Broadband filtering oscillator and antenna system

Abstract

The invention provides a broadband filtering oscillator and an antenna system, and relates to the technical field of mobile communication. The broadband filtering oscillator comprises a radiation sheet, a feed unit and a bottom plate. The radiation sheet is electrically connected with one end of the feed unit; the bottom plate is electrically connected with the other end of the feed unit; the radiation sheet comprises a dielectric plate and at least one metal radiation arm arranged on the dielectric plate; the metal radiation arm is provided with a filtering branch, and the broadband space filtering performance of the broadband filtering oscillator is optimized by adjusting the position and size parameters of the filtering branch. According to the broadband filtering oscillator and the antenna system provided by the invention, the broadband space filtering performance of the broadband filtering oscillator is optimized by adjusting the combination form and the structural size parameters of the filtering branch, so that broadband space decoupling between high and low frequency radiation units in a multi-frequency miniaturized dense array base station antenna can be effectively realized, the low-frequency oscillator possibly has little influence on a high-frequency directional diagram, and the miniaturization and multi-frequency characteristics of the antenna system are improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a broadband filter vibrator and an antenna system. Background technique [0002] In recent years, with the rapid development of mobile communication technology, mobile communication systems have higher and higher requirements for base station antennas, requiring base station antennas to be small enough to support more frequencies. In order to realize the miniaturization and multi-frequency characteristics of the base station antenna, the research on the problem of pattern distortion caused by the spatial mutual coupling between the high and low frequency radiating elements in the dense antenna array has become a hot spot pursued by major base station antenna manufacturers. . [0003] In the multi-frequency dense array base station antenna, the high-frequency radiation unit and the radiation unit are densely arrayed, which often causes the high-frequency oscillator t...

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Problems solved by technology

[0003] In the multi-frequency dense array base station antenna, the high-frequency radiation unit and the radiation unit are densely arrayed, which often causes the high-frequency oscillator to enter the space below the low-frequency oscillator, so that the electromagnetic wave signal radiated by the high-frequency oscillator will be received by the radiation arm of the low-frequency oscillator. Re-scattering, resulting in severe distortion of the high-frequency oscillator pattern, affecting the quality of communication

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