【摘要】：毫米波的波長介于微波和光波之間,在雷達(dá)、衛(wèi)星通訊、科學(xué)研究等眾多領(lǐng)域均有廣泛的應(yīng)用前景,毫米波器件的研究已經(jīng)成為了一個(gè)十分迫切的課題。其中,作為毫米波通信系統(tǒng)重要組成部件的多工器,其相關(guān)研究具有重要意義。隨著工作頻段往毫米波頻段發(fā)展,由于器件尺寸與工作頻率的共度效應(yīng),多工器的尺寸變得很小,使用傳統(tǒng)的機(jī)械加工方法無法獲得與低頻段相同的表面光潔度。同時(shí)由于工作頻率的升高,高頻損耗增大,從而使多工器的插損大大增加。為了解決多工器在毫米波段工作時(shí)遇到的這些問題,使用矩形波導(dǎo)腔代替低頻段采用的同軸腔結(jié)構(gòu)。為了使多工器的插損盡量減小,采用集中管式多工器。衛(wèi)星微波通信技術(shù)和無線移動(dòng)通信技術(shù)的快速發(fā)展,使得微波通信頻段變得異常擁擠。為了充分利用有限的頻譜資源,鄰接信道多工器被用于信道化設(shè)計(jì)。就集總管式多工器而言,鄰接信道之間的相互影響很大,使得設(shè)計(jì)難度大大增加。為了減小信道之間的相互影響,采用單終端濾波器原型來設(shè)計(jì)信道濾波器。論文主要針對快速設(shè)計(jì)毫米波波導(dǎo)多工器和鄰接信道波導(dǎo)多工器的方法進(jìn)行研究。首先,根據(jù)信道鄰接與否,選定單終端或雙終端濾波器原型,并建立其集中參數(shù)電路模型并優(yōu)化;然后,根據(jù)電路模型元件值建立三維模型并優(yōu)化;最后,考慮溫漂和公差的影響,作適當(dāng)?shù)念A(yù)偏。由于參數(shù)眾多,多工器的優(yōu)化工作十分復(fù)雜。為了解決這一難題,通常采用模式匹配算法。這種算法具有速度快、精度高等優(yōu)點(diǎn)。論文中的波導(dǎo)多工器是在基于模式匹配算法的電磁仿真軟件中設(shè)計(jì)的。論文設(shè)計(jì)了Ka波段的集總管式四工器和V波段的雙工器以及X波段的鄰接信道波導(dǎo)八工器。
[Abstract]:The wavelength of millimeter wave lies between microwave and light wave. It has a wide application prospect in many fields such as radar, satellite communication, scientific research and so on. The research of millimeter wave device has become a very urgent subject. Among them, as an important component of millimeter wave communication system, its related research is of great significance. With the development of the working frequency band to the millimeter wave band, the size of the multiplexer becomes very small because of the effect of the device size and the working frequency, and the same surface finish as the low frequency band can not be obtained by using the traditional machining method. At the same time, the insertion loss of the multiplexer is greatly increased because of the increase of the operating frequency and the increase of the high frequency loss. In order to solve these problems in millimeter band multiplexer, rectangular waveguide cavity is used to replace the coaxial cavity structure in low frequency band. In order to minimize the insertion loss of the multiplexer, a centralized tube multiplexer is adopted. With the rapid development of satellite microwave communication technology and wireless mobile communication technology, the frequency band of microwave communication becomes extremely crowded. In order to make full use of limited spectrum resources, adjacent channel multiplexers are used in channelization design. For lumped-tube multiplexer, the interaction between adjacent channels is very strong, which makes the design more difficult. In order to reduce the interaction between channels, a single terminal filter prototype is used to design the channel filter. In this paper, the methods of fast design of millimeter wave waveguide multiplexer and adjacent channel waveguide multiplexer are studied. First of all, according to whether the channel is adjacent or not, the prototype of single-terminal or dual-terminal filter is selected, and its lumped parameter circuit model is established and optimized. Then, the three-dimensional model is established and optimized according to the component value of the circuit model. Take into account the effects of temperature drift and tolerance and make appropriate prebias. Because of many parameters, the optimization of multiplexer is very complicated. In order to solve this problem, pattern matching algorithm is usually used. This algorithm has the advantages of high speed and high precision. The waveguide multiplexer in this paper is designed in electromagnetic simulation software based on pattern matching algorithm. In this paper, the lumped tube quadruplexer, the V band duplex and the X band adjacent channel waveguide octet in Ka band are designed.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN928

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本文編號：2220297