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Method for designing Taylor-index composite non-equidistant modular array antenna

A technology of array antenna and design method, which is applied in the direction of antenna, antenna array, electrical components, etc., can solve the problem of not comprehensively considering the distribution position and excitation amplitude of array elements, and achieve the effect of reducing radiation loss and reducing design and manufacturing costs

Inactive Publication Date: 2014-04-09
XIAMEN UNIV
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Problems solved by technology

However, the above pattern synthesis methods only involve the array element distribution position of the unequal-distance array antenna, and do not comprehensively consider the array element distribution position and excitation amplitude, and its application often has great limitations.

Method used

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  • Method for designing Taylor-index composite non-equidistant modular array antenna
  • Method for designing Taylor-index composite non-equidistant modular array antenna
  • Method for designing Taylor-index composite non-equidistant modular array antenna

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Embodiment Construction

[0023] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0024] see figure 1 , the design steps of the embodiment of the present invention are as follows:

[0025] Step 1: Set the parameters required by the system according to the comprehensive gain requirements: the number of array elements, the minimum spacing between array elements, the side lobe level and the main lobe angle;

[0026] The unequal-distance array antenna of this embodiment is symmetrical about the center of the array, the total number of array elements is 2N=40, and the minimum spacing between array elements is 2s 1 =0.5λ, the side lobe level is SLL=-30dB, the main lobe angle is θ 0 =0°, such as figure 2 shown.

[0027] Step 2: Substituting the set parameters into the unequal distance Taylor array and exponential array with a certain truncation precision respectively, to obtain the distribution positions of the two groups of array el...

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Abstract

The invention discloses a method for designing a Taylor-index composite non-equidistant modular array antenna, and relates to a non-equidistant array antenna. The method comprises the following steps: setting parameters required by a system according to an integrated gain requirement, and respectively substituting a non-equidistant Taylor array and an index array to obtain the distribution positions of two groups of array elements; designing a cosine weighting function, and combining the distribution positions of the two groups of array elements to generate an array element distribution position configuration of a Taylor-index composite array; dividing an array antenna into eight modules in a proportion of 4:3:2:1 according to the total quantity of the array elements, and loading an excitation amplitude in the same proportion for the array elements in the modules to obtain the Taylor-index composite non-equidistant modular array antenna. By selecting an appropriate cosine weighting function, the minor lobe level of a radiation pattern can be controlled as required; a modular feed network can be realized by using a phase-impedance matched proportional power divider, so that a simple feed network is maintained, the radiation loss is reduced, and the design cost and the manufacturing cost are reduced; pattern integration can be flexibly regulated as required.

Description

technical field [0001] The invention relates to an array antenna with unequal spacing, in particular to a design method for a Taylor-exponential compound unequal-distance modular array antenna. Background technique [0002] Low sidelobe antennas can effectively suppress interference from other directions and are an important part of high-performance electronic systems. With the rapid development of modern wireless communication technology, many applications require the radiation pattern of the antenna to have low sidelobe characteristics. In order to better meet the system design requirements, it is often necessary to arrange several antennas in a certain way to form an array antenna. The arrangement can be arranged uniformly and unevenly. We call the array composed of unevenly arranged array elements an unequal array, and vice versa an equidistant array. An equidistant array antenna can precisely control the excitation of each array element to produce a radiation pattern w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00
Inventor 游佰强蔡龙瑞周建华李文卓薛团辉周涛
Owner XIAMEN UNIV
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