VLBI wideband digital SSB converter based on poly-phase filter banks

	VLBI wideband digital SSB converter based on poly-phase filter banks
	Chen, Lan 1,2; Unbehauen, R.3; Luo, Jintao 2; Zhang, Xiuzhong 2; Rossmanith, Hans 5; Feng, Zhibiao 4
刊名	ELECTRICAL ENGINEERING
	2010-07-01
卷号	92 期号:2 页码:49-56
关键词	VLBI Data acquisition back end Digital base-band converter SSB FFT Poly-phase filter banks
英文摘要	With the further development in astronomy and deep space exploration, the incremental improvements to be expected in the very long baseline interferometry (VLBI) is real-time, high sensitivity, high reliability and wider frequency coverage. The VLBI data acquisition backend plays an important role in the VLBI station. Recently, based on advances in digital hardware like analog-to-digital conversion, digital signal processing, field programmable gate arrays (FPGA) and so on, it has become practical to sample and digitally process the intermediate frequency signal directly. Digital base-band converters (DBBC) will replace analog base-band converters (ABBC) in the VLBI data acquisition backend. This paper presents a sequence of simple modifications to sampled data structures based on the analog prototype system to obtain the basic poly-phase structure in a VLBI data acquisition backend. The theoretical principles of a digital SSB down converter are discussed in detail. The approach adopts multi-rate signal processing for the designed filters in a digital SSB down converter which is carried out by virtex-4 FPGA chips. The observation result shows this model of DBBC is of better performances than ABBC.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Electrical & Electronic
研究领域[WOS]	Engineering
收录类别	SCI
语种	英语
WOS记录号	WOS:000280069200002
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/26322]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Shanghai Inst Technol, Sch Mech & Automat Engn, Shanghai 200235, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Univ Erlangen Nurnberg, Lehrstuhl Allgemeine & Theoret Elektrotech, D-91058 Erlangen, Germany 4.Tongji Univ, Elect & Informat Engn Dept, Shanghai 200092, Peoples R China 5.Univ Erlangen Nurnberg, Lehrstuhl Elektromagnet Felder, D-91058 Erlangen, Germany
推荐引用方式 GB/T 7714	Chen, Lan,Unbehauen, R.,Luo, Jintao,et al. VLBI wideband digital SSB converter based on poly-phase filter banks[J]. ELECTRICAL ENGINEERING,2010,92(2):49-56.
APA	Chen, Lan,Unbehauen, R.,Luo, Jintao,Zhang, Xiuzhong,Rossmanith, Hans,&Feng, Zhibiao.(2010).VLBI wideband digital SSB converter based on poly-phase filter banks.ELECTRICAL ENGINEERING,92(2),49-56.
MLA	Chen, Lan,et al."VLBI wideband digital SSB converter based on poly-phase filter banks".ELECTRICAL ENGINEERING 92.2(2010):49-56.