| 二次变频接收的无线语音传输系统设计 |
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| 引用本文： | 欧阳明星.二次变频接收的无线语音传输系统设计[J].长沙通信职业技术学院学报,2012,11(3):28-33. |
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| 作者姓名： | 欧阳明星 |
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| 作者单位： | 广东松山职业技术学院电气工程系,广东韶关,512126 |
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| 摘 要： | 900M ISM频段工业干扰小,应用广泛,但模拟收发电路设计与调试困难,尤其是接收装置,二次变频接收可以提高接收灵敏度,减少像频干扰,改善接收效果,使用PLL技术获得稳定接收效果,全集成收发设计方案,结构简单,产品可嵌入到无线话筒、乐器拾音器等设备,电路结构简单,调试方便,应用前景广泛。
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| 关 键 词： | UHF 二次变频 像频 锁相环 |
Design of dual conversion receiving wireless voice transmission system |
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| OUYANG Ming-xing.Design of dual conversion receiving wireless voice transmission system[J].Journal of Changsha Telecommunications and Technology Vocational,2012,11(3):28-33. |
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| Authors: | OUYANG Ming-xing |
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| Affiliation: | OUYANG Ming-xing(Electrical Engineering Department,Guangdong Songshan Polytechnic College,Shaoguan,Guangdong,China 512126) |
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| Abstract: | The 900M ISM band has little industrial interference and been used widely,but the analog transceiver circuit design and debugging are difficult,especially in the receiving device.Dual conversion receiver can improve the receiver sensitivity,reduce the mirror frequency interference and better reception.Using PLL technology can get stable reception with fully integrated transceiver design scheme,simple structure,embedding into the wireless microphone,musical pickup and other equipment,convenient debugging and it has wide application prospect. |
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| Keywords: | UHF dual conversion mirror frequency PLL |
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