CORC

在结果中检索

CORC

浏览/检索结果: 共11条，第1-10条 帮助

已选(0)清除 条数/页：   排序方式：
Single-fed broadband circularly polarised dipole antenna with simple structure 期刊论文
ELECTRONICS LETTERS, 2017, 卷号: 53, 页码: 134-136
作者:  Xue, Hai-Gao[1];  Yang, Xue-Xia[2];  Ma, Zhewang[3];  Wang, Yan[4]
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/24
Compact broadband circularly-polarised directional universal GNSS antenna with symmetric radiation pattern and stable near-zenith coverage 期刊论文
IET MICROWAVES ANTENNAS & PROPAGATION, 2017, 卷号: Vol.11 No.5, 页码: 657-663
作者:  Liu, Q;  Li, Y;  Mo, ZG;  Liu, YA
收藏  |  浏览/下载：10/0  |  提交时间：2019/12/31
L-1-deficiency of the sample quantile estimator with respect to a kernel quantile estimator 期刊论文
STATISTICS & PROBABILITY LETTERS, 2013, 卷号: 83, 期号: 10, 页码: 2399-2406
作者:  Zhao, Mu;  Jiang, Hongmei;  Zhou, Yong
收藏  |  浏览/下载：2/0  |  提交时间：2019/08/22
1 GHz monolithic fractional-N frequency synthesizer with a 3-b third-order delta-sigma modulator 期刊论文
2010, 2010
Chi Bao-yong; Zhu Xiao-lei; Huang Shui-long; Wang Zhi-hua
收藏  |  浏览/下载：8/0
A 1 V, 156.7 mu W, 65.9 dB rail-to-rail operational amplifier by means of negative resistance load and replica-amplifier gain enhancement 期刊论文
2010, 2010
Liu Airong; Yang Huazhong
收藏  |  浏览/下载：3/0
Color videos' multichannel combination for bandwidth reduction and fast frequency domain processing (EI CONFERENCE) 会议论文
2nd International Workshop on Education Technology and Computer Science, ETCS 2010, March 6, 2010 - March 7, 2010, Wuhan, Hubei, China
Li S.; Jing S.; Song Y.; Zhang B.
收藏  |  浏览/下载：12/0  |  提交时间：2013/03/25
Phase characteristics of laser beam in fibers (EI CONFERENCE) 会议论文
5th International Workshop on Adaptive Optics for Industry and Medicine, August 29, 2005 - September 1, 2005, Beijing, China
Chai C.; Liu S.; Liu J.; Wang L.; Jia G.
收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25
The phase changing rates1 of laser beam in single mode polarization maintaining fiber (PMF)  Yb-doped rectangular inner cladding dual-clad fiber (DCF) and Yb-doped large-mode-area dual-clad fiber (LMF) are investigated by means of interference under situations with different exterior disturbance  for situations that all the fibers are used as transmission medium only  as well as amplifying medium with the last two. In this paper  phase fluctuation characteristics of the beam transmitted through the fibers with no amplification are presented. The results show that the phase fluctuation frequencies of the laser beam transmitted through these three kinds of fibers are mainly in the range of 100-200Hz  100-300Hz and 80-400Hz respectively in normal laboratory environment. The phase fluctuation frequencies of the laser beam transmitted through the DCF  in cases of when the environment temperature is changing  a constant pressure is applied to the fiber and when vibration is applied  are mainly in the range of 100-600Hz  100Hz-300Hz and 100-500Hz respectively. In the same cases  for the LMF  the phase fluctuation frequencies are mainly in the range of 150-600Hz  100-400Hz and 100-1000Hz  respectively. It indicates that for realizing phase stabilization  the bandwidth of any potential phase control2 system has to be in the range of a few kilohertz.  
Packaging technology of polymer/Si arrayed waveguide grating and their environmental stability (EI CONFERENCE) 会议论文
2005 6th International Conference on Electronics Packaging Technology, August 30, 2005 - September 2, 2005, Dameisha, Shenzhen, China
Zhang D.; Wang F.; Zhang Y.; Zhang X.; Deng W.; Shulin E.
收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25
Future optical communication systems will use more of the exceptional high bandwidth of optical fiber. Wavelength division multiplexing (WDM) systems are well suited to transport terabits of information via the fiber[1]. Multiplexers/ demultiplexers (MUX/DEMUX) are essential components for dense WDM systems. Several different kinds of multiplexer types have been developed in the past: (a) interference filters  (b) fiber gratings  and (c) planar lightwave circuit (PLC) MUX/DEMUXers[2  3]. The planar fabrication process of the last mentioned PLCs allows the realization of high performance filters with a large number of wavelength channels. Further  an integration with other optical elements seems to be possible. Arrayed waveguide gratings (AWG) are a special kind of PLC-MUX/DEMUXers  which are very attractive components for WDM systems because of their great flexibility in filter design[4  5]. Basically  an AWG is an optical spectrograph built in planar waveguide technique. Typically  AWGs works in a high grating order (50-250). For AWG multiplexer applications in communications systems a precise wavelength controllability and wavelength stability with long term is demanded. Recently  a polymeric (especially fluorinated polymer with low optical absorption loss in the infrared region) AWG has attracted much attention because of its easy fabrication  low cost possibility and a potential of integration with other polymer devices[6]. Standard AWGs  however  show a change of center wavelength with temperature. A method to prevent this temperature drift is to package the AWG together with a temperature controller in order to tune and fix the desired filter-wavelength. In this paper  a 32-channel AWG was fabricated using a cross-linkable fluorinated poly (ether ether ketone) (FPEEK)  its package technology and environmental stability were also discussed. 2005 IEEE.  
Transport and stability properties of the charge ordered state for Sm1-xCaxMnO3 (0.4 <= x <= 0.8) 期刊论文
Journal of Applied Physics, 2004, 卷号: 95, 期号: 3, 页码: 977-981
T. Qian; G. Li; Q. Han; X. Y. Guo; Y. Liu; J. F. Qu; X. G. Li
收藏  |  浏览/下载：7/0  |  提交时间：2012/04/14
Kernel density estimation for spatial processes: the L-1 theory 期刊论文
JOURNAL OF MULTIVARIATE ANALYSIS, 2004, 卷号: 88, 期号: 1, 页码: 61-75
作者:  Hallin, M;  Lu, ZD;  Tran, LT
收藏  |  浏览/下载：13/0  |  提交时间：2018/07/30

©版权所有 ©2017 CSpace - Powered by CSpace