Dual-polarized broadband antenna device based on dielectric integrated coaxial line

A dual-polarized antenna and medium integration technology, which is applied to antenna grounding devices, antennas, slot antennas, etc., can solve the problem of inability to adopt coplanar form, and achieve the effect of solving the problem of cross occlusion, convenient assembly and low cost

Active Publication Date: 2018-06-15
HARBIN INST OF TECH AT WEIHAI
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  • Abstract
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  • Claims
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Problems solved by technology

Therefore, the transition from micro to SICL cannot adopt the coplanar form, only the different form

Method used

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  • Dual-polarized broadband antenna device based on dielectric integrated coaxial line
  • Dual-polarized broadband antenna device based on dielectric integrated coaxial line
  • Dual-polarized broadband antenna device based on dielectric integrated coaxial line

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Embodiment

[0042] The present invention designs a specific cavity-backed dual-polarization antenna system device based on a medium-integrated coaxial cable, and uses full-wave electromagnetic simulation software to simulate the performance of the antenna array. The simulation experiment results verify the proposed method based on Feasibility and effectiveness of a cavity-backed dual-polarized antenna device with a dielectric-integrated coaxial cable.

[0043] The simulation results of the voltage standing wave ratio (VSWR) of port 1 and port 2 of the dual-polarized antenna designed by the present invention are respectively as follows Figure 7 with Figure 8 shown. The isolation between port 1 and port 2 is as Figure 9 shown. Within the working bandwidth, the voltage standing wave ratio of port 1 and port 2 is about 2, and the port isolation is greater than 20dB.

[0044] At the center at the frequency, the simulation results of the radiation pattern characteristics of the dual-pola...

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Abstract

The invention relates to the technical field of dual-polarized antenna sensor devices, in particular to a dual-polarized broadband antenna device based on a dielectric integrated coaxial line. A metalback cavity is arranged to reduce a back lobe of a directional pattern; with a dielectric loading unit, the input impedance of a dual-polarized antenna is adjusted to obtain a good input voltage standing wave ratio; on the basis of conversion balun structure from a dielectric integrated coaxial line to a coplanar strip line, a Vivaldi type symmetrical vibrator is excited by using a bending stripline; and with an impedance conversion circuit from the dielectric integrated coaxial line to the microstrip line, connection between an antenna input terminal and the coaxial cable is realized. The conversion balun structure from the dielectric integrated coaxial line to the coplanar strip line is in a bending type strip line feeding mode; the feeding coplanar strip lines of two polarized ports are isolated mutually at a bending part; and the heights of the coplanar strip lines of two polarized ports are different in a vertical direction. The dual-polarized broadband antenna device having thegreat actual application value is suitable for the radar, communication, navigation and other systems.

Description

Technical field: [0001] The present invention relates to the technical field of dual-polarized antenna sensor devices, specifically a dual-polarized broadband antenna based on a medium-integrated coaxial line, which is suitable for use in systems such as radar, communication, and navigation, and has relatively important practical application value. device. Background technique: [0002] A substrate integrated coaxial line (Substrate Integrated Coaxial Line, SICL) technology is a technology that planarizes a coaxial line in the traditional sense. Like traditional coaxial cables, SICL is a shielded, non-dispersive TEM waveguide structure. It exhibits the same characteristics as traditional coaxial cables, that is, wide bandwidth, low loss, high Q value, and small size, so it is very suitable for high-speed broadband interconnection applications. Substrate-integrated coaxial line (SICL) combines the advantages of coaxial line and planar transmission line. It can be realized b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q13/10H01Q19/02
CPCH01Q1/38H01Q1/48H01Q1/50H01Q13/106H01Q19/02
Inventor 宋立众周辉媛刘志勇王静周洪娟
Owner HARBIN INST OF TECH AT WEIHAI
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