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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 Compact and low-profile eight-element loop antenna array for the 3.6-GHz MIMO operation in the future smartphone applications 会议论文 6th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2017, 2017-10-16 作者:  Wang, Hongwei[1];  Yang, Guangli[2] 收藏  |  浏览/下载：4/0  |  提交时间：2019/04/24 Design of a W-band four-channel dual-polarization waveguide slot antenna 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:  Guo, Xi;  Hao, Luo;  Hou-Jun, Sun 收藏  |  浏览/下载：12/0  |  提交时间：2016/11/08 A High-Gain Antenna Consisting of Two Slot Elements With a Space Larger Than a Wavelength 会议论文 IEEE Antennas and Wireless Propagation Letters, 2010 作者:  Cheng Huang;  Zeyu Zhao;  Qin Feng;  Xiangang Luo 收藏  |  浏览/下载：20/0  |  提交时间：2016/11/25 Developing of in-suit long trance profiler for testing slope error of aspherical optical Elements (EI CONFERENCE) 会议论文 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China Zhou C.; Li H.; Chen C.; Zhou C.; Qian S. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 Profile error of super smooth surface of optical elements at X-ray/EUV in synchrotron radiation (SR) light beam line is described as slope error of them generally. The Long Trace Profiler (LPT) is used for testing surface slope error of SR optical elements in world generally. It is requisite to use In-suit LTP measuring surface thermal distortion of SR optical elements with high heat under high bright SR source. Authors design an In-suit LTP by means of co-path interferometer with pencil light beam. The instrument not only can be used for testing slope error of mirrors in Lab. also in situation test the distortion of mirror with high heat load at synchrotron light beam line. The device can be used to test various absolute surface figures of optical elements such as aspherieal  spherical and plane. It is needless standard reference surface. It is named by LTP-III. This paper describes its basic operating principle  optical system  mechanical constructions  DC serve motor control system  array detector  data acquisition system and computer system for controlling and data analysis of LTP-III. The Instrument has advantages of high accuracy  low cost  multifunction and wide application. Length of surface measured of optical element accuracy is 0.04 arcsec.