宽带全向移动通信天线的设计与分析

发布时间：2018-02-26 06:04

本文关键词： 宽带天线全向天线低剖面天线双极化天线移动通信天线单极子天线　出处：《哈尔滨工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：伴随着移动通信技术的不断发展,各种通信设备不断增多,人们对天线的需求也不断增高。为了减少整个通信系统的复杂度,缩小通信设备的体积与重量,提高设备的便携性,常常需要一个天线同时满足多个通信设备的工作,这就要求天线具有比较宽的工作带宽,以覆盖各个通信设备的工作频带。除了带宽要求外,在一些通信系统中,还需要天线具有低剖面、小型化等特性,以满足安装环境的要求。针对目前市场上对宽带、低剖面、高增益、全向天线的需求,本文主要完成了以下研究工作:(1)设计了一种宽带低剖面垂直极化全向天线,该天线在1710 MHz-2690 MHz频带内VSWR小于2.0,增益大于4 d B,不圆度小于1 d B,极化方向尺寸小于20 mm;(2)设计了一种宽带低剖面水平极化全向天线,该天线在1710 MHz-2690 MHz频带内VSWR小于2.0,增益大于1 d B,不圆度小于3 d B,天线剖面高度尺寸小于2 mm;(3)设计了一种宽带低剖面双极化全向天线,该天线在1710 MHz-2690 MHz频带内,垂直极化和水平极化端口VSWR都小于2.0,垂直极化增益大于4 d B,水平极化增益大于2 d B,垂直极化和水平极化不圆度小于3 d B,两端口隔离度大于30 d B,整个天线的剖面纵向尺寸小于80 mm;(4)设计了一种宽带高增益双极化全向天线,该天线在1710MHz-2690 MHz频带内,垂直极化和水平极化端口VSWR小于2.0,垂直极化增益大于8 d B,水平极化增益大于7 d B,垂直极化和水平极化不圆度小于3 d B,两端口隔离度大于30 d B。上述天线均使用CST Microwave Studio?电磁仿真软件进行建模、仿真和优化,本文还对天线进行实物加工和测试,测试结果表明,以上几种天线的实验结果和仿真结果吻合得很好,都能够满足指标要求。此外,本论文还对所设计天线进行了理论分析,详细描述了天线的工作原理以及设计方法。本文所设计的天线具有宽带、低剖面、高增益和全向等特点,能够广泛应用于移动通信设备中。
[Abstract]:With the continuous development of mobile communication technology, various communication devices are increasing, and the demand for antenna is also increasing. In order to reduce the complexity of the whole communication system, reduce the volume and weight of the communication equipment, improve the portability of the equipment. One antenna is often required to work with multiple communication devices at the same time, which requires the antenna to have a wide working bandwidth to cover the operating bands of each communication device. In addition to bandwidth requirements, in some communication systems, The antenna also needs to have low profile, miniaturization and other characteristics to meet the requirements of the installation environment. In view of the current market demand for broadband, low profile, high gain, omnidirectional antenna, In this paper, the following research work has been done: (1) A wide band low profile vertical polarization omnidirectional antenna is designed. A wide band low profile horizontal polarization omnidirectional antenna is designed in the 1710 MHz-2690 MHz band with VSWR less than 2.0, gain greater than 4 dB, non-roundness less than 1 dB, and polarization direction size less than 20 mm / 2. In the 1710 MHz-2690 MHz band, the VSWR is less than 2.0, the gain is greater than 1 dB, the non-roundness is less than 3 dB, and the height of the antenna section is less than 2 mm-1 / 3) A wide band low profile dual-polarization omnidirectional antenna is designed. The antenna is in the 1710 MHz-2690 MHz band. The vertical polarization and horizontal polarization VSWR are less than 2.0, the vertical polarization gain is more than 4 dB, the horizontal polarization gain is more than 2 dB, the vertical and horizontal polarization is less than 3 dB, the isolation of two ports is more than 30 dB. A wide band and high gain dual polarization omnidirectional antenna is designed. The antenna is in the 1710MHz-2690 MHz band. The vertical and horizontal polarization port VSWR is less than 2.0, the vertical polarization gain is more than 8 dB, the horizontal polarization gain is more than 7 dB, the vertical polarization and horizontal polarization is less than 3 dB, the isolation of two ports is more than 30 dB. The electromagnetic simulation software is used to model, simulate and optimize the antenna. The test results show that the experimental results are in good agreement with the simulation results and can meet the requirements. In this paper, the antenna is analyzed in theory, and its working principle and design method are described in detail. The antenna designed in this paper has the characteristics of wide band, low profile, high gain and omnidirectional. It can be widely used in mobile communication equipment.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN828.6

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