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Broadband circularly-polarized antenna

A circularly polarized antenna and broadband technology, applied in the field of satellite communications, can solve the problems of narrow impedance bandwidth and axial ratio bandwidth of microstrip circularly polarized antennas, and achieve the effect of widening impedance bandwidth and axial ratio bandwidth, and good broadband characteristics

Inactive Publication Date: 2019-07-09
X TRIP INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a broadband circularly polarized antenna, aiming to solve the technical problem that the impedance bandwidth and axial ratio bandwidth of the existing microstrip circularly polarized antenna are relatively narrow

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Embodiment Construction

[0021] In order to further illustrate the technical means and effects of the present invention to achieve the above objectives, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] figure 1 It is a schematic structural diagram of a preferred embodiment of the broadband circularly polarized antenna of the present invention. figure 2 It is a side view of the broadband circularly polarized antenna of the present invention; image 3 It is a schematic diagram of the lower surface of the upper dielectric plate of the broadband circularly polarized antenna of the present invention; Figure 4 It is a schematic diagram of the upper surface of the upper dielectric plate of the broadband ...

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Abstract

The invention discloses a broadband circularly-polarized antenna. The antenna comprises an upper-layer dielectric plate and a lower-layer dielectric plate, wherein the upper-layer dielectric plate andthe lower-layer dielectric plate are connected through four metal columns, the lower surface of the upper-layer dielectric plate comprises four strip feeders, and the upper surface of the upper-layerdielectric plate comprises an annular patch; and a feed port is arranged at one end of each strip feeder, the four feed ports feed the four strip feeders through the four metal columns respectively,the four strip feeders couple electromagnetic wave energy to the annular patch, and the annular patch radiates the electromagnetic wave energy. According to the broadband circularly-polarized antenna,coupling feeding is performed on the annular patch of the antenna through the four strip feeders, impedance bandwidth and axial ratio bandwidth of the circularly-polarized antenna are increased, andthe circularly-polarized antenna has good broadband characteristics and circular polarization characteristics.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a broadband circularly polarized antenna. Background technique [0002] Circularly polarized antennas can resist the effects of multipath fading and reduce the loss of the ionosphere, and there is no requirement for the placement of the receiving antenna and the transmitting antenna. Therefore, broadband circularly polarized antennas are very suitable for use in mobile communications. However, the impedance bandwidth and axial ratio bandwidth of the microstrip circularly polarized antenna are very narrow, which prevents it from being widely used in mobile communications. Contents of the invention [0003] The main purpose of the present invention is to provide a broadband circularly polarized antenna, aiming to solve the technical problem of narrow impedance bandwidth and axial ratio bandwidth of the existing microstrip circularly polarized antenna. [0004] I...

Claims

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Application Information

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IPC IPC(8): H01Q1/50H01Q1/36
CPCH01Q1/36H01Q1/50
Inventor 曲美君邓力李书芳张贯京葛新科张红治
Owner X TRIP INFORMATION TECH CO LTD
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