HIGH PILOT-FREQUENCY ISOLATION BROADBAND DUAL-BAND BASE STATION ANTENNA ARRAY

摘要

Disclosed is a high pilot-frequency isolation broadband dual-band base station antenna array, comprising at least one high-frequency antenna unit, a low-frequency antenna unit and a floor. When there is one high-frequency antenna unit, same is arranged at one side of the floor, and when there are a plurality of high-frequency antenna units, same are respectively arranged at two sides of the floor, comprising a plurality of oscillator arms and a balun, wherein the oscillator arms are connected therebetween by means of a distributed inductor and are used for feeding by means of the balun; and the low-frequency antenna unit is arranged in the middle of the floor, comprising a plurality of oscillator arms and a balun, wherein the oscillator arms are connected therebetween by means of a distributed capacitor and are used for feeding by means of the balun, and the balun is provided with a feed line and an H-type micro-strip line branch, wherein the H-type micro-strip line branch is connected to the feed line. The present invention, in the case where no filter is cascaded, realizes the high degree of isolation thereof under circumstances where the distance of a pilot-frequency antenna unit and the size of a floor are relatively small, and avoids the insertion-loss of the filter. At the same time, the purpose of stabilizing a directional diagram within a wideband is realized, and a decoupling structure does not additionally increase the volume of an antenna unit.