One-dimensional wide-angle scanning phased array based on rectangular patch TM20 mode

A rectangular patch, TM20 technology, applied in the field of one-dimensional wide-angle scanning phased array, can solve the problems of complex feeding network and poor matching problem, so as to improve the scanning angle, reduce mutual coupling, increase The effect of cell spacing

Active Publication Date: 2018-05-08
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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  • Application Information

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Problems solved by technology

The array realizes scanning in one-dimensional direction -81°~81°, and achieves better gain flatness in the scanning range, but requires a more complicated feeding network, and does not solve the matching problem well

Method used

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  • One-dimensional wide-angle scanning phased array based on rectangular patch TM20 mode
  • One-dimensional wide-angle scanning phased array based on rectangular patch TM20 mode
  • One-dimensional wide-angle scanning phased array based on rectangular patch TM20 mode

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] This specific embodiment provides a one-dimensional wide-angle scanning phased array based on the rectangular patch TM20 mode, and its top view, front view and bottom view are as follows Figure 1-3 As shown, it includes an array antenna patch, a feeding part and a dielectric substrate 3; the array antenna patch includes eight identical units arranged at equal intervals; each unit includes a rectangular radiation patch 1 and a parasitic patch 2. The rectangular radiation patch 1 is a rectangular patch with two opposite four slits, and the shape of the parasitic patch 2 is the same as that of the rectangular radiation patch 1; the array antenna patch is printed on the dielectric substrate 3 The upper surface of the dielectric substrate; the lower surface of the dielectric substrate is printed with a metal floor 4; the feeding part is an SMA connec...

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Abstract

The invention provides a one-dimensional wide-angle scanning phased array based on a rectangular patch TM20 mode, and relates to the technical field of microwave antennas. The structure of the phasedarray provided by the invention is mainly composed of an array antenna patch, a feeding part and a dielectric substrate, and the array is composed of 8 identical units arranged at equal intervals. Since the performance of the phased array has a great relationship with the array units, the invention makes an improvement based on the rectangular patch TM20 mode, expands the unit beam, and further broadens the phased array scanning range. Under the premise of ensuring the same polarization in the scanning process, through miniaturization technology, the unit size is reduced, the unit spacing is increased to a certain extent, the mutual coupling effect among the units is reduced, and a good impedance matching effect in the beam scanning process is ensured.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, in particular to a one-dimensional wide-angle scanning phased array based on a rectangular patch TM20 mode. Background technique [0002] With the development of modern aerospace technology, the requirements for various radar phased array antennas are increasing. Compared with the traditional mechanical scanning radar system, the beam of the phased array antenna changes more quickly, and can realize fast and inertialess scanning. At the same time, in order to reduce the occupation of the overall volume by the antenna part and reduce the profile, the planar phased array has received more and more attention. However, the beam scanning range of the planar phased array antenna is severely limited. As the scanning angle increases, the antenna gain will decrease severely, and effective beam scanning cannot be formed. Generally speaking, the one-dimensional scanning limit angle of the plana...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q21/00H01Q21/08
CPCH01Q1/38H01Q1/48H01Q1/50H01Q21/0006H01Q21/08
Inventor 丁霄高国峰吴雨明程友峰
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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