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A Low Sidelobe Level Series-fed Microstrip Antenna with Non-uniform Element Spacing

A microstrip antenna, low sidelobe technology, applied in antennas, antenna arrays, devices for manufacturing antenna arrays, etc., can solve problems such as difficulty and low sidelobe level, and achieve good performance, low sidelobe level, narrow The effect of beamwidth

Active Publication Date: 2019-07-12
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the mutual constraints between the sidelobe level and the beam width in theory, it is difficult to obtain a lower sidelobe level while satisfying the narrow beam, especially in the case of a limited number of array elements

Method used

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  • A Low Sidelobe Level Series-fed Microstrip Antenna with Non-uniform Element Spacing
  • A Low Sidelobe Level Series-fed Microstrip Antenna with Non-uniform Element Spacing
  • A Low Sidelobe Level Series-fed Microstrip Antenna with Non-uniform Element Spacing

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Embodiment Construction

[0036] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0037] The design of the series-fed microstrip antenna with non-uniform element spacing is divided into two parts, DEA algorithm optimization and antenna model design. The antenna is finally processed by a printed circuit board (Printed Circuit Board, PCB) process.

[0038] The model includes: (1) Rectangular microstrip antenna; (2) Microstrip line connecting array elements; (3) Feed point; (4) SMA connector positioning hole; (5) Ground metal via; (6) Metal ground ; (7) Medium.

[0039] Such as ...

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Abstract

The invention discloses a low sidelobe level series-fed microstrip antenna with non-uniform array element distance. Beam width, an array element size and the array element distance are used as constraint condition inputs, and the distance and the relative amplitude of an antenna array element, which are acquired, are optimized by a differential evolution algorithm. Compared with a series-fed microstrip antenna, the series-fed microstrip antenna has the advantages of lower sidelobe level and narrow beam width, and moreover, the conversion between the low sidelobe level and the beam width can be achieved by the differential evolution algorithm.

Description

technical field [0001] The present invention is based on a currently widely used serial-fed microstrip antenna structure, uses a differential evolution algorithm (Differential Evolution Algorithm, DEA) to optimize the spacing and width of array elements, and belongs to the technical field of antennas. Background technique [0002] Antennas are an important part of wireless mobile communication systems and radar systems. The rapid development of wireless communication and radar creates an urgent need for antennas with small size, low cost, high gain and easy integration. Microstrip antennas have the advantages of easy conformality, easy integration, easy access to various polarizations and multi-band work. The antenna array with a series feed structure is more compact in structure and smaller in size than the parallel feed antenna array. The sidelobe level is a very important parameter of the antenna. The existing series-fed microstrip antenna array generally uses classica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00
CPCH01Q21/0087
Inventor 王海明尹杰茜无奇余晨洪伟
Owner SOUTHEAST UNIV
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