本文選題：教學(xué)套件 + 收發(fā)機(jī)��； 參考：《東南大學(xué)》2015年碩士論文

【摘要】：傳統(tǒng)射頻教學(xué)實(shí)驗(yàn)設(shè)備傾向于部件級別的教學(xué),往往功能單一、操作不便,難以適應(yīng)現(xiàn)代教學(xué)以及培養(yǎng)射頻系統(tǒng)級人才的需求。本文針對當(dāng)前射頻實(shí)驗(yàn)教學(xué)的實(shí)際需要,研制了一套功能齊全且操作簡單的射頻實(shí)驗(yàn)教學(xué)套件。本文首先根據(jù)教學(xué)需要,提出了一種操作便捷、功能豐富的射頻教學(xué)實(shí)驗(yàn)套件方案,并對其結(jié)構(gòu)及功能進(jìn)行了分析和闡述,確定了技術(shù)實(shí)施方案。本文中所設(shè)計的射頻教學(xué)套件采用子系統(tǒng)搭建的方案,在同一平臺上搭建出基帶信號子系統(tǒng)、射頻發(fā)射子系統(tǒng)、射頻接收子系統(tǒng),相干檢測子系統(tǒng)、電源及控制子系統(tǒng)共五個部分。最終進(jìn)行PCB版圖設(shè)計,并實(shí)現(xiàn)教學(xué)套件樣機(jī)。本文所設(shè)計的教學(xué)套件中基帶信號子系統(tǒng)電路使用單片機(jī)和FPGA相結(jié)合的硬件架構(gòu),單片機(jī)為主控部分,FPGA用于編解碼和電源控制。學(xué)生可以將教學(xué)套件通過USB2.0接口與電腦相連完成數(shù)字通信或測量系統(tǒng)實(shí)驗(yàn)。射頻發(fā)射子系統(tǒng)和射頻接收子系統(tǒng)中包含了鎖相環(huán)、混頻器、功率放大器、低噪放等電路,其中接收通道中的混頻器設(shè)計為鏡像抑制混頻器。射頻收發(fā)子系統(tǒng)中每個模塊都有輸入輸出端口,既可以完成單個模塊的實(shí)驗(yàn)測試,也可以使用同軸電纜連接子系統(tǒng)完成整個射頻收發(fā)系統(tǒng)的實(shí)驗(yàn)測試。電源及控制子系統(tǒng)中包括整個電源網(wǎng)絡(luò)布局和各個模塊電路的電源控制。另外相干檢測子系統(tǒng)為此教學(xué)套件的特色功能,用戶可以在此平臺上設(shè)計雷達(dá)或頻域反射計原理實(shí)驗(yàn)。對整個教學(xué)套件電路進(jìn)行調(diào)試并給出了測試結(jié)果,對測試中出現(xiàn)的問題進(jìn)行了分析并給出了技術(shù)改進(jìn)方案。
[Abstract]:The traditional RF teaching experiment equipment tends to be part level teaching, which often has a single function and inconvenient operation, so it is difficult to meet the needs of modern teaching and the training of personnel of RF system level. In order to meet the practical needs of current RF experiment teaching, a set of RF experimental teaching kit with complete function and simple operation is developed in this paper. In this paper, according to the teaching needs, a convenient and rich RF teaching experiment package is put forward, and its structure and function are analyzed and expounded, and the technical implementation scheme is determined. The RF teaching package designed in this paper adopts the scheme of subsystem, and builds the baseband signal subsystem, radio frequency transmitting subsystem, radio frequency receiving subsystem, coherent detection subsystem on the same platform. There are five parts in power supply and control subsystem. Finally, the PCB layout design, and the implementation of the teaching kit prototype. The circuit of baseband signal subsystem designed in this paper is based on the hardware architecture of single chip microcomputer and FPGA, which is the main control part for coding and decoding and power supply control. Students can complete digital communication or measurement system experiments by connecting the teaching kit to the computer via the USB2.0 interface. The RF transmitting subsystem and the RF receiving subsystem include phase-locked loop, mixer, power amplifier, low noise amplifier and so on. The mixer in the receiving channel is designed as mirror rejection mixer. In the RF transceiver subsystem, each module has an input and output port, which can not only complete the experimental test of a single module, but also use coaxial cable connection subsystem to complete the experimental test of the whole RF transceiver system. The power supply and control subsystem includes the whole power supply network layout and the power control of each module circuit. In addition, the coherent detection subsystem can design the principle experiment of radar or frequency-domain reflectometer on this platform. The circuit of the whole teaching package is debugged and the test results are given. The problems in the test are analyzed and the technical improvement scheme is given.
【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN702;G642

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本文編號：1795084