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Ultra-wideband strong mutual coupling phased array antenna based on grounded metal strip

A phased array antenna and metal strip technology, which is applied in the direction of antenna, antenna array, antenna grounding device, etc., can solve the problem that the antenna is difficult to achieve large-angle scanning, and the strong mutual coupling phased array antenna is difficult to scan ultra-wideband Problems such as angle range and large change

Inactive Publication Date: 2019-01-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the state of strong mutual coupling, the strong mutual coupling effect of the antenna makes the state of wide-angle scanning change greatly compared with that of side-firing, causing large fluctuations in its own active impedance. It is difficult for the antenna to achieve large-angle scanning, generally ± 45° scanning range
[0004] To sum up, it is difficult for general strong mutual coupling phased array antennas to sweep to a larger angle range within the ultra-wideband bandwidth

Method used

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  • Ultra-wideband strong mutual coupling phased array antenna based on grounded metal strip
  • Ultra-wideband strong mutual coupling phased array antenna based on grounded metal strip
  • Ultra-wideband strong mutual coupling phased array antenna based on grounded metal strip

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Embodiment 1

[0019] In this embodiment, the ultra-broadband strong mutual coupling phased array antenna based on the grounded metal strip adopts a 12×12 planar array form, such as figure 1 shown. It includes a lower metal floor 101, an upper dielectric substrate 103 for matching, and a middle vertical dielectric substrate 102 vertically placed between the metal floor and the upper dielectric substrate. Figure 2 shows figure 1 A schematic diagram of a basic antenna element in . The lower metal floor 101 is an aluminum plate with a thickness of 5.5 mm. The relative dielectric constant of the vertical dielectric substrate 102 is 2.2 and the thickness is 0.508 mm. Microstrip gradient baluns 104 and dipole metal patches 105 are printed on both sides of the vertical dielectric substrate 102. A grounding metal strip 107 connecting one arm of the dipole metal patch 105 and the metal floor 101 is also printed on the wider side of the gradient balun metal patch. image 3 shown as figure 1 The sc...

Embodiment 2

[0023] Specifically, a planar array of any size can be formed by extending each basic antenna unit in a two-dimensional direction. Other structures are the same as those described in detail in Example 1.

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Abstract

The invention discloses an ultra-wideband strong mutual coupling phased array antenna based on a grounded metal strip, belonging to the field of radar technology and wireless communication technology.The antenna comprises a lower metal floor, an upper dielectric substrate having a matching function, and a middle vertical dielectric substrate vertically arranged between the metal floor and the upper dielectric substrate. A metal patch of a microstrip gradient balun and a dipole is prin on that vertical type dielectric substrate; The inner core of the coaxial joint is connected with the microstrip graded balun through the metal floor, and the dipole metal patch is fed by the microstrip graded balun. Between one arm of that dipole metal patch and the metal floor, a ground metal strip is alsoarranged. The ground metal strip ensures the wide-angle scanning performance of the antenna by reducing the mutual coupling between adjacent antenna elements, and makes the E-plane scanning range ofthe strongly mutually coupled phased array antenna reach+ / - 60 degrees within the bandwidth of 6 times the frequency.

Description

technical field [0001] The invention belongs to the field of radar technology and wireless communication technology, in particular to an ultra-wideband strong mutual coupling phased array antenna based on a grounded metal strip, in particular to ultra-wideband and wide-angle scanning, suitable for microwave, millimeter wave and other radars and communications system. Background technique [0002] With the rapid development of electronic technology, the system's requirements for antennas are not limited to physical dimensions such as weight and profile, but also greatly increase the requirements for antenna radiation performance and operating bandwidth. Therefore, the realization of ultra-wideband antennas is extremely important. As early as the 1960s and 1970s, ultra-wideband technology has already played a role in the field of radar signal processing. In terms of communication technology, ultra-wideband antennas use measures to increase channel bandwidth to increase channe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q21/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q21/00
Inventor 屈世伟王亚茹邢唯益杨仕文
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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