【摘要】：左手材料是一種介電常數(shù)和磁導率同時為負的周期超材料。由于它獨特的雙負特性在射頻微波器件中可以明顯的提高器件性能,成為當前國際物理學界和電磁學領域的前言研究熱點之一。本文首先提出了一種基于諧振環(huán)應用到60GHz通信的左手材料,然后用NRW的S參數(shù)反演法驗證所提出的左手材料結構的左手特性。隨后基于復合左右手傳輸線原理提出了基于復合左右手傳輸線的小尺寸U波段濾波器。此濾波器的尺寸大小為1.428mm*0.5530mm,3dB帶寬為從48.5GHz到59.3GHz,頻帶內(nèi)回波損耗較低,插入損耗相對平緩,群時延比較平坦。最后,基于零階諧振器原理,本文又提出一種工作在2.45GHz的微波振蕩器,此振蕩器的輸出振蕩波形穩(wěn)定,并且具有較小的相位噪聲,一次諧波頻率即振蕩頻率2.45GHz,功率達到了7.87dBm,二次諧波在4.9GHz,二次諧波功率為-15.68dBm,說明此振蕩器具有較好的諧波抑制性和高輸出功率。從仿真結果來看,與傳統(tǒng)材料相比,左手材料具有尺寸小、損耗低、容易制作、成本低、寬頻帶等優(yōu)點,這預示著左手材料在現(xiàn)代雷達和無線通信系統(tǒng)具有廣泛的應用前景。
[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.
【學位授予單位】：江西師范大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB33;TN61

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相關期刊論文 前1條

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本文編號：2138975