Double-feed broadband high-gain antenna applied to base station communication system

Abstract

The invention discloses a double-feed broadband high-gain antenna applied to a base station communication system. The double-feed broadband high-gain antenna comprises a metal baseplate and symmetrical double-ring metal radiation patches which are connected on the metal baseplate through a pair of metal shorting columns and two pairs of shorting walls. The symmetrical double-ring metal radiation patches have an H-shaped structure. A pair of feed baluns have a hook structure and are arranged at the two sides of the symmetrical double-ring metal radiation patches. A pair of the shorting walls are arranged at the two sides of the feed baluns to form a magnetoelectric coupling feed structure with the feed baluns. A pair of the shorting columns are arranged at the two sides of a pair of the shorting walls and symmetrically connected on the parallel plates of the two sides of the H-slice intermediate rib plate of the symmetrical double-ring metal radiation patches. A pair of SMA connectors are arranged at the two sides of the symmetrical double-ring metal radiation patches and positioned exactly below the feed baluns. The impedance matching characteristic in the working band can be improved, and the working band can be expanded so that the broadband characteristic of the antenna can be realized, the gain of the antenna can be enhanced, the broadband wireless communication system can be realized and the antenna complexity of the communication system can be reduced.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to an antenna design method with wide frequency band, low cross polarization and high gain, which can be applied to base station antenna design. Background technique [0002] With the development of wireless communication systems, the performance requirements of the system are getting higher and higher. Antenna is an important transceiver device of the system terminal, and the improvement of its performance has also attracted more and more attention of electronic engineers. At present, antennas with simple structure, miniaturization, low cost, wide frequency band, low cross-polarization, and high gain have also become research hotspots. These advantages of the antenna make the wireless communication system have the characteristics of strong anti-interference, high transmission power and high system sensitivity. At present, the antennas used in modern wireless comm...

AI Technical Summary

Problems solved by technology

At present, the antennas used in modern wireless communication systems still have the following problems: 1. The bandwidth is narrow, and there are situations where multiple antennas with different operating frequencies are used to work together; 2. The cross polarization is poor, which seriously affects the anti-interference performance of the antenna; 3. , The gain is low. In order to obtain a higher gain, the antenna needs to be arrayed, but the array increases the size and cost of the antenna.

Images