Millimeter-wave low-profile broadband antenna

Abstract

The invention discloses a millimeter-wave low-profile broadband antenna, comprising the following three-layer structures arranged in order from top to bottom: a first layer structure comprising a metal patch structure and two metal strip resonators, the metal patch structure being positioned between the two metal strip resonators; and a second layer structure comprising a metal strip resonator anda metal strip resonator. The second layer is a large metal formation with a pair of circular cracks; A third layer structure including a feeding structure connected to the two metal strip resonatorsthrough a pair of metal vias through which the pair of circular slots are pierced. The invention solves the problem that the traditional design technology requires high profile height, and realizes the wideband coverage performance of the antenna on the basis of low profile. Moreover, the metal patch structure and the two metal strip resonators are arranged in the same layer, and the single layerstructure is adopted, that is, only one layer of dielectric substrate is needed above the metal ground of the antenna, which effectively reduces the design and processing cost, realizes a wide spectrum bandwidth in a low-cost manner, and has good radiation performance in the frequency band.

Description

Technical field [0001] The present invention relates to the field of communication, in particular to a millimeter wave low-profile broadband antenna. Background technique [0002] The fifth-generation mobile communication technology is developing rapidly in the direction of high frequency, miniaturization, low cost and high performance. By taking advantage of the bandwidth advantages of millimeter wave frequency bands (for example, 28GHz, 39GHz, and 60GHz), the data transmission rate can be increased by tens of times compared with the fourth generation (from 100Mb / s to tens of Gb / s). At the same time, due to the high consumption orientation of various terminal devices, they are pursuing lightness and thinness, and in the fierce competition environment, they must give full consideration to cost and performance. In this context, a low-profile broadband antenna is designed in a low-cost manner. For example, in the 28GHz frequency band, the profile height is 0.06λ 0 And below (under...

AI Technical Summary

Problems solved by technology

For example, magnetoelectric dipoles can be applied to the design of millimeter-wave broadband antennas, and there are also broadband microstrip patch technologies that use slot feeding combined with parasitic elements, but these two antennas are extremely sensitive to the height of the profile. Difficulty maintaining its broadband characteristics

At the same time, there are also E-type microstrip patches and capacitively coupled microstrip double patch technologies that introduce inductive branches at the feed end. This type of low-profile antenna design either requires a multi-layer structure, which is not conducive to low-cost implementation, or difficult At a profile height of 0.06λ 0 And below, to achieve more than 15% bandwidth coverage

[0004] In short, with existing design techniques, either there is difficulty 0 To achieve wide-band work, the relative bandwidth is greater than 15%, or a multi-layer circuit structure is required, the design and processing costs are high, and it is difficult to carry out market promotion

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