Dielectric-loaded quadrifilar helix antenna of power-division phase-shift feed network

A feeding network and medium loading technology, which is applied to antenna unit combinations, antennas, electrical components and other directions with different polarization directions, can solve the problems of narrow bandwidth, high processing precision requirements, and difficult adjustment of circularly polarized four-armed helical antennas , to achieve the effect of realizing broadband circular polarization characteristics, overcoming high processing precision requirements, and avoiding unbalanced power feeding

Inactive Publication Date: 2010-05-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems of the existing medium-loaded circularly polarized four-arm helical antenna with narrow bandwidth, hig

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  • Dielectric-loaded quadrifilar helix antenna of power-division phase-shift feed network
  • Dielectric-loaded quadrifilar helix antenna of power-division phase-shift feed network
  • Dielectric-loaded quadrifilar helix antenna of power-division phase-shift feed network

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Embodiment Construction

[0032] The present invention will be further described in detail below with reference to the embodiments and drawings, but the implementation method and the scope of protection of the present invention are not limited thereto.

[0033] figure 1 The structure shown includes a new power-splitting phase-shift feed network and a medium-loaded four-armed helix, the structures of which are as follows Figure 2(a) , 2(b) , 2(c), 3(a), 3(b). Such as Figure 2(a) , 2(b) As shown, the feed network is composed of a microstrip dielectric board (1), a middle floor (6) and a microstrip dielectric board (2) stacked from top to bottom, and then vertically placed and combined with the microstrip dielectric board (3). The four-arm helical antenna is composed of four metal helixes, which are metal helix (18), metal helix (19), metal helix (20) and metal helix (21). The four metal helical wires are loaded on the dielectric cylinder (17) and supported by the dielectric cylinder (17), for rea...

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Abstract

The invention discloses a dielectric-loaded circular-polarized quadrifilar helix antenna of a power-division phase-shift feed network. The broadband feed network directly carries out equal amplitude and 90-degree phase difference feed on a four-wire helix antenna, thereby overcoming the problems of narrow bandwidth, inconvenient regulation and correction and high processing requirements of the traditional circular-polarized quadrifilar helix antenna which produces the 90-degree phase difference by self-phase-shift and simultaneously avoiding the need of designing balun due to unbalanced feed.The dielectric-loaded circular-polarized quadrifilar helix antenna has the advantages of compact structure, simple design and excellent broadband polarization property, thereby being very applicable to portable mobile terminals.

Description

technical field [0001] The invention relates to a medium-loaded helical antenna, in particular to a medium-loaded four-armed helical antenna that adopts a novel power division phase-shifting network feed, can work in a wide frequency band, has a small volume, and is suitable for a handheld terminal. Background technique [0002] In recent years, the service of satellite communication network has been paid more and more attention. With the increasing popularity of GPS and Beidou applications, there is an urgent need for a portable mobile terminal that can communicate with satellites anytime and anywhere. As the "eyes and ears" of the receiver, the performance of the antenna directly affects the quality of the receiver signal. [0003] The circularly polarized quadrifilar helical antenna was first proposed by C.C.Kilgus in 1968. The structure is composed of four metal helical wires, the four metal wires are fed through the coaxial line, and the phase shift is introduced at t...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q13/08H01Q21/24
Inventor 褚庆昕杜述刘沙
Owner SOUTH CHINA UNIV OF TECH
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