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Design and Analysis of Mobile Base Station Antenna

Author: ZhaoQiang
Tutor: LiuYing; LiChangYuan
School: Xi'an University of Electronic Science and Technology
Course: Electronics and Communication Engineering
Keywords: Broadband antenna Base station antenna Microstrip antenna
CLC: TN828.6
Type: Master's thesis
Year: 2013
Downloads: 35
Quote: 0
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Abstract


With the rapidly development of the mobile communication, the demand for thedesign of the base station antenna unit becomes much higher as the requirement for thestation is more and more strict. In this paper, a broadband base station antenna unit isstudied and designed.A2.4GHz Omnidirectional Planar Microstrip Antenna is proposed, which iscomposed of seven radiating elements. By changing the feeding way of the antenna,we decrease the influence of the feeding coaxial line to the radiation of antenna.Finally we fabricate a prototype to do the measurements, the result shows that theantenna has a good impedance matching and a very omnidirectional pattern.Next, the broadband base station antenna unit is studied. Base on the traditionalDie-casting dipole element, metal posts are introduced to improve cross polarizationratio of antenna, and directing pieces are added on the top of the antenna to broadenthe bandwidth of the antenna. The antenna unit is simulated and optimized with HFSS,and the effect of several critical structural parameters on the performance of theantenna is discussed. At last, the frequency domain parameters of the antenna aremeasured with vector network analyzer.Finally, four types of reflectors for the broadband base station antenna are studied.Discussing their impact on the horizontal beam width of the antenna, the best one isselected for further simulation and optimization. Ultimately, the model is fabricatedand measured. Measured results are highly consistent with simulated ones.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > Antenna: zoning > Mobile communications antenna
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