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您的检索式：作者名="Yitang Yan"
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| 1 | Broadband photonic radio frequency(RF) channelization based on coherent optical frequency combs and polarization I/Q demodulation显示文摘In this work,we analyze and demonstrate a novel photonic-assisted broadband and high-resolution radio frequency(RF) channelization scheme based on dual coherent optical frequency combs(OFCs),regular optical de-muxes,and polarization I/Q demodulators in theory and experiment.The use of two coherent combs avoids precise optical alignment,and a numerical filter in digital signal processor(DSP) enables an ideal rectangular frequency response in each channel without any ultra-narrow optical filters.Besides,due to the use of polarization I/Q demodulation,ambiguous frequency estimate in direct detection can be avoided and the amplitude,phase mismatch in traditional I/Q demodulation can be mitigated.In experiment,we use two coherent OFCs with the free spectrum range(FSR) of about 40 GHz to demonstrate the channelization scheme with seven channels,500 MHz channel spacing and frequency coverage from 3.75 GHz to 7.25 GHz.The input RF tones are accurately down-converted to an intermediate frequency(IF) with a maximum frequency error of 110 kHz.Meanwhile,crosstalk and spurious free dynamic range(SFDR) of the scheme are also discussed. | DAI YiTang XU Kun XIE XiaoJun YAN Li WANG RuiXin LIN JinTong | 2013 | Chinese Science Bulletin2013，58，7： | 5 |
| 2 | Preface显示文摘Owing to the fast economic growing and the concern over greenhouse gases and air pollution,the development of nuclear energy is one important option to meet the expanded energy consumption in our future.To achieve that goal,continuing and reliable supplies of uranium are critical to future nuclear power projects.As is well known,global terrestrial reserves of uranium are limited and the deposits in China are relatively small.Given the projected big growth in nuclear power in the future,reliable supply of uranium at a reasonable price is essential for China. | DAI YiTang XU Kun XIE XiaoJun YAN Li WANG RuiXin LIN JinTong | 2013 | Science China Chemistry2013，56，11： | 2 |
| 3 | Genomic organization of four β-l,4-endoglucanase genes in plant-parasitic cyst nematodes and its evolutionary implications显示文摘 | YAN Yitang SMANT G STOKKERMANS J | 1998 | Gene1998，220，12： | 1 |
| 4 | Dissipative Soliton in Actively Mode-Locked Fiber Laser 显示文摘 | WANG Ruixin DAI Yitang YAN Ii | 2012 | Optics Express2012，20，6： | 1 |
| 5 | Endogenous cellulase in animals:Isolation of β-l,4-endoglucase genes from two species of plant-parastic cyst nematodes显示文摘 | Greart Smart Jack P W G Stokkermans Yitang Yan | 1998 | PANS1998，95，： | 1 |
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