Array antenna of circularly polarized dielectric resonator

A technology of dielectric resonator and array antenna, which is applied to the combination of antenna units with different polarization directions, etc., can solve the problems of complex feeding network, difficult to achieve effect, large loss, etc., achieve high gain characteristics, suppress antenna tail lobe, low-complexity effects

Inactive Publication Date: 2010-06-02
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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Problems solved by technology

However, when bidirectionally fed dielectric resonators are used as array elements of circularly polarized array antennas, since each dielectric resonator unit needs to be equipped with a power divider or branch coupler, the feeding network is complicated and the loss is large. Difficult to achieve the desired effect

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  • Array antenna of circularly polarized dielectric resonator
  • Array antenna of circularly polarized dielectric resonator
  • Array antenna of circularly polarized dielectric resonator

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Embodiment Construction

[0050] see figure 1 , shows a preferred implementation example of the circularly polarized dielectric resonator array antenna of the present invention, the circularly polarized array antenna 1 of this implementation example is applied at an operating frequency of 1.575GHz, and it includes a feed unit 31 and a four-unit Antenna array 21.

[0051] The above-mentioned feeding unit 31 includes a substrate 11 , a ground plane 12 and a feeding network 32 .

[0052] The substrate 11 has a first plane 111 and a second plane 112 on the opposite side. In this embodiment, the substrate 11 is a rectangular high-frequency dielectric plate with a relative permittivity of 6.15 and a thickness of 0.64mm. For: 160mm × 210mm.

[0053] The ground plane 12 is disposed on the second plane 112 of the substrate 11 , and the feed network 32 is disposed on the first plane 111 of the substrate 11 . The ground plane 12 is a rectangular metal plane with a size of 160mm×210mm.

[0054] The above-menti...

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Abstract

The invention discloses an array antenna of a circularly polarized dielectric resonator, which can be used in the field of communication. The array antenna of the circularly polarized dielectric resonator comprises a feeder unit and four unit antenna arrays, wherein the four unit antenna arrays comprise four linearly polarized dielectric resonator units with single-end feed; the feeder unit comprises a power divider with a phase-shifting function, an impedance converter and a coupler and can assign equal power for each linearly polarized dielectric resonator unit, and the phase difference of adjacent linearly polarized dielectric resonator units is 90 degrees. The array antenna of the circularly polarized dielectric resonator has the advantages of circularly polarized property, high gain and front-back ratio, simple feed network, easy manufacture, and the like.

Description

technical field [0001] The invention relates to an array antenna used in a communication system, in particular to a circularly polarized dielectric resonator array antenna. Background technique [0002] Today's human requirements for wireless communication not only require long transmission distances, but also high transmission rates, suppression of rain and fog interference, and anti-multipath reflection. Therefore, antennas are often required to have good circular polarization characteristics, high gain, and small size. and light weight characteristics. Especially in satellite communication systems, the requirements for antenna performance are even higher. Typically, satellite communication systems use reflector antennas with high gain. H.Moheb and others published a paper on the IEEE Antenna and Radio Wave Propagation Journal to study the reflector antenna working in the C-band, and proposed a reflector antenna that simultaneously realizes circular polarization and line...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24
Inventor 郑宏兴冯立营王利强孙程光
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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