WIDE-BAND

作品数：130被引量：214H指数：7
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IMPACT OF WIDE-BAND I/Q MODULATION ERRORS IN SAR IMAGING ANALYSIS AND COMPENSATION METHOD RESAERCH
《Journal of Electronics(China)》2013年第3期222-230,共9页Qiao Ming Wang Jie Zhou Liangjiang LI Daojing 
Supported by 863 Program (2009AA12Z103);973 Program (2009CB72400)
Direct quadrature modulation technology is suitable for wide-band radar signal generation. However, this method has rigorous requirements on amplitude and phase balance of the orthogonal input signals. If the requirem...
关键词：Direct quadrature conversion Amplitude and phase unbalance Oscillator leakage Image frequency suppression Synthetic Aperture Radar (SAR) Interferometric SAR (In SAR) 
GTD MODEL-BASED TIME-SHIFT INVARIANT TARGET IDENTIFICATION USING MATCHING PURSUITS AND LIKELIHOOD RATIO TESTS
《Journal of Electronics(China)》2008年第2期186-191,共6页Wang Dangwei Guan Xinpu Wang Shaogang Ma xingyi Su Yi 
In order to improve the identification capability of ultra wide-band radar,this paper in-troduces a step-variant multiresolution approach for the time-shift parameter estimation. Subsequently,combining with the approa...
关键词：Target identification Geometrical Theory of Diffraction （GTD） model Scattering mechanism Wide-band radar 
A NOVEL WIDE-BAND CIRCULAR PATCH ANTENNA
《Journal of Electronics(China)》2005年第6期681-685,共5页Wang Jian Zhang Hou Huang Wenli Huang Xueyu 
In order to overcome the narrow-bandwidth of the patch antenna, one kind of configuration which can widen the bandwidth significantly is discussed in this letter. Analyzed by the equivalent-circuits method and simulat...
关键词：WIDEBAND Microstrip antenna Circular patch antenna 
AN EFFICIENT IMPLEMENTATION ARCHITECTURE FOR WIDE-BAND DIGITAL DOWNCONVERSION
《Journal of Electronics(China)》2001年第1期38-45,共8页Gao Zhicheng Xiao Xianci (University of Electronic Science and Technology of China, Chengdu 610054) 
The wide-band digital receiving systems require digital downconversion(DDC) with high data rate and short tuning time in order to intercept the narrow-band signals within broad tuning bandwidth. But these requirements...
关键词：DIGITAL DOWNCONVERSION WIDE-BAND DIGITAL receiving POLYPHASE FILTER 
STUDY ON THE WIDE-BAND AND HIGH-GAIN MICROSTRIP ANTENNA ELEMENT
《Journal of Electronics(China)》1997年第1期68-74,共7页Yao Demiao Cai Jianming Jiang Mingzhi(Department of Electronic Technology, National University of Defense Technology of China, Changsha 410073) 
A novel three layers microstrip antenna element that has the advantages of wideband and high-gain is proposed. The eigenvalue equation and the frequency characteristic formulas of the input Voltage Stand Wave Ratio ( ...
关键词：MICROSTRIP antenna WIDE BAND High GAIN 
2-D SPATIAL-SPECTRUM ESTIMATION FORWIDE-BAND SOURCES BASED ON INTERPOLATED CIRCULAR ARRAYS
《Journal of Electronics(China)》1996年第4期319-324,共6页Li Ping’an Yu Bianzhang Sun Jincai(Department of Electronic Engineering, Northwestern Polytechnicaj University, Xi’an 710072) 
In array signal processing, 2-D spatial-spectrum estimation is required to determine DOA of multiple signals. The circular array of sensors is found to possess several nice properties for DOA estimation of wide-band s...
关键词：ARRAY SIGNAL processing 2-D spatial-spectrum estimation WIDE-BAND SIGNAL Interpolated CIRCULAR ARRAY 
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