W波段平面化無源電路的設計
發(fā)布時間：2018-12-21 09:50
【摘要】：W波段收發(fā)組件是導引頭中的重要組成部分，在精確制導中起著重要的作用。目前課題組已經(jīng)設計實現(xiàn)的W波段收發(fā)組件中，無源電路都是以波導結構形式實現(xiàn)的，占用了較大的體積，使W波段系統(tǒng)應該具有的尺寸小的優(yōu)勢沒有能夠得到很好的體現(xiàn)。同時，波導結構不易于集成，也給系統(tǒng)的調(diào)試帶來了不便。因此對W波段收發(fā)組件中的無源電路做平面化、小型化研究是十分必要的。另外，導引頭對收發(fā)前端的重量、體積都有嚴格要求，采用平面化無源電路，可以大大減小組件的厚度、尺寸、重量，因此對無源電路進行平面化研究是十分有意義的。 本文用基片集成波導（SIW）結構來實現(xiàn)W波段耦合諧振腔體濾波器。通過對電壁、磁壁對稱性的分析，并結合建模仿真的方法提取耦合系數(shù)，實現(xiàn)耦合諧振腔帶通濾波器的優(yōu)化設計，并且通過負耦合結構，在上下邊帶都引入了傳輸零點，使濾波器具有更加陡峭的截止頻率，提高了濾波器的頻率選擇性。 用薄膜電路工藝來實現(xiàn)W波段微帶Wilkinson功分器。薄膜電路工藝能夠將薄膜電阻平面集成到電路中，，并且在毫米波頻段也具有良好的穩(wěn)定性，加工精度高。Wilkinson功分器結構簡單易于實現(xiàn)，較普通T型功分器有更好的端口隔離特性。本文用奇偶模法進行分析設計，并用薄膜電路工藝加以制作，來實現(xiàn)W波段的微帶Wilkinson功分器，得到良好的端口隔離度與輸出幅度相位一致性。
[Abstract]:W-band transceiver module is an important part of seeker and plays an important role in precision guidance. At present, in the W-band transceiver module which has been designed and implemented by the research group, the passive circuit is realized in the form of waveguide structure, which occupies a large volume, so the advantages of the small size of the W-band system can not be well reflected. At the same time, the waveguide structure is not easy to integrate, which brings inconvenience to the debugging of the system. Therefore, it is necessary to study the planar and miniaturization of passive circuits in W band transceiver modules. In addition, the seeker has strict requirements for the weight and volume of the transceiver front end. Using the plane passive circuit can greatly reduce the thickness, size and weight of the module, so it is very meaningful to study the flatness of the passive circuit. In this paper, W band coupled resonator filter is realized by substrate integrated waveguide (SIW) structure. By analyzing the symmetry of electric wall and magnetic wall, and combining with modeling and simulation, the coupling coefficient is extracted to realize the optimal design of bandpass filter for coupling resonator, and the transmission zeros are introduced into the upper and lower sideband by negative coupling structure. The filter has more steep cutoff frequency, and the frequency selectivity of filter is improved. W band microstrip Wilkinson power divider is realized by thin film circuit technology. The thin film circuit process can integrate the film resistance plane into the circuit, and it also has good stability in millimeter wave frequency band and high machining accuracy. The structure of Wilkinson power divider is simple and easy to realize. Compared with ordinary T type power divider, it has better port isolation characteristics. In this paper, the odd-even mode method is used to analyze and design, and the thin film circuit is used to fabricate the W band microstrip Wilkinson power divider. The good port isolation and output amplitude phase consistency are obtained.
【學位授予單位】：北京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN713
本文編號：2388746
[Abstract]:W-band transceiver module is an important part of seeker and plays an important role in precision guidance. At present, in the W-band transceiver module which has been designed and implemented by the research group, the passive circuit is realized in the form of waveguide structure, which occupies a large volume, so the advantages of the small size of the W-band system can not be well reflected. At the same time, the waveguide structure is not easy to integrate, which brings inconvenience to the debugging of the system. Therefore, it is necessary to study the planar and miniaturization of passive circuits in W band transceiver modules. In addition, the seeker has strict requirements for the weight and volume of the transceiver front end. Using the plane passive circuit can greatly reduce the thickness, size and weight of the module, so it is very meaningful to study the flatness of the passive circuit. In this paper, W band coupled resonator filter is realized by substrate integrated waveguide (SIW) structure. By analyzing the symmetry of electric wall and magnetic wall, and combining with modeling and simulation, the coupling coefficient is extracted to realize the optimal design of bandpass filter for coupling resonator, and the transmission zeros are introduced into the upper and lower sideband by negative coupling structure. The filter has more steep cutoff frequency, and the frequency selectivity of filter is improved. W band microstrip Wilkinson power divider is realized by thin film circuit technology. The thin film circuit process can integrate the film resistance plane into the circuit, and it also has good stability in millimeter wave frequency band and high machining accuracy. The structure of Wilkinson power divider is simple and easy to realize. Compared with ordinary T type power divider, it has better port isolation characteristics. In this paper, the odd-even mode method is used to analyze and design, and the thin film circuit is used to fabricate the W band microstrip Wilkinson power divider. The good port isolation and output amplitude phase consistency are obtained.
【學位授予單位】：北京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN713
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