Broadband dual polarized antenna based on single-chip double-sided printed-circuit board

Abstract

A broadband dual polarized antenna based on a single-chip double-sided printed-circuit board comprises a dielectric substrate, an earth plate, a monopole feeder line and a buckling feeder line, wherein the earth plate is located on the reverse side of the dielectric substrate, and the monopole feeder line and the buckling feeder line are located on the front side of the dielectric substrate. A circular groove with a thorough crevice is formed in the center of the earth plate, the projection of the monopole feeder line on the earth plate extends from the edge of the circular groove to the inside of the circuit groove, the projection of one side of the buckling feeder line on the earth plate crosses with the crevice perpendicularly, and the side is provided with a buckling structure on the crevice. According to the broadband dual polarized antenna based on the single-chip double-sided printed-circuit board, two cross polarizations are formed through two degenerated TE modes of a circular groove antenna, one polarization is generated theough microstrip line stimulation of a similar monopole, the other polarization is generated through the following steps: firstly, a narrow rectangular crevice forms an electric field on the circular groove antenna through microstrip line stimulation, and then the electric field is coupled on the circular groove antenna. The broadband dual polarized antenna based on the single-chip double-sided printed-circuit board can cover a broader frequency band, and high isolation exists between the two polarizations in all working bands. Further, the polarizations is simple in structure, low in cost, capable of being formed in one time, and good in craft uniformity.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a broadband dual-polarization antenna based on a single-chip double-sided printed circuit board. Background technique [0002] The field of modern mobile communication is experiencing unprecedented rapid development, and new technical standards are constantly being proposed, such as GSM for the second generation of mobile communication, UMTS for the third generation of mobile communication, WLAN / WiMax standard for wireless local area network, and the fourth generation The LET standard, etc., the subsequent change is that the frequency band required by mobile communication is getting wider and wider. On the other hand, in order to combat signal multipath fading and improve channel transmission capacity, mobile communication base stations generally use dual-polarized antennas, and use the polarization characteristics of the antennas to achieve antenna diversity or MIMO characteris...

AI Technical Summary

Problems solved by technology

However, most of these antennas cannot cover the recently proposed communication frequency bands, such as LTE2500

The common problem of the antenna based on the microstrip form is that the structure is relatively complex and inconvenient to assemble, and another problem brought about by the complex structure is the increase in the cost of antenna production.

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