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Low profile broadband wide angle phased array antenna with large element spacing

A phased array antenna and unit spacing technology, which is applied in the field of radar technology, can solve the problems of increased T/R components, high antenna profile, and high cost of phased array antennas, so as to reduce the active voltage standing wave ratio and improve impedance matching. Effect

Inactive Publication Date: 2019-04-26
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the compact arrangement of antenna array elements, the number of antenna elements is also greatly increased, which means that the number of T / R components is also further increased, which increases the complexity of feed design and further increases the cost
At the same time, due to the need to use a balun structure for feeding, the profile of the antenna is high, which is not conducive to the miniaturization of the system
[0004] To sum up, the general phased array antenna is not only expensive, but also difficult to achieve low profile and large scanning angle in a wide bandwidth.

Method used

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  • Low profile broadband wide angle phased array antenna with large element spacing
  • Low profile broadband wide angle phased array antenna with large element spacing
  • Low profile broadband wide angle phased array antenna with large element spacing

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A kind of low profile wide bandwidth angle phased array antenna with large element spacing of this embodiment adopts the planar array form of 8 * 8, such as figure 1 shown. It includes a metal floor 101, a middle dielectric substrate 102, a foam layer 103, and a matching layer 104 stacked from bottom to top. Figure 2 shows figure 1 A schematic diagram of a basic antenna element in . The lowermost metal floor 101 is an aluminum plate with a thickness of 3 mm. The relative dielectric constant of the middle dielectric substrate 102 is 1.98 and the thickness is 3.048 mm. Dipole metal patches 106 and parasitic metal patches 107 are printed on the upper surface. Strong mutual coupling can be generated between the dipole metal patch and the parasitic metal patch, increasing the bandwidth of the antenna. The matching layer 104 has a relative permittivity of 2.94 and a thickness of 1.27mm. The upper surface is printed with a split ring metal patch 105, which is used to improv...

Embodiment 2

[0026] Specifically, each basic antenna unit is extended in two-dimensional directions to form a planar array of any size. Other structures are the same as those described in detail in Example 1.

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Abstract

The invention discloses a low profile broadband wide angle phased array antenna with large element spacing, and belongs to the technical field of radar and wireless communication. The antenna comprises a metal floor, an intermediate dielectric substrate printed with a dipole metal patch and a parasitic metal patch, a foam layer and a matching layer printed with a cracked ring metal patch layered from bottom to top in the stacking mode. Antenna elements are arranged by adopting by triangle grids. The antenna has the advantages of large element spacing, low profile, wide operating frequency bandwidth and large scanning angle, and can be used for radar and communication systems requiring large cell spacing, low profile, wide working band and large scanning angle.

Description

technical field [0001] The invention belongs to the field of radar technology and wireless communication technology, and in particular relates to a phased array antenna with a large element spacing, a low profile, and a wide bandwidth angle, in particular to large element spacing, low profile, and wide bandwidth angle scanning, and is suitable for microwave, millimeter wave, etc. in radar and communication systems. Background technique [0002] With the rapid development of modern mobile communication technology and military electronic systems, wireless systems have put forward higher and higher requirements for antennas. Its structure is required to have low-profile characteristics to realize the integration and miniaturization of the antenna, and improve its ability to conformally integrate with the communication combat platform, thereby reducing the size of the system structure and improving the flexibility and mobility of the system; it is required to have a fast beam S...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50
Inventor 屈世伟邢唯益李伟张鹏遥
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA