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Circularly-polarized broadband base station antenna

A base station antenna, circularly polarized technology, applied in the microwave field, can solve the problems of uncertain position of receiving antenna, loss of transmitting antenna and receiving antenna, etc., and achieve the effect of simple structure

Inactive Publication Date: 2014-01-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the electromagnetic wave propagates, it will reflect, diffract, and scatter, causing its polarization to change, and the position of the receiving antenna in mobile communication is uncertain, resulting in loss due to polarization mismatch between the transmitting antenna and the receiving antenna.

Method used

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  • Circularly-polarized broadband base station antenna
  • Circularly-polarized broadband base station antenna
  • Circularly-polarized broadband base station antenna

Examples

Experimental program
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Effect test

Embodiment

[0035] Such as figure 1 , Figure 4 As shown, a broadband circularly polarized base station antenna includes an antenna radiation unit 1, a feed structure 2 and a reflector 3, and the antenna radiation unit 1 is fixed on the reflector 3 through the feed structure 2, and the feed structure 2. Vertically placed between the antenna radiation unit 1 and the reflector 3, specifically: the upper end of the feed structure is welded to the center of the antenna radiation unit, and the lower end of the feed structure is welded to the center of the reflector.

[0036] Such as figure 2 As shown, the antenna radiation unit 1 includes a main radiation ring 4, a parasitic ring and a dielectric substrate 8 of the radiation unit, the main radiation ring 4 and the parasitic ring are printed on the dielectric substrate 8 of the radiation unit, and the parasitic ring is nested in the main radiation unit The blank space of the radiation ring 4, the blank space is a blank area in the main radia...

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PUM

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Abstract

The invention discloses a circularly-polarized broadband base station antenna. The circularly-polarized broadband base station antenna comprises an antenna radiation unit, a feed structure and a baffle board, wherein the antenna radiation unit is fixed to the baffle board through the feed structure, the feed structure is perpendicularly placed between the antenna radiation unit and the baffle board, and the antenna radiation unit comprises a main radiation ring, a spurious ring and a radiation unit dielectric substrate. Due to the facts that grooving is carried out at an appropriate position of an annular structure to achieve circular polarization, the spurious ring is used for strengthening the circularly-polarized bandwidth, and a high-impedance bandwidth is obtained through micro-strip and gap coupling feed, and the circularly-polarized broadband base station antenna is stable in radiation pattern, the gain can reach 9dBi, and the circularly-polarized broadband base station antenna is suitable for serving as an antenna of a mobile communication base station.

Description

technical field [0001] The invention relates to the field of microwave technology, in particular to a broadband circularly polarized base station antenna. Background technique [0002] In the wireless system, the base station can be regarded as a wireless modem, and as a transceiver station, it is responsible for receiving and sending processing of mobile signals. The base station antenna is an important part of the base station. Traditional base station antennas are linearly polarized antennas, including vertically polarized base station antennas, vertical and horizontal dual-polarized antennas, and ±45° dual-polarized base station antennas. When signals are sent and received via a linearly polarized antenna, polarization matching is required to achieve better reception. When the electromagnetic wave propagates, it will reflect, diffract, and scatter, causing its polarization to change, and the position of the receiving antenna in mobile communication is uncertain, result...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24H01Q13/10H01Q7/00
Inventor 李融林崔悦慧莫小龙全旭林
Owner SOUTH CHINA UNIV OF TECH
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