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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Constructing and optimizing hollow ZnxFe3-xO4@polyaniline composites as high-performance microwave absorbers 会议论文 作者:  Shang, Qiong;  Feng, Huixia;  Liu, Jianpu;  Lian, Qing;  Feng, Zeyu 收藏  |  浏览/下载：7/0  |  提交时间：2020/12/18 Dielectric lossesEffective absorption  Electrical conductivity  Electromagnetic parameters  In-situ chemical oxidations  Microwave absorption  Optimized composites  Polyaniline composites  Solvothermal process   A Circularly Polarized Magneto-Electric Dipole Leaky Wave Antenna with Broadside Radiation Based on SIW Technology 会议论文 Boston, MA, JUL 08-13, 2018 作者:  Dong, Xingchao;  Wang, Hongjian;  Liu, Yang;  Zhang, Lifang 收藏  |  浏览/下载：35/0  |  提交时间：2019/04/04 Leaky wave antenna  magneto-electric dipole  broadside radiation  circular polarization   Design of X-band GaAs power amplifier 会议论文 6th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies, MAPE 2015, Shanghai, China, October 28, 2015 - October 30, 2015 作者:  Xu, Hui;  Li, Mimi;  Xie, Yifang;  Huang, Yonghui 收藏  |  浏览/下载：15/0  |  提交时间：2016/11/08 Design of high-speed low-noise pre-amplifier for CCD camera (EI CONFERENCE) 会议论文 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China Xue X.; Zhang S.; Li H.; Guo Y. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 Pre-amplifier circuit is critical for the noise performance of the high speed CCD camera. Its main functions are amplification and impedance transform. The high speed and low noise pre-amplifier of CCD camera is discussed and designed in this paper. The high speed and low noise operational amplifier OPA842 is adopted as the main part. The gain-set resistors for the amplifier are designed optimally. The different precision gain-set resistors are swept using Monte Carlo method. CCD video signal which has high DC offset voltage is AC coupled to the amplifier. The output signal of the amplifier is source terminated using 50 ohms matching resistor so as to transmit the video signal through coaxial cable. When the circuit works in high speed  the PCB will have important effect to circuit performance and can even cause the amplifier unstable due to the parasitic problem of PCB. So the parasitic model of the PCB is established and the PCB layout design issues are also presented. The design result shows that the pre-amplifier can be used in the camera whose pixel rate could be up to 40 MHz and its input referred noise density is about 3 nV/Hz 1/2. 2010 Copyright SPIE - The International Society for Optical Engineering.