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Dipole patch antenna based on ternary tree arc-shaped fractal structure

An arc structure, patch antenna technology, applied in resonant antenna, radiating element structure form, antenna grounding switch structure connection and other directions, can solve the problems of poor impedance matching, large input reflection coefficient, etc., to achieve small size, good The effect of impedance matching and large radiation area

Active Publication Date: 2017-08-18
JIANGXI UNIV OF SCI & TECH
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Problems solved by technology

These antennas have their own advantages, but some impedance matching is not very good, and the value of the input reflection coefficient at the operating frequency is relatively large

Method used

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  • Dipole patch antenna based on ternary tree arc-shaped fractal structure
  • Dipole patch antenna based on ternary tree arc-shaped fractal structure
  • Dipole patch antenna based on ternary tree arc-shaped fractal structure

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Embodiment Construction

[0019] The invention will be further illustrated by the following examples.

[0020] 1. The setting of the antenna parameters of the present invention is realized according to the following data ( figure 2 ).

[0021] ① The antenna width antenna_width(AW) is 0.6mm, and the antenna's linear length antenna_length(AL) is 8.2mm;

[0022] ② The radius1 of the first-order arc structure of the antenna is 3mm, the angle between each first-order arc and the adjacent arc is 90 degrees, and the radius2 of the second-order arc structure of the antenna is 1mm , the angle between each second-order arc and the adjacent arc is 90 degrees;

[0023] ③ The balun feeding structure of the antenna is composed of two small triangles and a microstrip. The width tri_width of each small triangle is 4 mm, the length tri_length of the triangle is 4.5mm, and the microstrip transmission input / output width gap of the antenna is 1.56 mm, the microstrip transmission input / output length length is 4mm;

[...

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Abstract

A dipole patch antenna based on a ternary tree arc-shaped fractal structure is composed of a front surface and a back surface. The front surface comprises a first antenna oscillator which is composed of a ternary tree one-order arc-shaped structure, a two-order arc-shaped structure, and an antenna linear structure. The front surface further comprises an impedance matching part, a microstrip transmission input line, a Balun feeding structure and the like. The back surface of the antenna is provided with a second antenna oscillator in complete axial symmetry with the structure of the first antenna oscillator. The back surface further comprises an impedance matching part, a microstrip transmission output line, etc. According to the dipole patch antenna, a microstrip Balun feeding manner is utilized, and a two-order fractal dipole patch antenna is designed by means of the ternary tree and arc-shaped structures. Self similarity and spatial filling performance of the fractal structure are utilized so that smaller dimension is realized under a precondition that technological indexes such as antenna gain, directional diagram input impedance and radiation uniformity are satisfied, and a requirement for small size of the antenna is satisfied. The antenna structure has advantages of easy realization, stable performance and relatively wide application prospect in an RFID field.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to the efficiency of information transmission and reception in the field of communication, and the optimization of antenna design parameters. Background technique [0002] The continuous development of wireless communication technology has made communication more and more widely used. At the same time, many communication systems operating in different frequency bands use different transceiver antennas, so the requirements for antenna miniaturization are getting higher and higher. Through the study of fractal antennas, it is found that fractal antennas have the characteristics of small size, easy processing, low cost, etc., and can meet the needs of wireless communication. Using the space-filling property of the antenna fractal structure to design the antenna can make it possible to reduce the size of the antenna. Therefore, fractal antennas have great development potential and v...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q9/26
CPCH01Q1/38H01Q1/50H01Q9/26
Inventor 张小红南晓晓卢忠亮
Owner JIANGXI UNIV OF SCI & TECH
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