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Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna

A planar reflection array, dual-polarization technology, applied in antenna unit combinations with different polarization directions, radiating element structure and other directions, which can solve the problems of low gain and narrow frequency band.

Inactive Publication Date: 2014-02-05
BEIJING AEROSPACE FUDAO HIGH TECH
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  • Application Information

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Problems solved by technology

However, some current antennas have relatively narrow frequency bands, and the gain level is not very high.

Method used

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  • Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna
  • Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna
  • Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] The design of the planar reflectarray antenna of the present invention is based on the following principles:

[0022] The microstrip planar reflectarray antenna in the form of positive feed is used in the Ku band, and the influence of the shielding of the feed source on the electrical performance of the antenna is a factor that cannot be ignored. Therefore, in order to avoid the influence of the feed source shading, the form of the antenna adopts the microstrip reflectarray antenna with offset feed.

[0023] Passive microstrip resonant units of two frequencies are selected to be combined to achieve phase shifting of the transceiver frequency bands, and at the same time, dual polarization is achieved by opening a slot on each of the two units, and the slots of the two units are perpendicular to each other. Each resonance unit is selected as a d...

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Abstract

The invention discloses a Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna. A plane medium substrate is provided with two kinds of frequency passive micro-strip resonance units, each kind of frequency units is arranged in equal rows and equal lines, the distance between every two rows is equal to that between every two lines, the distance is less than or equal to one half of the wavelength of the highest work frequency free space, and each second frequency unit is located at the center of every four first frequency units in a square array. The center of all the first frequency units is provided with a set of gaps, the center of all the second frequency units is provided with a set of gaps perpendicular to the gaps of the first frequency units, and polarization in the two perpendicular directions is formed. Each kind of frequency units is of loop line patch structures with at least two layers, and the size of a loop is determined according to the phase position needing compensation. According to the Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna, the phase difference between a feed source and the space of each unit on the array surface is compensated by regulating the size of each micro-strip unit on the medium substrate, reflected waves achieve same-phase superposition in the special direction, pencil beams are formed, and the purpose of high gain is achieved.

Description

technical field [0001] The invention relates to electromagnetic wave antenna technology, in particular to a Ku-band dual-frequency dual-polarization microstrip planar reflection array antenna. Background technique [0002] With the vigorous development of satellite communications, high-gain antennas have become essential. Traditional high-gain antennas are mainly parabolic antennas and large array antennas. However, parabolic antennas are bulky, heavy, and because of their inherent curved surface structure, it is difficult to manufacture, especially in the millimeter wave frequency band. Parabolic antennas, on the other hand, lack the ability to scan across wide angles. Although the forced-feed large phased array antenna can meet the requirements of wide-angle scanning, it has the disadvantages of high cost, large loss, and relatively low efficiency. In order to make up for these shortcomings of the parabolic antenna and the traditional array antenna, foreign scholars fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24H01Q1/36
Inventor 孙科王涛阴贵源包金玉康学海关蔚林昕燕
Owner BEIJING AEROSPACE FUDAO HIGH TECH
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