Fan-shaped ultra wideband dual polarization antenna radiation unit

Abstract

The invention discloses a fan-shaped ultra wideband dual polarization antenna radiation unit, which comprises a reflecting plate, a radiator, feed chips, a balun support, a base and a cable welding seat. The radiator comprises four vibrator arms with the same shape, the opposite two vibrator arms form a group, the lower part of the vibrator arm is connected with the balun support, the base is positioned at the bottom of the balun support and connected with the balun support at the same time, and the base is fixed on the reflecting plate; and the cable welding seat passes through the reflecting plate, a cable outer conductor is welded with the cable welding seat, a cable inner conductor is welded with the lower end of the feed chip, the number of the feed chips is two, the feed chips form a cross structure, and the upper end of the cross structure and the radiator form a feed structure. The fan-shaped ultra wideband dual polarization antenna radiation unit can efficiently broaden the working bandwidth, improve the radiation efficiency, improve the isolation degree, reduce cross modulation signals and the like, reduces the components of the radiation unit, simplifies the assembly flow, realizes low-cost design, and is suitable for mass production.

Description

technical field [0001] The invention relates to a communication antenna radiation unit, in particular to an ultra-wideband dual-polarization antenna radiation unit, which belongs to the field of mobile communication. Background technique [0002] With the updating of science and technology and the full issuance of 3G licenses, mobile communication has entered people's lives and plays an important role. Due to the rapid increase in the number of users, the working frequency bands of various mobile communication systems are constantly expanding. At present, the third-generation mobile communication is gradually occupying the market. This situation makes the base station have higher and higher requirements for the frequency bandwidth of the antenna. We know that the base station antenna is generally composed of the same type of radiating units into an array form. At present, the radiating unit of the base station antenna has two forms, one is an air microstrip, and the other is...

AI Technical Summary

Problems solved by technology

We know that the base station antenna is generally composed of the same type of radiating units into an array form. At present, the radiating unit of the base station antenna has two forms, one is an air microstrip, and the other is a half-wave oscillator. Among them, the air microstrip antenna frequency band Too narrow, although one or more layers of parasitic patch technology can be used to widen the bandwidth of the microstrip antenna, but the frequency band is still not wide enough, and the antenna structure is more complicated, and the frequency band of the half-wave oscillator radiation unit is wider but still limited. Moreover, because it is made of a single piece of metal folded and integrated, the welding range between it and the antenna base plate is relatively large and requires more fasteners to fix the connection. The process is complicated, which restricts mass production.

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