K/Ka wave band dual-band dual circularly polarized antenna based on gap waveguide

A gap waveguide, dual circularly polarized technology, applied to antennas suitable for movable objects, antennas, devices that make antennas work in different bands at the same time, etc., can solve the problem of low power capacity and dual circularly polarized antenna radiation efficiency. Low problems, achieve high gain, improve radiation efficiency and power capacity, reduce processing difficulty and assembly accuracy

Pending Publication Date: 2022-04-12
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a K/Ka-band dual-band dual-circularly polarized antenna based...

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  • K/Ka wave band dual-band dual circularly polarized antenna based on gap waveguide
  • K/Ka wave band dual-band dual circularly polarized antenna based on gap waveguide
  • K/Ka wave band dual-band dual circularly polarized antenna based on gap waveguide

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Embodiment

[0063] as attached Figure 1-3 As shown, this embodiment provides a K / Ka-band dual-band dual-circularly polarized antenna based on a gap waveguide, including a first power division and radiation layer 1, a second power division and radiation layer arranged in sequence from bottom to top 2 and the grid layer 3; wherein, the first power division and radiation layer 1, the second power division and radiation layer 2 and the grid spacer layer 3 are all metal structures.

[0064] The first power division and radiation layer 1 includes a first power distribution network and a left-handed circularly polarized radiation unit, and the first power distribution network is a four-divided power distribution network with the same phase using slot-gap waveguide-ridge-gap waveguide-slot-gap waveguide ; The left-handed circularly polarized radiation unit satisfies the left-handed circularly polarized radiation condition.

[0065] The first work division and radiation layer 1 includes a first ...

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Abstract

The invention discloses a K/Ka waveband dual-band dual-circularly polarized antenna based on gap waveguide. The K/Ka waveband dual-band dual-circularly polarized antenna comprises a first power division and radiation layer, a second power division and radiation layer and a gate interlayer which are sequentially arranged from bottom to top, the first power division and radiation layer comprises a first power distribution network and a left-hand circular polarization radiation unit, and the left-hand circular polarization radiation unit meets a left-hand circular polarization radiation condition; the second power division and radiation layer comprises a second power distribution network and a right-handed circular polarization radiation unit, and the right-handed circular polarization radiation unit meets the right-handed circular polarization radiation condition; the first power distribution network and the second power distribution network are one-to-four same-phase power distribution networks formed by slot gap waveguide-ridge gap waveguide-slot gap waveguide; the grid layer is used for reducing the grating lobe level of a far-field pattern; the antenna is high in efficiency and high in gain, and achieves a good function of a dual-band dual-circularly polarized antenna. A dielectric substrate is not needed, and the radiation efficiency and the power capacity of the antenna are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a K / Ka band dual frequency band dual circular polarization antenna based on a gap waveguide. Background technique [0002] The antenna is a key component of the wireless communication system, which plays the role of energy conversion between the guided electromagnetic wave and the radiated electromagnetic wave; compared with the linearly polarized antenna, the circularly polarized antenna has the functions of resisting rain and fog attenuation, suppressing multipath interference signals and relaxing reception and communication. The outstanding advantage of the limitation of the installation orientation of the transmitting antenna; one antenna can transmit and receive circularly polarized waves with opposite directions in two frequency bands, and only one antenna can complete the transmitting and receiving functions of different frequencies, which can save space and reduce the com...

Claims

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Application Information

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IPC IPC(8): H01Q1/28H01Q1/38H01Q5/20H01Q5/30H01Q15/24
Inventor 李建星吴思凡闫森贺雨晨陈娟
Owner XI AN JIAOTONG UNIV
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