本文關鍵詞： 枝節(jié)加載 雙模諧振器 共用諧振器 雙工器 高溫超導 階梯阻抗諧振器　出處：《華東交通大學》2015年碩士論文　論文類型：學位論文

【摘要】：移動通信是當今中國發(fā)展最快的產業(yè)之一。微波射頻電路是智能終端的主要組成部分，它是連接終端與傳播媒介的重要橋梁。作為移動通信系統射頻前端舉足輕重的元件之一，雙工器起著濾波和分離信號的作用，它的性能的好壞直接影響到整個通信系統的性能。因此，對雙工器進行全面深入的研究具有極其重大的意義。本文對雙工器的小型化進行了深入的研究，具體的研究內容包括以下幾個部分： 首先，研究了基于枝節(jié)加載雙模諧振器的雙工器，利用枝節(jié)加載雙模諧振器自身產生的傳輸零點來改善雙工器的隔離度。雙工器的兩個通道濾波器分別由兩個枝節(jié)加載雙模諧振器組成。然后利用輸入和輸出端的源負耦合在阻帶產生的傳輸零點來進一步改善雙工器的隔離度。最后利用電磁仿真軟件進行理論驗證，設計了一款應用4G無線通信系統的雙工器。 其次，研究了新型的基于枝節(jié)加載諧振器的雙工器。利用一個共用枝節(jié)加載雙模諧振器產生的一個諧振模式與另外兩個枝節(jié)加載雙模諧振器產生的兩個模式耦合分別構成雙工器的一個發(fā)射通帶或者接收通帶。此外利用枝節(jié)加載雙模諧振器自身產生的傳輸零點來改善雙工器的隔離度。最后設計了一款運用于UMTS/WCDMA系統的微帶雙工器來驗證設計理論的正確性。 然后，研究了新型的基于雙諧振螺旋諧振器和單諧振螺旋諧振器的高溫超導雙工器。單諧振螺旋諧振器被獨立的用于設計兩個通道濾波器，雙諧振螺旋諧振器用作兩個通道濾波器的共用諧振器。雙諧振螺旋諧振器是改進后的枝節(jié)加載諧振器，它產生兩個諧振器頻率用于設計雙工器的兩個通道。由于雙諧振螺旋諧振器和單諧振螺旋諧振器是相異的諧振器，它們不同的諧波頻率形成了寬阻帶的效果。此外諧振器按照新型的耦合結構進行連接使雙工器取得了更加緊湊的尺寸。最后根據上述的方法，設計了一款工作在1.8/2.4GHz頻段的高溫超導雙工器。 最后，研究了具有新型耦合結構的基于階梯阻抗諧振器的雙工器。兩個階梯阻抗諧振器用作兩個通道濾波器的共用諧振器，該共用諧振器分別與兩個相同的階梯阻抗諧振器耦合形成雙工器的兩個通道濾波器。利用兩個階梯阻抗諧振諧振器代替?zhèn)鹘y的阻抗匹配網絡使雙工器獲得了緊湊電路尺寸。最后設計了一款工作在1.89/2.35GH頻段應用4G無線通信系統的雙工器。
[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.
【學位授予單位】：華東交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN929.5;TN631.2

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相關博士學位論文 前1條

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本文編號：1526924