移动通信中平面双工器的小型化研究

发布时间：2018-02-23 17:12

本文关键词： 枝节加载双模谐振器共用谐振器双工器高温超导阶梯阻抗谐振器　出处：《华东交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：移动通信是当今中国发展最快的产业之一。微波射频电路是智能终端的主要组成部分，它是连接终端与传播媒介的重要桥梁。作为移动通信系统射频前端举足轻重的元件之一，双工器起着滤波和分离信号的作用，它的性能的好坏直接影响到整个通信系统的性能。因此，对双工器进行全面深入的研究具有极其重大的意义。本文对双工器的小型化进行了深入的研究，具体的研究内容包括以下几个部分：首先，研究了基于枝节加载双模谐振器的双工器，利用枝节加载双模谐振器自身产生的传输零点来改善双工器的隔离度。双工器的两个通道滤波器分别由两个枝节加载双模谐振器组成。然后利用输入和输出端的源负耦合在阻带产生的传输零点来进一步改善双工器的隔离度。最后利用电磁仿真软件进行理论验证，设计了一款应用4G无线通信系统的双工器。其次，研究了新型的基于枝节加载谐振器的双工器。利用一个共用枝节加载双模谐振器产生的一个谐振模式与另外两个枝节加载双模谐振器产生的两个模式耦合分别构成双工器的一个发射通带或者接收通带。此外利用枝节加载双模谐振器自身产生的传输零点来改善双工器的隔离度。最后设计了一款运用于UMTS/WCDMA系统的微带双工器来验证设计理论的正确性。然后，研究了新型的基于双谐振螺旋谐振器和单谐振螺旋谐振器的高温超导双工器。单谐振螺旋谐振器被独立的用于设计两个通道滤波器，双谐振螺旋谐振器用作两个通道滤波器的共用谐振器。双谐振螺旋谐振器是改进后的枝节加载谐振器，它产生两个谐振器频率用于设计双工器的两个通道。由于双谐振螺旋谐振器和单谐振螺旋谐振器是相异的谐振器，它们不同的谐波频率形成了宽阻带的效果。此外谐振器按照新型的耦合结构进行连接使双工器取得了更加紧凑的尺寸。最后根据上述的方法，设计了一款工作在1.8/2.4GHz频段的高温超导双工器。最后，研究了具有新型耦合结构的基于阶梯阻抗谐振器的双工器。两个阶梯阻抗谐振器用作两个通道滤波器的共用谐振器，该共用谐振器分别与两个相同的阶梯阻抗谐振器耦合形成双工器的两个通道滤波器。利用两个阶梯阻抗谐振谐振器代替传统的阻抗匹配网络使双工器获得了紧凑电路尺寸。最后设计了一款工作在1.89/2.35GH频段应用4G无线通信系统的双工器。
[Abstract]:Mobile communication is one of the fastest-growing industries in China today. Microwave RF circuit is the main component of intelligent terminal, and it is an important bridge between terminal and media. As one of the most important components of RF front end of mobile communication system, microwave RF circuit is one of the most important components in the RF front end of mobile communication system. Duplexer acts as a filter and separation signal, and its performance directly affects the performance of the whole communication system. In this paper, the miniaturization of duplex is deeply studied, and the specific research content includes the following parts:. Firstly, the double-mode resonator based on branch loading is studied. The isolation of the duplex is improved by using the branch loading dual mode resonator with its own transmission 00:00. The two channel filters of the duplex are composed of two branch loaded dual mode resonators respectively. Then the input and output end of the double mode resonator is used to improve the isolation degree of the duplex resonator. The transmission of source and negative coupling in the stopband is 00:00 to further improve the isolation of the duplex. Finally, the electromagnetic simulation software is used to verify the theory. A duplex for 4G wireless communication system is designed. Secondly, A new type of duplex based on branch loaded resonator is studied. A resonant mode generated by a common branch loaded double mode resonator is constructed separately from two modes generated by the other two branch loaded double mode resonators. A transmission pass band or receiving pass band of a duplex. In addition, the isolation of the duplex is improved by using the branch loading dual mode resonator at 00:00. Finally, a microstrip duplex used in UMTS/WCDMA system is designed. To verify the correctness of the design theory. Then, a novel high temperature superconducting duplex based on double resonant spiral resonator and single resonant spiral resonator is studied. The single resonant spiral resonator is independently used to design two channel filters. A double resonant spiral resonator is used as a common resonator for two channel filters. A double resonant spiral resonator is an improved branch loaded resonator. It generates two resonator frequencies for the design of two channels of duplex. Because the double resonant spiral resonator and the single resonant spiral resonator are different resonators, Their different harmonic frequencies result in a wide stopband effect. In addition, the resonator is connected according to a new coupling structure to achieve a more compact size. Finally, according to the above method, A high temperature superconducting duplex working at 1.8 / 2.4 GHz is designed. Finally, a new type of coupled-structure duplex based on step impedance resonator is studied. Two step impedance resonators are used as common resonators for two channel filters. The common resonator is coupled with two identical step impedance resonators to form two channel filters of the duplex respectively. Instead of the traditional impedance matching network, two step impedance resonant resonators are used to make the duplex compact. Circuit size. Finally, a duplex working in 1.89 / 2.35 GH band using 4G wireless communication system is designed.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN929.5;TN631.2

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