A 5 Gb/s adaptive equalizer with a new adaptation scheme is presented here by using 0.13μm CMOS process. The circuit consists of the combination of equalizer amplifier, limiter amplifier and adaptation loop. The adap...A 5 Gb/s adaptive equalizer with a new adaptation scheme is presented here by using 0.13μm CMOS process. The circuit consists of the combination of equalizer amplifier, limiter amplifier and adaptation loop. The adaptive algorithm exploits both the low frequency gain loop and the equalizer loop to minimize the inter-symbol interference （ISI） for a variety of cable characteristics. In addition, an offset cancellation loop is used to alleviate the offset influence of the signal path. The adaptive equalizer core occupies an area of 0.3567 mm2 and consumes a power consumption of 81.7 mW with 1.8 V power supply. Experiment results demonstrate that the equalizer could compensate for a designed cable loss with 0.23 UI peak-to-peak jitter.展开更多
With the improvement of social and scientific technology, some important amplifving system and even a lot of dance and song halls apply limiter for processing audio signals .This essay illustrates the status quo of li...With the improvement of social and scientific technology, some important amplifving system and even a lot of dance and song halls apply limiter for processing audio signals .This essay illustrates the status quo of limiters in China,the working principle and developing method of YX - Ⅰ limiter from the following aspects: electronic switch, compress amplifier, noise door. linked switch.the design of the complete machine and noise control and results.展开更多
基金Project supported by the National Natural Science Foundation of China(No.61376099)the Foundation for Fundamental Research of China(No.JSZL2016110B003)the Major Fundamental Research Program of Shaanxi(No.2017ZDJC-26)
文摘A 5 Gb/s adaptive equalizer with a new adaptation scheme is presented here by using 0.13μm CMOS process. The circuit consists of the combination of equalizer amplifier, limiter amplifier and adaptation loop. The adaptive algorithm exploits both the low frequency gain loop and the equalizer loop to minimize the inter-symbol interference （ISI） for a variety of cable characteristics. In addition, an offset cancellation loop is used to alleviate the offset influence of the signal path. The adaptive equalizer core occupies an area of 0.3567 mm2 and consumes a power consumption of 81.7 mW with 1.8 V power supply. Experiment results demonstrate that the equalizer could compensate for a designed cable loss with 0.23 UI peak-to-peak jitter.
文摘With the improvement of social and scientific technology, some important amplifving system and even a lot of dance and song halls apply limiter for processing audio signals .This essay illustrates the status quo of limiters in China,the working principle and developing method of YX - Ⅰ limiter from the following aspects: electronic switch, compress amplifier, noise door. linked switch.the design of the complete machine and noise control and results.
文摘限幅低噪声放大器(Low Noise Amplifier,LNA)是微波收发组件中的关键部件,用于对接收的射频信号进行放大。接收增益是限幅LNA的关键指标,增益下降可导致微波收发组件功能失效。综合采用外观检查、万用表测量、X光检查、扫描电子显微镜(Scanning Electron Microscope,SEM)等分析手段对某型限幅LNA增益下降的原因进行了分析,确定了故障失效的原因。结果表明,增益下降是由于工艺装配过程PIN二极管芯片与管壳安全间距不足导致。研究结果对类似产品的生产装配、检测检验、失效分析有一定的参考意义。
