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Low-profile dual-polarization strong-coupling ultra-wideband planar dipole phased array antenna

A phased array antenna and ultra-wideband technology, applied in the field of antenna engineering technology and infinite communication, to achieve the effect of reducing standing waves, reducing the profile height, and being conducive to easy conformality

Inactive Publication Date: 2020-12-01
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

However, the antenna is still single-polarized. The main reason is that the vertical antenna is relatively difficult in the spatial structure to realize that the two antennas are placed perpendi

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  • Low-profile dual-polarization strong-coupling ultra-wideband planar dipole phased array antenna
  • Low-profile dual-polarization strong-coupling ultra-wideband planar dipole phased array antenna
  • Low-profile dual-polarization strong-coupling ultra-wideband planar dipole phased array antenna

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[0023] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0024] The strongly coupled ultra-wide bandwidth angular scanning low-profile planar dipole phased array antenna in this embodiment adopts the form of a 16×16 planar array, such as figure 2 shown. Its basic antenna unit such as figure 1shown. The lowermost aluminum metal floor 100 plays a role of fixing and supporting, and at the same time, it can reflect the energy radiated back by the antenna, thereby increasing the gain and directivity of the antenna. The vertical dielectric substrate 101 is an antenna feeding balun, which plays the role of impedance transformation and unbalanced-balanced current transformation. Metal patches combined with rectangular and trapezoidal shapes are printed on the front and rear surfaces to form a microstrip l...

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Abstract

The invention discloses a low-profile dual-polarization strong-coupling ultra-wideband planar dipole phased array antenna and a development method thereof. By means of a crossed dipole structure, twokinds of polarized wave dipoles which are perpendicular to each other in radiation are placed in one plane; an artificial metamaterial impedance matching layer arranged above the antenna replaces a traditional dielectric matching layer, so that the profile height and the overall quality of the antenna are effectively reduced, and the antenna is easier to process and install. The use of a resistivematerial improves standing waves in the whole frequency band and expands the low-frequency bandwidth at the same time, so that the antenna has better broadband characteristics. In a 0.25-2GHz (8: 1)frequency band, active standing waves scanned by +/-60-degree scanning of an E surface and +/-45-degree scanning of an H surface are smaller than 3, the average radiation efficiency of each azimuth surface is higher than 70%, and the profile height is only 0.453 high-frequency wavelengths; and the antenna is suitable for application platforms requiring ultra wide band, dual polarization and low profile.

Description

technical field [0001] The invention belongs to the fields of antenna engineering technology and wireless communication technology, and in particular relates to an ultra-wideband phased array antenna based on strong mutual coupling effect, a wide-angle scanning low-profile phased array antenna and a development method thereof. Background technique [0002] In the past few decades, phased array antennas with broadband and wide-angle scanning functions have received more and more attention in the military and commercial fields, and are mostly used in systems such as satellite communications and radio astronomy. The traditional implementation method of broadband phased array antenna is usually to design the antenna unit with wider bandwidth than the expected antenna array, and then select the appropriate array method according to the scanning requirements, and take measures to suppress or reduce the coupling between the units , while using other structures to compensate for imp...

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Application Information

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IPC IPC(8): H01Q21/24H01Q1/36H01Q1/50
CPCH01Q1/36H01Q1/50H01Q21/24
Inventor 杨仕文李志伟陈益凯屈世伟
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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