小型化抗过载射频收发机技术研究

发布时间：2018-04-13 08:33

本文选题：收发机 + 微带滤波器　；参考：《电子科技大学》2017年硕士论文

【摘要】：当今社会,机载舰载雷达技术以及无线通信行业发展迅猛。无论是在通信系统还是雷达系统中,收发机都是其重要的组成部分。收发机性能的好坏将会直接影响到雷达系统的性能与无线通信系统的质量。因此,高性能的机载舰载雷达收发机成为新时代的一个研究热点。针对机载设备自身的特点,如体积小、重量轻、功耗小,且其在运动中需承受一定加速度的冲击等。本文设计了一款工作在C波段、集小型化与抗过载为一体的收发机。该系统主要包括接收通道、发射通道、微带滤波器以及供电板的设计,从各个方面实现其小型化与抗过载性能。本文的主要内容如下所示:1、原理介绍。对接收机与发射机的原理结构进行详细介绍,对无线通信中常用的各类收发机的优缺点进行比较,并给出滤波器的基本理论,包括分类以及重要指标。2、系统的给出了本文接收通道与发射通道的方案,从方案的设计,指标分配,到芯片的选型,再到利用软件进行仿真验证。给出了收发前端的供电规划。并详细介绍了系统在PCB中所采取的小型化抗过载措施。3、详细介绍了本文所设计的小型化微带线滤波器,给出了两个滤波器的仿真结果。对所采用的多曲折线以及电容加载的小型化措施进行了详细的介绍并利用仿真直观的给出结果。4、给出了本文作者所设计系统以及滤波器的实物图,滤波器、双工器和整个系统的测试图,并给出了测试结果。对测试结果进行了分析,并总结和归纳了本系统中存在的可改进之处。实验结果表明,本文所设计的小型化抗过载射频收发系统,可以较好地满足指标要求,其接收通道可以实现4850MHz~5000MHz到1097MHz的下变频,且其增益达到20dB,发射通道可以实现722MHz到4400MHz~4700MHz的上变频,且其发射功率达到19dBm。系统微波板表面面积为75mm×59mm,电源板表面面积为31mm×27mm,整体装配图体积约为88mm×67mm×22mm。系统具备一定的抗过载性能。
[Abstract]:Nowadays, airborne shipborne radar technology and wireless communication industry are developing rapidly.Transceiver is an important part of communication system and radar system.The performance of transceiver will directly affect the performance of radar system and the quality of wireless communication system.Therefore, high performance airborne radar transceiver has become a research hotspot in the new era.In view of the characteristics of airborne equipment, such as small size, light weight, low power consumption, and it needs to withstand the impact of certain acceleration in motion, etc.In this paper, a transceiver working in C-band is designed, which integrates miniaturization and anti-overload.The system mainly includes the design of receiving channel, transmitting channel, microstrip filter and power supply board, and realizes its miniaturization and anti-overload performance from various aspects.The main contents of this paper are as follows: 1, principle.The principle structure of receiver and transmitter is introduced in detail, the advantages and disadvantages of various transceivers in wireless communication are compared, and the basic theory of filter is given.Including classification and important index. 2. The scheme of receiving channel and transmitting channel is given in this paper, from the design of scheme, the allocation of index, the selection of chip, and the simulation verification by using software.The power supply planning of the transceiver front end is given.The miniaturization anti-overload measures. 3 adopted in PCB are introduced in detail. The miniaturized microstrip line filter designed in this paper is introduced in detail. The simulation results of two filters are given.The miniaturization measures of multi-zigzag line and capacitive loading are introduced in detail, and the result .4 is given by simulation, and the physical diagram and filter of the system designed by the author and the filter are given.The test diagram of the duplex and the whole system is given, and the test results are given.The test results are analyzed, and some improvements in the system are summarized.The experimental results show that the miniaturized anti-overload RF transceiver system designed in this paper can better meet the requirements of the target, and its receiving channel can realize the downconversion from 4850MHz~5000MHz to 1097MHz.The gain is up to 20 dB, and the transmission channel can realize the up-conversion from 722MHz to 4400MHz~4700MHz, and the transmission power can reach 19dBm.The surface area of the microwave plate is 75mm 脳 59mm, the surface area of the power supply board is 31mm 脳 27mm, the volume of the whole assembly drawing is about 88mm 脳 67mm 脳 22mm.The system has certain resistance to overload.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN957.5

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