Parasitic metal pillar feeding microstrip antenna applications

One application of parasitic metal pillar feeding microstrip antenna, comprising four dielectric plate, the radiation patch, metal floor, the SMP RF connector, in the form of a stripline divided into two power splitter, a first metal pillar feeding, the first two feeding metal pillars, a first parasitic feeding metal pillar, a second metal pillar parasitic feeding the like. On the basis of the dual feed point antenna circularly polarized microstrip antenna adds parasitic feeding metal posts, such that the coupling induced by electromagnetic stray metal pillar feeding electromagnetic energy having a certain amplitude and phase, thereby changing the surface current distribution of the microstrip antenna the electromagnetic field distribution between the microstrip antenna and the floor in order to get close to the "four feed point" microstrip antenna radiation pattern rotationally symmetrical, while improving the low elevation gain, feed network is simplified, reducing the feeder loss, reducing the size of the envelope. Particularly suitable for miniaturization, pattern rotation symmetry requirement, low elevation gain requirements are higher occasions, with application value.