一體化多通道變頻器的研究與設計
發(fā)布時間：2019-04-20 11:51
【摘要】：微波變頻器廣泛應用于微波通信、雷達系統(tǒng)、遙測遙感、導航系統(tǒng)、偵察和電子對抗等領域,是現(xiàn)在通信系統(tǒng)的核心部分。由于衛(wèi)星通信的快速發(fā)展,射頻前端電路的集成度越來越高,功能也越來越多,單一模塊的變頻器已經(jīng)不能滿足通信行業(yè)發(fā)展的需要,有時一個系統(tǒng)需要多路變頻通道才能滿足需求,隨著設備小型化和集成化的發(fā)展,這就需要將多個變頻通道集成在一個機箱內(nèi),因此一體化多通道變頻器是個非常值得研究的課題。本文主要是對一體化多通道變頻器進行研究,為微波通信提供一個具有通用性、實用性和高可靠性的微波變頻設備。該變頻器共用一個機箱,一個電源,一個時鐘模塊和一個主控模塊;并且每個變頻模塊相互獨立、互不影響可以單獨工作和關閉,變頻模塊也支持盲拔插,可以隨時取出或更換,因此大大減小了設備的體積,節(jié)約了成本,也方便了用戶的使用和日后的維護。論文主要開展了以下研究工作:1.本文首先介紹了微波變頻器的發(fā)展狀況;又介紹了微波變頻器的主要的技術指標、鎖相環(huán)的基本理論、設計鎖相頻率合成器的常用方法以及微波變頻器的常用結構并分析了每種結構的優(yōu)缺點。2.根據(jù)技術要求,對多通道變頻器進行設計,主要包括以下幾個方面:系統(tǒng)組成框圖和原理,系統(tǒng)結構設計,S頻段下變頻模塊設計,時鐘單元設計,電源模塊設計,控制單元設計以及系統(tǒng)的可靠性和可維護性設計。其中主要講述了S頻段下變頻模塊的設計,根據(jù)技術要求,經(jīng)過分析,S頻段下變頻模塊采用超外差式下變頻結構;根據(jù)選用的下變頻結構和主要的技術指標要求,確定了變頻通道的設計方案、本振的設計方案和自檢功能的設計方案,并進行了電路仿真和優(yōu)化。3.本文也著重介紹了關鍵器件的選擇,并對器件的性能進行了分析。最后對設計完成的設備進行測試并記錄測試結果,將測試結果和標準要求的技術指標進行對比和分析,經(jīng)過對比,最終的測試結果滿足設計指標要求。
[Abstract]:Microwave inverter is widely used in microwave communication, radar system, telemetry and remote sensing, navigation system, reconnaissance and electronic countermeasure, etc. It is the core part of the current communication system. Due to the rapid development of satellite communication, the integration of RF front-end circuits is getting higher and higher, and the functions of RF front-end circuits are more and more. The frequency converter of single module can not meet the needs of the development of communication industry. Sometimes a system needs multi-channel frequency conversion channels to meet the requirements. With the development of miniaturization and integration of equipment, it is necessary to integrate multiple frequency conversion channels into one chassis. Therefore, the integration of multi-channel inverter is a very worthy subject to be studied. In this paper, the integrated multi-channel inverter is studied to provide a universal, practical and reliable microwave frequency conversion equipment for microwave communication. The frequency converter share a chassis, a power supply, a clock module and a master control module; And each frequency conversion module is independent of each other, and can work and close separately without affecting. The frequency conversion module also supports blind plug-in and can be removed or replaced at any time, thus greatly reducing the volume of the equipment and saving the cost. It also facilitates the user's use and future maintenance. This paper mainly carried out the following research work: 1. Firstly, this paper introduces the development of microwave frequency converter. The main technical indexes of microwave frequency converter, the basic theory of phase locked loop, the common methods of designing phase locked frequency synthesizer and the common structure of microwave frequency converter are also introduced, and the advantages and disadvantages of each structure are analyzed. According to the technical requirements, the multi-channel inverter is designed, which mainly includes the following aspects: system composition block diagram and principle, system structure design, S-band down-conversion module design, clock unit design, power module design, and so on. Control unit design and system reliability and maintainability design. The design of S-band down-conversion module is mainly described. According to the technical requirements, the S-band down-conversion module adopts super-heterodyne down-conversion structure. According to the selected down conversion structure and the main technical requirements, the design scheme of the frequency conversion channel, the design scheme of the local vibration and the design scheme of the self test function are determined, and the circuit simulation and optimization are carried out. 3. This paper also focuses on the selection of key devices, and analyzes the performance of the devices. Finally, the designed equipment is tested and the test results are recorded. The test results are compared and analyzed with the technical indexes required by the standard. Through the comparison, the final test results meet the requirements of the design indicators.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN773
本文編號：2461586
[Abstract]:Microwave inverter is widely used in microwave communication, radar system, telemetry and remote sensing, navigation system, reconnaissance and electronic countermeasure, etc. It is the core part of the current communication system. Due to the rapid development of satellite communication, the integration of RF front-end circuits is getting higher and higher, and the functions of RF front-end circuits are more and more. The frequency converter of single module can not meet the needs of the development of communication industry. Sometimes a system needs multi-channel frequency conversion channels to meet the requirements. With the development of miniaturization and integration of equipment, it is necessary to integrate multiple frequency conversion channels into one chassis. Therefore, the integration of multi-channel inverter is a very worthy subject to be studied. In this paper, the integrated multi-channel inverter is studied to provide a universal, practical and reliable microwave frequency conversion equipment for microwave communication. The frequency converter share a chassis, a power supply, a clock module and a master control module; And each frequency conversion module is independent of each other, and can work and close separately without affecting. The frequency conversion module also supports blind plug-in and can be removed or replaced at any time, thus greatly reducing the volume of the equipment and saving the cost. It also facilitates the user's use and future maintenance. This paper mainly carried out the following research work: 1. Firstly, this paper introduces the development of microwave frequency converter. The main technical indexes of microwave frequency converter, the basic theory of phase locked loop, the common methods of designing phase locked frequency synthesizer and the common structure of microwave frequency converter are also introduced, and the advantages and disadvantages of each structure are analyzed. According to the technical requirements, the multi-channel inverter is designed, which mainly includes the following aspects: system composition block diagram and principle, system structure design, S-band down-conversion module design, clock unit design, power module design, and so on. Control unit design and system reliability and maintainability design. The design of S-band down-conversion module is mainly described. According to the technical requirements, the S-band down-conversion module adopts super-heterodyne down-conversion structure. According to the selected down conversion structure and the main technical requirements, the design scheme of the frequency conversion channel, the design scheme of the local vibration and the design scheme of the self test function are determined, and the circuit simulation and optimization are carried out. 3. This paper also focuses on the selection of key devices, and analyzes the performance of the devices. Finally, the designed equipment is tested and the test results are recorded. The test results are compared and analyzed with the technical indexes required by the standard. Through the comparison, the final test results meet the requirements of the design indicators.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN773
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