Beam broadening device of broadband array antenna

An array antenna and beam broadening technology, which is applied to antennas, antenna arrays, and antenna arrays that are powered separately, to achieve the effect of improving low-frequency gain and widening high-frequency beam width

Pending Publication Date: 2022-04-05
嘉兴诺艾迪通信科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

These existing technologies solve the problem of the low-frequency gain of the broadband array antenna and the high-frequency beam width in the direction parallel to the arrangement dire

Method used

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  • Beam broadening device of broadband array antenna
  • Beam broadening device of broadband array antenna
  • Beam broadening device of broadband array antenna

Examples

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Embodiment Construction

[0044] see image 3 , the beam broadening device for broadband array antenna proposed in this application includes at least four antenna units 10 , at least one low-pass filter 20 , at least one matching unit 30 , and only one power divider 40 .

[0045] All antenna units 10 are arranged along a straight line to form a one-dimensional array antenna. All antenna units 10 are divided into two groups according to their positions in the one-dimensional array antenna. The antenna units at the center of the one-dimensional array antenna are called central antenna units, and the antenna units at the edge of the one-dimensional array antenna are called edge antenna unit. The edge antenna units are axisymmetric with respect to the central antenna unit. For example, when the total number of antenna units is 4, the two antenna units in the middle are central antenna units, and the two peripheral antenna units are edge antenna units. For example, when the total number of antenna units ...

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Abstract

The invention discloses a beam broadening device of a broadband array antenna. The beam broadening device comprises at least four antenna units, at least one low-pass filter, at least one phase matching unit and only one power divider. The antenna units are arranged along a straight line to form a one-dimensional array antenna; the one-dimensional array antenna adopts an unequal-interval arraying mode; the minimum array pitch D in the entire array antenna is less than the high-frequency wavelength [lambda] H. Each edge antenna unit is connected with a low-pass filter; the low-pass filter is used for realizing gradient feed amplitude weighting; each central antenna unit is connected with one phase matching unit; the phase matching unit is used for compensating a phase error caused by introduction of a low-pass filter; and the power divider is used for synthesizing the output signals of all the antenna units together to form the broadband array antenna. The low-frequency gain and the high-frequency beam width of the broadband array antenna can be met at the same time.

Description

technical field [0001] The present application relates to a beam broadening device of a broadband array antenna. Background technique [0002] An array antenna, also called an antenna array, refers to an antenna system composed of multiple identical single antennas (called array elements, antenna units or unit antennas) arranged according to certain rules. [0003] If the bandwidth is determined by the impedance characteristic, that is, the voltage standing wave ratio (VSWR), then whether the array antenna has a broadband characteristic is determined by the antenna unit. The broadband characteristics of the antenna refer to an upper limit frequency f H at least the lower frequency f L There is no significant change in the directional characteristics and impedance characteristics of the antenna in the frequency band twice that of . Antennas with broadband characteristics are called broadband antennas. [0004] An array antenna composed of multiple antenna elements can ach...

Claims

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Application Information

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IPC IPC(8): H01Q21/08H01Q21/00H01Q3/28H01Q3/34
Inventor 王玉峰
Owner 嘉兴诺艾迪通信科技有限公司
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