中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共7条,第1-7条 帮助

条数/页: 排序方式:
Redshifted methanol absorption tracing infall motions of high-mass star formation regions 期刊论文  OAI收割
Astronomy & Astrophysics, 2022, 卷号: 658, 页码: A192
作者:  
Yang, W. J.;  Menten, K. M.;  Yang, A. Y.;  Wyrowski, F.;  Gong, Y.
  |  收藏  |  浏览/下载:42/0  |  提交时间:2023/06/19
Atmospheric Retrievals and Assessment for Microwave Observations from Chinese FY-3C Satellite during Hurricane Matthew 期刊论文  OAI收割
REMOTE SENSING, 2019, 卷号: 11, 期号: 8, 页码: 896
作者:  
He, Jieying;  Chen, Haonan
  |  收藏  |  浏览/下载:51/0  |  提交时间:2019/06/26
Assessment of the SMAP Soil Emission Model and Soil Moisture Retrieval Algorithms for a Tibetan Desert Ecosystem 期刊论文  OAI收割
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2018, 卷号: 56, 期号: 7, 页码: 3786-3799
作者:  
Colliander, A (Colliander, Andreas);  Su, ZB (Su, Zhongbo);  Zheng, DH (Zheng, Donghai);  van der Velde, R (van der Velde, Rogier);  Wen, J (Wen, Jun)
  |  收藏  |  浏览/下载:67/0  |  提交时间:2019/06/04
Study on infrared transparent radar double band-pass filter (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011, November 18, 2011 - November 20, 2011, Guangzhou, China
Jia H. Y.; Feng X. G.
收藏  |  浏览/下载:40/0  |  提交时间:2013/03/25
To realize the functions of infrared transparent as well as radar double- pass Band  A Y loop and Y slot compound element Frequency Selective Surface (FSS) structure is proposed  which takes an infrared transparent inductive mesh as a substrate. The proposed structure is analyzed based on Galerkin spectral method. The transitivity of infrared (3um-5um) as well as the radar double passed band with two resonance frequencies (31GHz and 54GHz) is discussed. The result reveals that this structure has function of infrared transparent as well as stable radar double-band filter with effective shielding effect on S-band and C-band radar electromagnetic waves. The design with multiple passband is suitable for radar/IR composite guidance and it also offers a kind of new thinking way of design for multi-mode compound guidance systems. 2011 Trans Tech Publications.  
3GHz低功耗低相位噪声的带自偏置电流源的LC压控振荡器 期刊论文  OAI收割
半导体学报, 2008, 卷号: 29, 期号: 11, 页码: 4,2106-2109
作者:  
陈普锋;  李志强;  黄水龙;  张海英;  叶甜春
  |  收藏  |  浏览/下载:35/0  |  提交时间:2010/05/27
Low drive-voltage and high-bandwidth electro-optic modulators based on BaTiO3 thin-film waveguides (EI CONFERENCE) 会议论文  OAI收割
Science and Technology of Dielectrics for Active and Passive Photonic Devices - 210th Electrochemical Society Meeting, October 29, 2006 - November 3, 2006, Cancun, Mexico
Sun D. G.; Fu X. H.; Liu Z. F.; Ho S. T.; Wessels B. W.
收藏  |  浏览/下载:62/0  |  提交时间:2013/03/25
We investigated electro-optic modulator structures to target low drive voltage  high-speed modulation  and small device size with c-axis grown BaTiO3/MgO ferro-electric thin films. In this study  the calculations are focused on the ideal thin film with a quadratic relation between the half-wave drive voltage V and the interaction length L in the electro-optic modulation case we obtained in previous work. With the quadratic electro-optic modulating relation and the optimal rib waveguide structure of BaTiO3/MgO thin films  the frequency-voltage-size performances for 2.5GHz  10GHz  40GHz  and 100GHz modulation bandwidths have been obtained under half-wave drive voltages of 0.8V  1.6V  3.0V and 4.8V  respectively  for the ideal film with r51=730 pm/V at 1550nm wavelength  where both the phase velocity matching condition and the conductor induced microwave attenuation are considered. The required device lengths to achieve these four typical values of modulation bandwidth are 3.3 mm  0.8 mm  0.4 mm and 0.2 mm  respectively. With the c-axis grown BaTiO3/MgO crystal thin films and the quadratic electro-optic modulating relation  an electro-optic coefficient of reff=180 pm/V for the c-axis grown BaTiO3/MgO ferro-electric thin films was measured  which is relatively far from the ideal value of r51=560 pm/V. copyright The Electrochemical Society.  
New solar broadband radio spectrometer (SBRS) in China 期刊论文  OAI收割
SOLAR PHYSICS, 2004, 卷号: 222, 期号: 1, 页码: 167-175
作者:  
Fu, QJ;  Ji, HR;  Qin, ZH;  Xu, ZC;  Xia, ZG
收藏  |  浏览/下载:58/0  |  提交时间:2012/12/22