of a present low-frequency radiation unit.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a low-frequency radiation unit and a dual-frequency antenna. Background technique [0002] At present, the field of mobile communication presents a situation where the second generation 2G (second generation) mobile communication network and the third generation 3G (third Generation) mobile communication network coexist. In order to provide communication services for both 2G network users and 3G mobile communication network users, the antenna of the mobile communication base station must be compatible with 2G and 3G mobile communication networks for communication. [0003] The antennas of mobile communication base stations on the market are usually equipped with both high-frequency radiation units and low-frequency radiation units; the high-frequency radiation units often serve the 3G mobile communication network correspondingly, and the low-frequency radiation units often ser...

AI Technical Summary

Problems solved by technology

[0009] When the existing dual-band antenna is miniaturized (that is, the distance between adjacent radiating elements is reduced), such as Figure 1a As shown, the distance between the existing low-frequency radiation unit and the adjacent high-frequency radiation unit is reduced, and the setting position of the high-frequency radiation unit is likely to fall within the aperture range of the existing low-frequency radiation unit adjacent to it, that is The vibrator arm of the existing low-frequency radiation unit forms a shield to the adjacent high-frequency radiation unit, resulting in a decrease in the radiation performance of the high-frequency radiation unit, which leads to a decrease in the radiation performance of the entire dual-frequency antenna

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