Sequential phase feed circular polarization dielectric resonant antenna array

A technology for dielectric resonant antennas and antenna arrays, which is applied in the direction of separately energized antenna arrays, antenna arrays, and specific array feeding systems. problem, to achieve good circular polarization bandwidth, avoid radiation, good VSWR bandwidth effect

Inactive Publication Date: 2019-10-18
HEFEI UNIV OF TECH
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Problems solved by technology

But at the same time, the frequency band of the microstrip antenna is narrow, there are conductor and dielectric losses, and it will stimulate the surface wave to reduce the radiation efficiency

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  • Sequential phase feed circular polarization dielectric resonant antenna array
  • Sequential phase feed circular polarization dielectric resonant antenna array
  • Sequential phase feed circular polarization dielectric resonant antenna array

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Embodiment Construction

[0028] In this example, if figure 1 , figure 2 As shown, a sequential phase-feed circularly polarized dielectric resonant antenna array includes: n dielectric resonators 1, four rotating feed networks 8, Wilkinson power dividers divided into two 9, dielectric substrate 4, coaxial Feed 5, metal probe 3, strip line 2, wherein, n is an even number; in this embodiment, as figure 1 As shown, n=4; that is, four dielectric resonators 1 are respectively located at the four corners of the dielectric substrate 4 and form an antenna array. Reasonable control of the distance between each dielectric resonator will result in a narrower width of the main lobe radiation pattern.

[0029] Such as figure 1 As shown, n dielectric resonators 1 are arranged in a matrix form on a dielectric substrate 4 to form an antenna array. In the form of an array, the axial ratio of the antenna will be significantly larger than that of a dielectric resonant antenna element fed by a Wilkinson power divider...

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Abstract

The invention discloses a sequential phase feed circular polarization dielectric resonant antenna array which is composed of n dielectric resonators, a four-rotation feed network, Wilkinson power distributors, a dielectric substrate, coaxial feeding, metal probes and strip lines. The N dielectric resonators form an array on the dielectric substrate. The feed network is composed of one four-rotation feed network and four one-to-two Wilkinson power distributors which are located on the central back of the dielectric substrate. The coaxially transmitted energy is fed to the two frequency dividersvia the feed network and coupled to the orthogonally arranged strip lines on the side wall of the dielectric resonator by the two metal probes arranged at the output end of the frequency divider. Thearray can realize narrower main lobe radiation pattern width, higher gain, wider impedance bandwidth and axial ratio bandwidth, thereby enabling the antenna to have further excellent and stable circular polarization performance and better meet the index requirements of modern communication technology for the circular polarization communication system.

Description

technical field [0001] The invention belongs to the technical field of circular polarization communication in modern communication systems, and in particular relates to a sequential phase-feed circular polarization rectangular dielectric resonant antenna array. Background technique [0002] With the development of space and communication technology, circularly polarized antennas play an important role in the wireless field because of their great advantages. Linearly polarized waves are prone to polarization deflection and attenuation in the transmission environment, while circularly polarized waves will reverse when encountering obstacles. Anti-interference ability and anti-rain and fog ability, and are widely used in civilian and military fields. At present, circularly polarized antennas are mainly divided into the following two forms, although each has its own characteristics in terms of performance, but both have certain deficiencies. [0003] 1. Helical antenna, helica...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50H01Q15/24H01Q21/00H01Q21/06
CPCH01Q1/36H01Q1/48H01Q1/50H01Q15/24H01Q21/0006H01Q21/061
Inventor 姜兆能赵晓燕赵宏志黄诗纯宣晓峰黄英计方正王沚欣
Owner HEFEI UNIV OF TECH
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