A coplanar omnidirectional horizontally polarized fractal dipole antenna and its design method
A technology of dipole antenna and horizontal polarization, which is applied in the direction of antenna, antenna array, radiation element structure, etc., can solve the problem of less research and exploration of antenna, and achieve the effect of improving in-band impedance matching
Active Publication Date: 2018-05-29
佛山市盛夫通信设备有限公司
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However, so far, research on such antennas has been relatively little explored
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[0038] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.
[0039] Here, based on three iterations I 3 Sierpinski fractal curve (Sierpinski Curve) is used to design the coplanar omnidirectional horizontally polarized fractal dipole antenna, and the corresponding drawings are given to describe the present invention in detail. in, Figure 2(a)-Figure 2(f) is a schematic diagram of each iteration of the Sierpinski fractal curve (Sierpinski Curve); Figure 3(a)-Figure 3(c) for three iterations I 3 Schematic diagram of scaling, mirror symmetry and widening operations of Sierpinski Curve; Fig. Figure 4(a)-Figure 4(c) Schematic diagram of attaching a coplanar stripline balun, parasitic conductor and feeding gap for a coplanar omnidirectional horizontally polarized fractal dipole antenna; Figure 5(a)-Figure 5(c) A schematic diagram of a coplanar om...
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The present invention discloses a coplanar omnidirectional horizontally polarized fractal dipole antenna which is characterized in that the antennal comprises a dielectric substrate, an antenna oscillator and a feed coaxial line. The antenna oscillator is printed to the dielectric substrate by using printed circuit board process, three-iteration I3 Sierpinski fractal curve is used, after the zooming of different scales is carried out in horizontal and vertical directions, the horizontal mirror image replication is carried out to obtain two symmetric arms, a periodic fractal curve is formed, a coplanar stripe line Balun which is parallel to the symmetrical axis is arranged between two side mirror images, a pair of symmetrical parasitic bands are constructed at the left and right sides of the coplanar stripe line Balun, a feed gap is arranged the symmetrical axis, and the feed coaxial line is welded at the feed gap of the antenna oscillator. According to the antenna, the 1.5*lambda dipole coplanar omnidirectional horizontally polarized radiation, band good impedance matching, miniaturization and low cost are realized, 2.4GHz WLAN+ISM bands are covered, the gain reaches 2.2dBi to 2. 5dBi, the out-of-roundness is smaller than 5.6dB, and the efficiency eta A is larger than 62%.
Description
technical field [0001] The invention relates to short-distance wireless communication terminal antenna equipment and technology, in particular to a coplanar omnidirectional horizontally polarized fractal dipole antenna. Background technique [0002] With the continuous development of Internet and mobile communication technology, human beings have generally entered the information society. Information has become an indispensable basic need in people's daily life. As the driving force for the progress of human society, information technology will continue to develop in depth in the future, and eventually realize a high degree of information exchange between people, people and things, and things and things. Informatization, intelligence, networking, and the Internet of Things are booming, making short-distance high-speed wireless communication technologies such as Bluetooth (Bluetooth), wireless WiFi, wireless local area network (WLAN), WiMAX, and ultra-wideband communication ...
Claims
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IPC IPC(8): H01Q1/36H01Q1/38H01Q21/00
Inventor 李道铁
Owner 佛山市盛夫通信设备有限公司