Ku-band low-profile dual-frequency dual-polarization array antenna

An array antenna and low-profile technology, which is applied in the field of satellite communication, can solve the problems that surface waves affect antenna radiation efficiency, and achieve the effects of small loss, improved utilization efficiency, and expanded bandwidth

Inactive Publication Date: 2011-12-14
SHANGHAI JIAO TONG UNIV +1
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  • Abstract
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Problems solved by technology

[0006] Shi Qing and others published the article in the Journal of Microwave Science, Volume 20, Issue 4 in December 2004: Experimental Design of Dual-frequency Dual Circular Polarization Microstrip Antenna, and proposed to use a single-patch aperture...

Method used

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  • Ku-band low-profile dual-frequency dual-polarization array antenna
  • Ku-band low-profile dual-frequency dual-polarization array antenna
  • Ku-band low-profile dual-frequency dual-polarization array antenna

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Embodiment

[0022] Such as figure 1 with figure 2 As shown, the Ku-band low-profile dual-frequency dual-polarization array antenna described in this embodiment is a multi-layer sandwich structure composed of eight layers, which are the parasitic unit layer 1, the first dielectric plate layer 2, the air layer 3, and the excitation unit. 4 and the first polarized feeding matching network layer 5, the second dielectric board layer 6, the grounding board layer 7, the third dielectric board layer 8 and the second polarized feeding matching network layer 9, wherein:

[0023] The parasitic unit layer 1 is in close contact with the first dielectric plate layer 2 .

[0024] The excitation unit 4 and the first polarization feeding matching network 5 are located on the same layer surface.

[0025] The second polarization feeding matching network 9 is connected to the excitation unit 4 through a probe 10 .

[0026] The dielectric plate layer adopts a low dielectric constant to improve the bandwid...

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Abstract

A Ku-band low-profile dual-frequency dual-polarization array antenna in the field of satellite communication technology, a multi-layer sandwich structure composed of eight layers, followed by a parasitic unit layer, a first dielectric plate layer, an air layer, an excitation unit and a first The polarized feeding matching network layer, the second dielectric board layer, the grounding board layer, the third dielectric board layer and the second polarized feeding matching network layer. The invention can meet the impedance broadband requirement of the receiving and receiving frequency band of the current Ku-band satellite communication, and the isolation degree of the horizontal polarization and the vertical polarization port is better than 30dB.

Description

technical field [0001] The invention belongs to the antenna in the technical field of satellite communication, in particular to a low-profile dual-frequency dual-polarization array antenna working in the Ku band. Background technique [0002] Nowadays, mobile video, radio equipment and wireless networks are becoming more and more diverse. For example, digital wireless TV, radio, satellite navigation and wireless networks all use wireless transmission, and the operation of these communication systems must be responsible for the transmission and communication of signals through antennas. Receive, so the antenna is a very important part of the wireless system. At the same time, in modern aerospace, communication, radar and other military and civilian application fields, such as airborne, spaceborne and various satellite communication systems, are developing in the direction of miniaturization, light weight and multi-functional integration. In terms of performance, there is an ...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q21/24H01Q1/38
Inventor 徐烨梁仙灵耿军平朱宏军金荣洪叶声张丽清曾勇
Owner SHANGHAI JIAO TONG UNIV
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