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Planar high-gain microstrip reflectarray antenna

A reflective array antenna and high-gain technology, applied in the field of transmitting array antennas, can solve the problems of small phase adjustment range of reflective units, difficult design and processing, and small adjustment flexibility, and achieve easy to find processing units, light weight, and difficult processing small effect

Active Publication Date: 2015-02-18
天元瑞信通信技术股份有限公司
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Problems solved by technology

[0003] This patent aims to solve the problem of cross-polarization of the feed source, as well as the difficulty of design and processing, the gain is not high enough, the phase adjustment range of the reflection unit is small, and the adjustment flexibility is small.

Method used

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] The present invention designs two folded planar microstrip reflective array antennas whose scanning angles are 0 degree and 45 degree respectively.

[0025] like figure 1 As shown, the feed source adopts a 2×2 microstrip patch array, and the array element is a microstrip patch with a length of 12.9mm and a width of 8.7mm. A one-to-four power splitter can be used, but the performance is not as good as two-stage one-two The power divider is good, but the design is relatively troublesome, but the one-point two-power divider is easy to realize, convenient to process, and the performance is good, which meets the requirements, so this feed uses a two-stage one-point two power divider for feeding.

[0026] figure 1 The dimensions in the following table:

[0027] z1

z2

z3

z4

z5

15.5mm

2.5mm

8.75mm

11.45mm

...

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Abstract

The invention provides a planar high-gain microstrip reflectarray antenna comprising a feed source, a polarized grid and a reflecting surface. The feed source is composed of a 2*2 microstrip patch array. The polarized grid is composed of a printed dipole array. The reflecting surface is in an array unit design composed of 96 reflecting units; a microstrip metal patch layer of each reflecting unit is a square microstrip patch. The polarized grid and the reflecting surface are hinged and fixed through a support of metal posts, so that polarization direction of printed dipoles of the polarized grid is consistent to that of the feed source. In this way, a foldable reflectarray antenna is made. The planar high-gain microstrip reflectarray antenna has the advantages of simplicity in structure and feed, high gain, low profile, high polarization purity and the like; processing is easy, manufacturing cost is low, and the antenna is easily acceptable and producible to processing enterprises.

Description

technical field [0001] The invention relates to an antenna, especially a transmitting array antenna. Background technique [0002] For a long time, the fields of satellite communication, radar detection, deep space exploration and radio astronomy research require high-gain, low-profile miniaturized antennas to achieve long-distance wireless communication, and reflectarray antennas play an important role. The reflectarray antenna has the characteristics of miniaturization and high gain. The reflectarray antenna is mainly composed of a polarized grid, a feed source and a reflective surface. The incident wave of the reflectarray antenna is provided by the feed source, and the electromagnetic wave is reflected to the reflective surface through the polarized grid. , the electromagnetic wave is reflected twice by the reflective surface to form an electromagnetic beam in space. The general technology uses a rectangular or conical horn antenna as a feed source, but the cross-polari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q15/14H01Q15/24H01Q19/10H01Q21/00
Inventor 韦高佟进款韩旭
Owner 天元瑞信通信技术股份有限公司
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