左手材料在射频微波器件中的应用
发布时间：2018-07-23 09:35
【摘要】：左手材料是一种介电常数和磁导率同时为负的周期超材料。由于它独特的双负特性在射频微波器件中可以明显的提高器件性能,成为当前国际物理学界和电磁学领域的前言研究热点之一。本文首先提出了一种基于谐振环应用到60GHz通信的左手材料,然后用NRW的S参数反演法验证所提出的左手材料结构的左手特性。随后基于复合左右手传输线原理提出了基于复合左右手传输线的小尺寸U波段滤波器。此滤波器的尺寸大小为1.428mm*0.5530mm,3dB带宽为从48.5GHz到59.3GHz,频带内回波损耗较低,插入损耗相对平缓,群时延比较平坦。最后,基于零阶谐振器原理,本文又提出一种工作在2.45GHz的微波振荡器,此振荡器的输出振荡波形稳定,并且具有较小的相位噪声,一次谐波频率即振荡频率2.45GHz,功率达到了7.87dBm,二次谐波在4.9GHz,二次谐波功率为-15.68dBm,说明此振荡器具有较好的谐波抑制性和高输出功率。从仿真结果来看,与传统材料相比,左手材料具有尺寸小、损耗低、容易制作、成本低、宽频带等优点,这预示着左手材料在现代雷达和无线通信系统具有广泛的应用前景。
[Abstract]:Left-handed material is a periodic supermaterial with both negative permittivity and permeability. Because of its unique double negative characteristics it can obviously improve the performance of RF microwave devices and has become one of the hot topics in the field of international physics and electromagnetics. In this paper, we first propose a left-handed material based on resonant ring applied to 60GHz communication, and then verify the left-handed characteristics of the proposed left-handed material structure by using the S-parameter inversion method of NRW. Then, based on the principle of compound left-right hand transmission line, a small size U-band filter based on compound left-right hand transmission line is proposed. The size of the filter is 1.428mm / 0.5530mmU ~ 3dB bandwidth from 48.5 GHz to 59.3GHz, the return loss is low, the insertion loss is relatively flat, and the group delay is relatively flat. Finally, based on the principle of zero order resonator, a microwave oscillator working at 2.45 GHz is proposed. The output waveform of the oscillator is stable and the phase noise is small. The first harmonic frequency is 2.45 GHz, the power is 7.87 dBm, the second harmonic is 4.9 GHz and the second harmonic power is -15.68 dBm. it shows that the oscillator has good harmonic suppression and high output power. From the simulation results, compared with the traditional materials, the left-handed materials have the advantages of small size, low loss, easy manufacture, low cost, wide frequency band and so on. This indicates that the left-handed materials have a broad application prospect in modern radar and wireless communication systems.
【学位授予单位】：江西师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB33;TN61
本文编号：2138975
[Abstract]:Left-handed material is a periodic supermaterial with both negative permittivity and permeability. Because of its unique double negative characteristics it can obviously improve the performance of RF microwave devices and has become one of the hot topics in the field of international physics and electromagnetics. In this paper, we first propose a left-handed material based on resonant ring applied to 60GHz communication, and then verify the left-handed characteristics of the proposed left-handed material structure by using the S-parameter inversion method of NRW. Then, based on the principle of compound left-right hand transmission line, a small size U-band filter based on compound left-right hand transmission line is proposed. The size of the filter is 1.428mm / 0.5530mmU ~ 3dB bandwidth from 48.5 GHz to 59.3GHz, the return loss is low, the insertion loss is relatively flat, and the group delay is relatively flat. Finally, based on the principle of zero order resonator, a microwave oscillator working at 2.45 GHz is proposed. The output waveform of the oscillator is stable and the phase noise is small. The first harmonic frequency is 2.45 GHz, the power is 7.87 dBm, the second harmonic is 4.9 GHz and the second harmonic power is -15.68 dBm. it shows that the oscillator has good harmonic suppression and high output power. From the simulation results, compared with the traditional materials, the left-handed materials have the advantages of small size, low loss, easy manufacture, low cost, wide frequency band and so on. This indicates that the left-handed materials have a broad application prospect in modern radar and wireless communication systems.
【学位授予单位】：江西师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB33;TN61
【参考文献】
相关期刊论文 前1条
1 杨一鸣;王甲富;屈绍波;柏鹏;李哲;夏颂;王军;徐卓;;基于高介电常数基板和金属结构负折射材料的设计,仿真与验证[J];物理学报;2011年05期
，本文编号：2138975
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2138975.html
