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A wideband phased array antenna element and a radiation method thereof

A broadband phased array and antenna unit technology, applied in the directions of antennas, loop antennas, radiating element structures, etc., can solve the problems of narrow bandwidth of microstrip antennas and limit the application of microstrip loop antennas, and achieve easy integration and large-scale advantages. Commercial use, the effect of reducing connection loss

Active Publication Date: 2019-01-08
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

However, the bandwidth of the microstrip antenna is generally narrow, especially the miniaturized microstrip loop antenna, whose bandwidth is only about 30% of the traditional microstrip antenna, which means that the bandwidth of the microstrip loop antenna can only reach 1%~ 3%, which greatly limits the application of microstrip loop antennas in practical engineering

Method used

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  • A wideband phased array antenna element and a radiation method thereof
  • A wideband phased array antenna element and a radiation method thereof
  • A wideband phased array antenna element and a radiation method thereof

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Embodiment Construction

[0037] A broadband phased array antenna unit and a radiation method thereof of the present invention feed an external radio frequency signal into the broadband phased array antenna unit through a feeding coaxial joint, and the fed external radio frequency signal is respectively sent to the ring radiator and the ring radiator Two different current distributions are formed on the coordination formed by the matching branch and the additional resonance branch; the current on the ring radiator forms a resonance at a high frequency of the operating frequency, and the coordination formed by the ring radiator, the matching branch and the additional resonance branch The current forms a resonance at the low frequency of the working frequency. The generation of two resonance points effectively increases the bandwidth of the antenna unit, and the electromagnetic waves generated by it are radiated into the free space through the broadband phased array antenna unit; by matching the branch and...

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Abstract

The invention relates to a broadband phased array antenna unit and a radiation method thereof. The external radio frequency signal is fed into the broadband phased array antenna unit through a feedingcoaxial connector, and the fed external radio frequency signal forms two different current distributions on the cooperation of a ring radiator and a ring radiator, a matching branch and an additionalresonant branch respectively; the external radio frequency signal is fed into the broadband phased array antenna unit through a feeding coaxial connector. The current on the annular radiator resonates at high frequencies of the operating frequency, The loop radiator, the matching branch and the additional resonant branch form the resonant current at the low frequency, the two resonant points effectively increase the bandwidth of the antenna element, and the electromagnetic waves generated by the two resonant points are radiated into the free space by the wideband phased array antenna element;the loop radiator, the matching branch and the additional resonant branch form the resonant current at the low frequency. The impedance matching of wideband phased array antenna elements is realizedby changing the input impedance of wideband phased array antenna with matching branch and loop radiator. The invention can be widely applied to phased array antennas of mobile platforms such as satellite-borne, airborne, missile-borne and ground-based terminals.

Description

technical field [0001] The invention relates to a broadband phased array antenna unit and a radiation method thereof, which can be used in the field of antennas, especially wide bandwidth angular scanning antennas, and belong to the technical field of electromagnetic radiation. Background technique [0002] The highly integrated phased array antenna has the advantages of beam agility and high reliability, and can be widely used in various mobile wireless platforms. In order to improve the system capacity, output transmission rate and other requirements, the antenna needs to have broadband characteristics. For example, in the Ka-band phased array antenna used in the future satellite communication system, the antenna bandwidth needs to reach 10%. [0003] The microstrip antenna has the advantages of low profile and light weight, and has a very wide demand in the engineering field. The microstrip loop antenna is a miniaturized microstrip antenna unit, while reducing the size ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q7/00
CPCH01Q1/38H01Q1/50H01Q7/00
Inventor 李岩田步宁李若昕吕鹏张建波王博伟马俊
Owner XIAN INSTITUE OF SPACE RADIO TECH
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