阅读说明：本技术 小型化宽频带单极子全向天线 (Miniaturized broadband monopole omnidirectional antenna ) 是由 于宏健 呼延江利 曹亮 温黔伟 于 2019-12-03 设计创作，主要内容包括：本发明公开了小型化宽频带单极子全向天线,包括底板、环形金属套、介质板与天线振子；所述环形金属套与介质板均与底板固定连接；所述环形金属套平行设置于介质板外侧；所述天线振子设置于介质板外侧。本发明在天线底部加装一个环形金属套,在保证的其体积小、重量轻的前提下,克服了单极子天线固有的阻抗带宽窄的缺陷,且解决了小型化单极子天线方向图变形的问题,保证了全向天线方向图的标准型,天线结构更为简单,易于加工,且便于批量生产。(The invention discloses a miniaturized broadband monopole omnidirectional antenna which comprises a bottom plate, an annular metal sleeve, a dielectric plate and an antenna oscillator, wherein the bottom plate is provided with a first end and a second end; the annular metal sleeve and the dielectric plate are fixedly connected with the bottom plate; the annular metal sleeves are arranged on the outer side of the dielectric plate in parallel; the antenna element is arranged on the outer side of the dielectric plate. The annular metal sleeve is additionally arranged at the bottom of the antenna, so that the defect of narrow impedance bandwidth inherent in the monopole antenna is overcome on the premise of ensuring small volume and light weight, the problem of deformation of a directional diagram of a miniaturized monopole antenna is solved, the standard form of the directional diagram of the omnidirectional antenna is ensured, the antenna is simpler in structure and easy to process, and batch production is facilitated.)

1. The miniaturized broadband monopole omnidirectional antenna is characterized by comprising a bottom plate, an annular metal sleeve, a dielectric plate and an antenna oscillator; the annular metal sleeve and the dielectric plate are fixedly connected with the bottom plate; the annular metal sleeves are arranged on the outer side of the dielectric plate in parallel; the antenna element is arranged on the outer side of the dielectric plate.

2. The miniaturized wideband monopole omnidirectional antenna of claim 1, wherein the antenna elements are microstrip metal patches.

Technical Field

The invention belongs to the technical field of microwave communication, and particularly relates to a miniaturized broadband monopole omnidirectional antenna.

Background

The polar antenna is the most widely applied antenna in antenna engineering technology, has application in engineering systems such as communication, broadcasting, television, radar, navigation, telemetering and the like, is widely applied to various wave bands from long wave to microwave, can be independently used as an antenna to work, can be used as an array element of the antenna, and can also be used as a partial structure of some antennas. However, the impedance bandwidth of the conventional vertical thin-wire monopole antenna is narrow, the length is high, and the volume is large. At present, various mature modes exist for widening the impedance bandwidth of the monopole, but the monopole is miniaturized and the reflection ground area needs to be reduced, so that the maximum antenna gain direction deflection angle is inevitably caused by the reduction of the reflection ground area, and a gain directional diagram becomes an nonstandard omnidirectional directional diagram.

At present, the method for obtaining a standard omnidirectional directional pattern by a monopole antenna mainly comprises: to a dipole antenna or to increase the reflective ground area. However, the size of the antenna is increased by changing the dipole antenna and increasing the area of the reflecting ground, so that the miniaturization of the antenna cannot be realized; the length of the dipole antenna is twice that of the monopole antenna, the height of the dipole antenna is doubled by adopting the dipole, the transmitting ground area is enlarged, and the size of the antenna is also enlarged. The impedance bandwidth of the conventional vertical thin-line monopole antenna is narrow, and the directional diagram of the existing monopole omnidirectional antenna is inevitably not a standard omnidirectional directional diagram any more after miniaturization due to the structure, the electrical performance and the like of the antenna.

Disclosure of Invention

The invention aims to solve the problems and provide a miniaturized broadband monopole omnidirectional antenna, which comprises a bottom plate, an annular metal sleeve, a dielectric plate and an antenna oscillator; the annular metal sleeve and the dielectric plate are fixedly connected with the bottom plate; the annular metal sleeves are arranged on the outer side of the dielectric plate in parallel; the antenna element is arranged on the outer side of the dielectric plate.

The invention has the beneficial effects that: the annular metal sleeve is additionally arranged at the bottom of the antenna, so that the defect of narrow impedance bandwidth inherent in the monopole antenna is overcome on the premise of ensuring small volume and light weight, the problem of deformation of a directional diagram of a miniaturized monopole antenna is solved, the standard form of the directional diagram of the omnidirectional antenna is ensured, the antenna is simpler in structure and easy to process, and batch production is facilitated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of an annular metal sleeve;

fig. 3 is a schematic diagram of a monopole antenna structure.

In the figure: 1-a monopole antenna dielectric layer; 2-monopole antenna metal patch; 3-ring-shaped metal sheet; 4-bottom plate.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1, the miniaturized wideband monopole omnidirectional antenna of the invention comprises a bottom plate, an annular metal sleeve, a dielectric plate and an antenna oscillator; the annular metal sleeve and the dielectric plate are fixedly connected with the bottom plate; the annular metal sleeves are arranged on the outer side of the dielectric plate in parallel; the antenna element is arranged on the outer side of the dielectric plate.

Furthermore, the antenna oscillator is a microstrip metal patch.

The bottom plate is a metal bottom plate. As shown in fig. 2, the structure of the annular metal sleeve is schematically shown; as shown in fig. 3, which is a schematic diagram of a monopole antenna structure. The annular metal sleeve and the medium plate are both arranged perpendicular to the metal bottom plate. The antenna oscillator adopts the microstrip metal paster mode, and the microstrip metal paster sets up in the surface of dielectric plate, widens metal paster width and thickens the medium microwave panel thickness that uses, and the homoenergetic increases antenna impedance bandwidth.

The annular metal sleeve is additionally arranged at the bottom of the antenna, so that the defect of narrow impedance bandwidth inherent in the monopole antenna is overcome on the premise of ensuring small volume and light weight, the problem of deformation of a directional diagram of a miniaturized monopole antenna is solved, the standard form of the directional diagram of the omnidirectional antenna is ensured, the antenna is simpler in structure and easy to process, and batch production is facilitated.

The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.