Dual-polarized microstrip slot antenna for LTE frequency band

Abstract

The invention discloses a dual-polarized microstrip slot antenna for an LTE frequency band. The antenna comprises a metal reflection plate, a first PCB dielectric substrate and a second PCB dielectric substrate, wherein the top surface and the bottom surface of the first PCB dielectric substrate and the top surface of the second PCB dielectric substrate are all coated with copper layers; the copper layer on the top surface of the first PCB dielectric substrate is at least provided with two groups of mutually orthogonal coupling slots used for radiating electromagnetic waves; the copper layer on the bottom surface of the first PCB dielectric substrate is at least provided with two groups of mutually orthogonal feed circuits used for exciting mutually orthogonal electric fields; and the copper layer on the top surface of the second PCB dielectric substrate is provided with a metal radiation patch used for coupling the electromagnetic waves from the coupling slots and generating parasitic radiation. By implementing the dual-polarized microstrip slot antenna for the LTE frequency band, a radiation unit and the feed circuits are integrated, so that the antenna is small in volume, low in profile, high in isolation degree and easy to integrate, and can cover the whole LTE frequency band.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a dual-polarized microstrip slot antenna used in the LTE frequency band. Background technique [0002] With the rapid development of modern communication technology and the popularization of smart devices, people rely more and more on wireless network resources. Modern people's life has been closely linked with smart devices and wireless networks. Therefore, the trend of seizing wireless network resources among operators has intensified. [0003] At present, in the 4G era, macro base stations have been difficult to meet users' needs for large data throughput. For this reason, operators mostly meet users' needs by encrypting base stations, which also makes cells smaller and smaller. It has brought some problems: for example: people's environmental awareness is getting stronger and stronger, and the fear of electromagnetic radiation is also unprecedented, making it ...

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Problems solved by technology

[0003] At present, in the 4G era, macro base stations have been difficult to meet users' needs for large data throughput. For this reason, operators mostly meet users' needs by encrypting base stations, which also makes cells smaller and smaller. It has brought some problems: for example: people's environmental awareness is getting stronger and stronger, and the fear of electromagnetic radiation is also unprecedented, making it extremely difficult for operators to build stations; another example: high-density macro base stations will inevitably bring operators costs Increase

[0004] In the existing technology, the better solution for serving the integrated micro base station is not perfect, and there are problems such as large volume, difficult integration, and limited working bandwidth caused by the unreasonable structural design of the microstrip slot antenna.

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