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A millimeter wave beamforming microstrip array antenna based on SIW and a design method thereof

A microstrip array and beamforming technology, applied in specific array feeding systems, individually powered antenna arrays, antennas, etc., can solve the complex design of the feeder network, the failure of the feeder network to achieve unequal amplitude and different phase feeding and other problems, to achieve the effect of low cost, light weight and good radiation performance

Active Publication Date: 2018-12-11
XIDIAN UNIV
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Problems solved by technology

[0003] To sum up, the current waveguide slot coupling feed microstrip antenna feed network generally uses unequal-amplitude in-phase feed or equal-amplitude in-phase feed. The feed network design is more complicated when beamforming the microstrip array antenna

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  • A millimeter wave beamforming microstrip array antenna based on SIW and a design method thereof
  • A millimeter wave beamforming microstrip array antenna based on SIW and a design method thereof
  • A millimeter wave beamforming microstrip array antenna based on SIW and a design method thereof

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] The invention proposes a microstrip array antenna fed by a combination of a microstrip string feeder and an SIW slot coupling feed. In the one-dimensional array design corresponding to the azimuth plane of the array antenna, the edge-fed microstrip rectangular patch is used as the antenna unit, and the amplitude distribution of the array element that meets the requirements of the sidelobe level is obtained by Chebyshev synthesis. The feeder form combined with the common microstrip transmission line and the common microstrip transmission line realizes the feed amplitude distribution and impedance matching of the singl...

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Abstract

The invention belongs to the technical field of millimeter wave microstrip array antenna and discloses a millimeter wave beam-shaped microstrip array antenna based on SIW and a design method thereof.The microstrip radiation layer is located on the upper surface of the upper dielectric substrate of the millimeter wave beam-shaped microstrip array antenna, The SIW feed network layer is located on the lower dielectric substrate of the millimeter-wave beam-shaped microstrip array antenna. Chebyshev synthesis and tapered microstrip gradient line are used to realize the single-side series-fed microstrip array, and the series-fed microstrip arrays are separated by the isolation band. Differential evolutionary optimization algorithm is used to beam shape the pattern. The upper surface of the SIWfeed network layer is slotted with wide edges, and the SIW feed network layer is composed of SIW-slit-Microstrip Line Coupling Structure, SIW Power Divider, SIW Phase Shifter and Cone SIW-Microstrip Line Converter. The invention realizes unequal amplitude and different phase feeding, realizes the specific shaped beam of the microstrip array antenna, and solves the problem that the traditional in-phase feeding is difficult to have the shaped beam pattern.

Description

technical field [0001] The invention belongs to the technical field of millimeter-wave microstrip array antennas, and in particular relates to a SIW-based millimeter-wave beamforming microstrip array antenna and a design method. Background technique [0002] At present, microstrip array antennas are widely used in systems such as mobile communications, satellite communications, broadcasting, radar, navigation, vehicle equipment, security, electronic countermeasures, and radio astronomy. Among the various feed forms of microstrip antennas, the coupled feed can achieve a wider antenna bandwidth, and since the feed network and the radiation patch are separated, the design of the feed network is relatively free. Among them, the waveguide slot coupling Feed is a commonly used feeding method for microstrip array antennas. The representative one is a waveguide slot-coupled fed microstrip antenna array designed by Li Jinjie. The antenna works in the X-band, and the radiation layer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q21/00H01Q21/06
CPCH01Q1/38H01Q1/50H01Q21/0006H01Q21/0087H01Q21/065
Inventor 邹艳林孔晓佳郭景丽孙保华
Owner XIDIAN UNIV
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