介质谐振器天线及其圆极化的研究
发布时间：2018-10-18 20:41
【摘要】：随着无线通信技术的高速发展,传统天线如微带天线等,因为存在高频金属欧姆损耗比较高、低频天线物理尺寸比较大的缺点,所以目前已经无法满足工程应用中对天线的小尺寸、宽频带、低损耗的实际迫切需求。为了解决传统天线所面临的技术瓶颈,满足日益增长的天线性能要求,本文研究了一种新型的天线——介质谐振器天线。目前,介质谐振器天线要面对复杂电磁情况、高带宽通信需求,远距离传输衰弱等实际需求,所以介质谐振器天线主要朝着圆极化、宽频带、高增益三个方向发展,本文对介质谐振器天线从这三个方面的分别进行了分析、研究和设计。本文主要工作如下:1、对介质谐振器天线的相关理论进行了分析,如介质谐振器天线和圆极化介质谐振器天线的原理、经典馈电方式——孔径耦合馈电的原理、介质块谐振频率和馈电微带线参数估算方法、陶瓷材料加工方法。2、研究并加工了一种特殊馈电结构的耦合槽耦合的圆极化矩形介质谐振器天线,测试的结果表明,-10dB阻抗带宽为48MHz,频带为2.554GHz~2.623GHz,中心频率为2.582GHz。3dB轴比带宽为25MHz,频带为2.574GHz~2.599GHz,中心频率2.586GHz,增益为4.3dBi。3、研究了一种改进型孔径耦合馈电的宽带高增益介质谐振器天线,仿真的结果表明,带宽覆盖3.6575GHz~4.9455GHz,带宽为1459MHz,相对带宽为34.2%,最高增益达到了10.2dBi。4、研究了一种加贴小型寄生金属条的高增益立方体介质谐振器天线,仿真的结果表明,-10dB的阻抗带宽为534MHz,频带为2.058GHz~2.592GHz,相对带宽为21.8%,增益为7.3dBi。本文所完成的圆极化矩形介质谐振器天线、宽带高增益介质谐振器天线、高增益立方体介质谐振器天线,经过仿真或测试,均达到了很好的性能和指标。
[Abstract]:With the rapid development of wireless communication technology, traditional antennas, such as microstrip antennas, have the disadvantages of high frequency metal ohmic loss and large physical size of low frequency antennas. So it can not meet the urgent need of small size, wide band and low loss in engineering applications. In order to solve the technical bottleneck of traditional antenna and meet the increasing performance requirements of antenna, a new type of antenna, dielectric resonator antenna, is studied in this paper. At present, dielectric resonator antennas have to face complex electromagnetic conditions, high bandwidth communication requirements, long distance transmission weakness and other practical needs. Therefore, dielectric resonator antennas are mainly developed in three directions: circular polarization, wide band, and high gain. In this paper, the three aspects of dielectric resonator antenna are analyzed, studied and designed. The main work of this paper is as follows: 1. The related theories of dielectric resonator antenna are analyzed, such as the principle of dielectric resonator antenna and circularly polarized dielectric resonator antenna, the principle of classical feed mode-aperture coupling feed, Methods for estimating resonant frequency of dielectric blocks and parameters of feed microstrip lines, machining methods for ceramic materials. 2. A circularly polarized rectangular dielectric resonator antenna coupled with coupling grooves with special feed structure is studied and fabricated. The test results show that the impedance bandwidth of-10dB is 48MHz, the bandwidth is 2.554GHz, the frequency band is 2.623GHz, the central frequency is 25MHz, the center frequency is 2.574GHz, the central frequency is 2.586GHz, and the gain is 4.3dBi.3.A broadband high gain dielectric resonator antenna with an improved aperture coupling feed is studied. The simulation results show that the bandwidth covers 3.6575GHz, the bandwidth is 1459MHz, the relative bandwidth is 34.2and the maximum gain is 10.2dBi.4.A high-gain cubic dielectric resonator antenna with small parasitic metal strips is studied. The simulation results show that the impedance bandwidth of-10dB is 534 MHz, the bandwidth is 2.058 GHz, the relative bandwidth is 21.8, and the gain is 7.3 dBi. The circularly polarized rectangular dielectric resonator antenna wideband high gain dielectric resonator antenna and high gain cube dielectric resonator antenna are simulated and tested.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN823
本文编号：2280312
[Abstract]:With the rapid development of wireless communication technology, traditional antennas, such as microstrip antennas, have the disadvantages of high frequency metal ohmic loss and large physical size of low frequency antennas. So it can not meet the urgent need of small size, wide band and low loss in engineering applications. In order to solve the technical bottleneck of traditional antenna and meet the increasing performance requirements of antenna, a new type of antenna, dielectric resonator antenna, is studied in this paper. At present, dielectric resonator antennas have to face complex electromagnetic conditions, high bandwidth communication requirements, long distance transmission weakness and other practical needs. Therefore, dielectric resonator antennas are mainly developed in three directions: circular polarization, wide band, and high gain. In this paper, the three aspects of dielectric resonator antenna are analyzed, studied and designed. The main work of this paper is as follows: 1. The related theories of dielectric resonator antenna are analyzed, such as the principle of dielectric resonator antenna and circularly polarized dielectric resonator antenna, the principle of classical feed mode-aperture coupling feed, Methods for estimating resonant frequency of dielectric blocks and parameters of feed microstrip lines, machining methods for ceramic materials. 2. A circularly polarized rectangular dielectric resonator antenna coupled with coupling grooves with special feed structure is studied and fabricated. The test results show that the impedance bandwidth of-10dB is 48MHz, the bandwidth is 2.554GHz, the frequency band is 2.623GHz, the central frequency is 25MHz, the center frequency is 2.574GHz, the central frequency is 2.586GHz, and the gain is 4.3dBi.3.A broadband high gain dielectric resonator antenna with an improved aperture coupling feed is studied. The simulation results show that the bandwidth covers 3.6575GHz, the bandwidth is 1459MHz, the relative bandwidth is 34.2and the maximum gain is 10.2dBi.4.A high-gain cubic dielectric resonator antenna with small parasitic metal strips is studied. The simulation results show that the impedance bandwidth of-10dB is 534 MHz, the bandwidth is 2.058 GHz, the relative bandwidth is 21.8, and the gain is 7.3 dBi. The circularly polarized rectangular dielectric resonator antenna wideband high gain dielectric resonator antenna and high gain cube dielectric resonator antenna are simulated and tested.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN823
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