| 一种可编程的高抗干扰AGC的设计 |
| |
| 引用本文： | 温杰,吴治霖,石玉,刘兰,胡越,刘乐乐.一种可编程的高抗干扰AGC的设计[J].电子科技,2019,32(1):76-79. |
| |
| 作者姓名： | 温杰 吴治霖 石玉 刘兰 胡越 刘乐乐 |
| |
| 作者单位： | 1. 电子科技大学 微电子与固体电子学院,四川 成都 6100542. 中国电子科技集团公司第三十研究所, 四川 成都 6100413. 中国电子科技集团公司第二十九研究所,四川 成都 610036 |
| |
| 基金项目： | 国家自然科学基金(61471086) |
| |
| 摘 要： | 在射频接收系统中,自动增益控制(AGC)电路能够有效改善接收机的动态范围。文中设计了一种可编程的高抗干扰AGC电路,采用“窄带滤波+对数放大+模数转换+单片机”的负反馈方式实现自动增益控制功能。经过实际测试,该电路在初始信噪比、信噪比分别恶化30 dB、60 dB和85 dB共4种情况下,增益动态范围达到32 dB,输出信号的功率误差<0.5 dB,表明该电路结构在恶劣的信噪比环境中仍然能够正常工作,具有良好的抗干扰能力。
|
| 关 键 词： | 射频 自动增益控制 信噪比 功率检测 抗干扰 编程控制 |
| 收稿时间： | 2017-12-20 |
Design of a Programmable High Anti-interference AGC |
| |
| WEN Jie,WU Zhilin,SHI Yu,LIU Lan,HU Yue,LIU Lele.Design of a Programmable High Anti-interference AGC[J].Electronic Science and Technology,2019,32(1):76-79. |
| |
| Authors: | WEN Jie WU Zhilin SHI Yu LIU Lan HU Yue LIU Lele |
| |
| Affiliation: | 1. School of Microelectronics and Solid-state Electronics,University of Electronic Science and Technology of China,Chengdu 610054, China2. The 30th Research Institute of China Electronic Technology Group Corporation, Chengdu 610041,China3. The 29th Research Institute of China Electronic Technology Group Corporation,Chengdu 610036,China |
| |
| Abstract: | In the RF receiving system, Automatic Gain Control (AGC) circuit can effectively improve the dynamic range of the receiver. A programmable high anti-interference AGC circuit was designed to realize AGC by means of “narrow-band filter+logarithmic amplifier+analog-to-digital conversion+microcontrollers”. Through the practical test, in four conditions (including initial Signal Noise Ratio, SNR deteriorates 30 dB, 60 dB and 85 dB), the gain dynamic range reached 32 dB, and the power error of the output signal was less than 0.5 dB. It was shown that the structure of the circuit can still work normally in the bad SNR environment and had good anti-interference ability. |
| |
| Keywords: | radio frequency automatic gain control signal noise ratio power detection anti-interference programmable control |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《电子科技》浏览原始摘要信息 |
|
点击此处可从《电子科技》下载全文 |
|
