單片機(jī)配合分頻器頻率設(shè)計(jì)論文.doc
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單片機(jī)配合分頻器頻率設(shè)計(jì)論文,摘要本系統(tǒng)以51單片機(jī)為控制核心,由正弦信號(hào)發(fā)生模塊、功率放大模塊、調(diào)幅(am)、調(diào)頻(fm)模塊、數(shù)字鍵控(ask,psk)模塊以及測(cè)試信號(hào)發(fā)生模塊組成。采用數(shù)控的方法控制dds芯片ad9850產(chǎn)生0hz-30mhz正弦信號(hào),經(jīng)濾波、放大和功放模塊放大至6v并具有一定的驅(qū)動(dòng)能力。測(cè)試信號(hào)發(fā)生模塊產(chǎn)生的1khz正弦信號(hào)...
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摘 要
本系統(tǒng)以51單片機(jī)為控制核心,由正弦信號(hào)發(fā)生模塊、功率放大模塊、調(diào)幅(AM)、調(diào)頻(FM)模塊、數(shù)字鍵控(ASK,PSK)模塊以及測(cè)試信號(hào)發(fā)生模塊組成。采用數(shù)控的方法控制DDS芯片AD9850產(chǎn)生0Hz-30MHz正弦信號(hào),經(jīng)濾波、放大和功放模塊放大至6v并具有一定的驅(qū)動(dòng)能力。測(cè)試信號(hào)發(fā)生模塊產(chǎn)生的1kHz正弦信號(hào)經(jīng)過(guò)調(diào)幅(AM)模塊、調(diào)頻(FM)模塊,對(duì)高頻載波進(jìn)行調(diào)幅或調(diào)頻。二進(jìn)制基帶序列信號(hào)送入數(shù)字鍵控模塊,產(chǎn)生二進(jìn)制PSK或ASK信號(hào),同時(shí)對(duì)ASK信號(hào)進(jìn)行解調(diào),恢復(fù)出原始數(shù)字序列。
另外,本系統(tǒng)從簡(jiǎn)單、調(diào)整方便、功能完備為出發(fā)點(diǎn),基本實(shí)現(xiàn)了設(shè)計(jì)中的要求,波形輸出較穩(wěn)定,且精度較高。本設(shè)計(jì)還配備有LED顯示屏、鍵盤,提供了友好的人機(jī)交互界面。
關(guān)鍵詞:直接數(shù)字頻率合成(DDS) AD9850 鎖相環(huán) VCO 調(diào)幅 調(diào)頻 數(shù)字鍵控
ABSTRACT
This system is in the core of Micro-Processor , consist of sine signal generating module, Power amplifier, Amplitude Modulator, Frequency Modulator, ASK/PSK module and test signal generating module. The AD9850 controlled by Micro-Process in digital way to generate sine signal with the bandwidth 0Hz to 30MHz adjustable per 1Hz. After processing by LPF & power amplifier, the output signal has a peak value of move than 6V. The sine signal at 1 KHz was send to AM and FM module to modulate the high frequency carrier waveform. The binary sequential was send to the relative module to generate ASK and PSK signal. At last demodulate module demodulate the ASK signal and got the same binary sequential as set before.
In addition,the design of this system is basically satisfy the requirements of the symplification ,easy-modification and full-function..the output square wave is very stable and its precision is also very high. In order to provide a friendly user interface, the LED and remote infrared control keyboard was introduced in this system.
Key words:DDS ; AD9850; PLL; VOC; AM; FM; ASK; PSK
目 錄
一 課程設(shè)計(jì)的內(nèi)容和要求…………………………………… 3
二 單片機(jī)80C51的簡(jiǎn)介及原理圖…………………………… 3
三 AD9850簡(jiǎn)介及原理圖…………………………………… 6
四 DDS信號(hào)源系統(tǒng)設(shè)計(jì)……………………………………… 7
五 程序設(shè)計(jì)………………………………………………… 11
六 參考文獻(xiàn)………………………………………………… 15
七 心得體會(huì)………………………………………………… 16
六 參考文獻(xiàn)
[1] 謝自美 電子線路設(shè)計(jì)•實(shí)驗(yàn)•測(cè)試 武漢 華中理工大學(xué)出版社
[2] 李友平 直接數(shù)字頻率合成器(DDS)的原理與設(shè)計(jì)電聲技術(shù).
[3] 求是科技 單片機(jī)典型模塊設(shè)計(jì)實(shí)例導(dǎo)航 北京 人民郵電出版社.
[4] 李光飛 單片機(jī)課程設(shè)計(jì)實(shí)例指導(dǎo) 北京 北京航空航天大學(xué)出版社
[5] 白駒珩 雷曉平 單片計(jì)算機(jī)及其應(yīng)用 成都 電子科技大學(xué)出版
[6] 李廣弟 單片機(jī)基礎(chǔ) 北京 北京航空航天大學(xué)出版社
.
本系統(tǒng)以51單片機(jī)為控制核心,由正弦信號(hào)發(fā)生模塊、功率放大模塊、調(diào)幅(AM)、調(diào)頻(FM)模塊、數(shù)字鍵控(ASK,PSK)模塊以及測(cè)試信號(hào)發(fā)生模塊組成。采用數(shù)控的方法控制DDS芯片AD9850產(chǎn)生0Hz-30MHz正弦信號(hào),經(jīng)濾波、放大和功放模塊放大至6v并具有一定的驅(qū)動(dòng)能力。測(cè)試信號(hào)發(fā)生模塊產(chǎn)生的1kHz正弦信號(hào)經(jīng)過(guò)調(diào)幅(AM)模塊、調(diào)頻(FM)模塊,對(duì)高頻載波進(jìn)行調(diào)幅或調(diào)頻。二進(jìn)制基帶序列信號(hào)送入數(shù)字鍵控模塊,產(chǎn)生二進(jìn)制PSK或ASK信號(hào),同時(shí)對(duì)ASK信號(hào)進(jìn)行解調(diào),恢復(fù)出原始數(shù)字序列。
另外,本系統(tǒng)從簡(jiǎn)單、調(diào)整方便、功能完備為出發(fā)點(diǎn),基本實(shí)現(xiàn)了設(shè)計(jì)中的要求,波形輸出較穩(wěn)定,且精度較高。本設(shè)計(jì)還配備有LED顯示屏、鍵盤,提供了友好的人機(jī)交互界面。
關(guān)鍵詞:直接數(shù)字頻率合成(DDS) AD9850 鎖相環(huán) VCO 調(diào)幅 調(diào)頻 數(shù)字鍵控
ABSTRACT
This system is in the core of Micro-Processor , consist of sine signal generating module, Power amplifier, Amplitude Modulator, Frequency Modulator, ASK/PSK module and test signal generating module. The AD9850 controlled by Micro-Process in digital way to generate sine signal with the bandwidth 0Hz to 30MHz adjustable per 1Hz. After processing by LPF & power amplifier, the output signal has a peak value of move than 6V. The sine signal at 1 KHz was send to AM and FM module to modulate the high frequency carrier waveform. The binary sequential was send to the relative module to generate ASK and PSK signal. At last demodulate module demodulate the ASK signal and got the same binary sequential as set before.
In addition,the design of this system is basically satisfy the requirements of the symplification ,easy-modification and full-function..the output square wave is very stable and its precision is also very high. In order to provide a friendly user interface, the LED and remote infrared control keyboard was introduced in this system.
Key words:DDS ; AD9850; PLL; VOC; AM; FM; ASK; PSK
目 錄
一 課程設(shè)計(jì)的內(nèi)容和要求…………………………………… 3
二 單片機(jī)80C51的簡(jiǎn)介及原理圖…………………………… 3
三 AD9850簡(jiǎn)介及原理圖…………………………………… 6
四 DDS信號(hào)源系統(tǒng)設(shè)計(jì)……………………………………… 7
五 程序設(shè)計(jì)………………………………………………… 11
六 參考文獻(xiàn)………………………………………………… 15
七 心得體會(huì)………………………………………………… 16
六 參考文獻(xiàn)
[1] 謝自美 電子線路設(shè)計(jì)•實(shí)驗(yàn)•測(cè)試 武漢 華中理工大學(xué)出版社
[2] 李友平 直接數(shù)字頻率合成器(DDS)的原理與設(shè)計(jì)電聲技術(shù).
[3] 求是科技 單片機(jī)典型模塊設(shè)計(jì)實(shí)例導(dǎo)航 北京 人民郵電出版社.
[4] 李光飛 單片機(jī)課程設(shè)計(jì)實(shí)例指導(dǎo) 北京 北京航空航天大學(xué)出版社
[5] 白駒珩 雷曉平 單片計(jì)算機(jī)及其應(yīng)用 成都 電子科技大學(xué)出版
[6] 李廣弟 單片機(jī)基礎(chǔ) 北京 北京航空航天大學(xué)出版社
.