A very high speed bandpass continous time sigma delta modulator for RF receiver front end a d conversion

... suggestions for future work Chapter Sigma Delta Modulator – An Overview In this chapter, the basic concepts involved in analog-to-digital conversion and in a Sigma- Delta modulator has an ADC are looked ... translation, channel filtering, and quadrature demodulation are done in DSP This ADC should have a high dynamic range, high linearity and large bandwidth at RF fre...

Ngày tải lên: 26/09/2015, 10:51

... demand of high temperature circuits, this work presents a switched capacitor based high temperature low pass ΣΔ modulator Chapter introduces the fundamentals of A/D conversion and the operational ... of ΣΔ modulator Chapter studies the high temperature issues which may affect the circuit performance Some effective high temperature design techniques are introduced to mi...

Ngày tải lên: 12/10/2015, 17:36

... Bài giảng Thiết Kế Hệ Thống Số Phần VHDL VHDL Very High speed integrated circuit Description Language I CẤU TRÚC CỦA MỘT THIẾT KẾ DÙNG NGÔN NGỮ VHDL Ghi - ... A - (A / B) *B Kết toán tử MOD biểu toán hạng thứ hai, xác định sau: A mod B = A - B * N Sau ví dụ sử dụng toán tử mod rem: mod kết = 3; (-7 ) rem kết = -3 ; mod (-4 ) kết = -1 ; (-7 ) mod (-4...

Ngày tải lên: 12/09/2013, 22:38

... Development for Digital Subscriber Lines Systems, Macmillan, Indianapolis, Ind, USA, 1998 L Lin and B Farhang-Boroujeny [4] T Starr, J M Cioffi, and P J Silverman, Understanding Digital Subscriber ... techniques for very high speed digital subscriber lines,” IEEE Communications Magazine, vol 38, no 5, pp 98–104, 2000 [23] G Cherubini, E Eleftheriou, and S Olcer, “Filtered mult...

Ngày tải lên: 22/06/2014, 23:20

... Verilog : VHDL , Verilog : VHDL: , Verilog - â 2007 - .  VHDL? VHSIC (Very High Speed Integrated Circuit) Hardware Description Language 10 â 2007 - .  VHDL 1980 - U.S Department ... (DOD) Funded a Project to Create a Standard Hardware Description Language Under the Very High Speed Integrated Circuit (VHSIC) Program 1987 - the Institute of Electrical and Electronics Enginee...

Ngày tải lên: 19/08/2014, 19:33

... consideration is to place the center frequency Chapter Bandpass Sigma- Delta Modulators 15 Bandpass M Im z =1 Re Lowpass M Bandpass M Figure 2.12 Lowpass-to -bandpass transformation at frequencies which ... Chapter Bandpass Sigma- Delta Modulators 27 2.2 Review of Bandpass Ms Bandpass M is seen as a good candidate for IF digitization After the concept was proposed in 1989 [...

Ngày tải lên: 11/09/2015, 14:38

... micromechanical resonators in bandpass Σ∆ modulator design The design of a newly proposed 2nd-order bandpass Σ∆ modulator based on micromechanical resonator is presented The micromechanical resonator ... MICROMECHANICAL RESONATORS 28 RESONATOR MODEL 32 SENSING CIRCUITS 35 MICROMECHANICAL RESONATOR VERSUS LC AND GMC RESONATORS 36 CHAPTER BANDPASS SIGMA- DELTA...

Ngày tải lên: 26/11/2015, 12:15

... al.: Multistage Quadrature Sigma-Delta Modulators for Reconfigurable Multi-Band Analog-Digital Interface in Cognitive Radio Devices EURASIP Journal on Wireless Communications and Networking 2011 ... discussed in more detail in Section In the following subsections, multi-band and multistage principles will be presented These are important concepts, considering...

Ngày tải lên: 20/06/2014, 22:20

... Histogram-based audio watermarking against time-scale modification and cropping attacks IEEE Trans Multimedia 9(7):1357–11372 (2007) 20 S Xiang, HJ Kim, J Huang, Audio watermarking robust against time-scale ... IEEE Trans Speech Audio Process 11(4):381–386 (2003) doi:10.1109/TSA.2003.812145 doi:10.1186/1687-6180-2011-3 Cite this article as: Xiang: Audio watermarking rob...

Ngày tải lên: 21/06/2014, 03:20

... V1.6.1 [14] M L S Penaloza, G Baudoin, and M Villegas, “Analysis of a modified polar sigma-delta transmitter architecture for multiradio applications,” in Proceedings of the 18th International Conference ... Architecture of a polar ΣΔ transmitter with RF recombination [6] ρ Digital ΣΔ φ(t) Digital DAC x(t) PLL φ (t) PA cos (wc t + φ (t)) Figure 3: Architecture of the modified...

Ngày tải lên: 21/06/2014, 11:20

... the solubilization of excess sludge by high speed rotary disk process This method is a kind of physical treatment The excess sludge from final sedimentation tank in wastewater treatment plant was ... 813-818 Hasegawa, S., Miura, M., Katsura, K (1997) Solubilization of organic sewage by thermophilic bacteria Journal of Japan Sewage Works Association, Vol.34,...

Ngày tải lên: 05/09/2013, 08:40

... section, can realize this strategy 3.1 A HARDWARE ALGORITHM FOR MORPHEME EXTRACTION FUNDAMENTAL ARCHITECTURE A new hardware algorithm for the morpheme extraction, which was designed with the strategy ... Search Method (Knuth,197S) CONCLUSION This paper proposes a new hardware algorithm for high speed morpheme extraction, and also describes its implementatio...

Ngày tải lên: 21/02/2014, 20:20

... Annals of Mathematics, 158 (2003), 679–710 Approximating a bandlimited function using very coarsely quantized data: A family of stable sigma-delta modulators of arbitrary order By Ingrid Daubechies ... DEVORE , Approximating a bandlimited function using very coarsely quantized data: Improved error estimates in sigma-delta modulation, J...

Ngày tải lên: 05/03/2014, 23:20

... elongatus DpsA Fig S2 Thermal denaturation of Dps- Te and DpsATe Fig S3 Iron oxidation kinetics of DpsA- Te as a function of temperature Fig S4 Sedimentation velocity of Dps- Te and DpsATe before and ... The unusual Thermosynechoccus elongatus DpsA F Alaleona et al UV and gamma irradiation, and acid and base shock [3] Furthermore, it was established that the...

Ngày tải lên: 15/03/2014, 09:20

... hence more dictionary entries, than would otherwise be necessary.) Every word token in a text is a vestigand at the time it is being looked up Simple System Let us begin considering the dictionary ... in terms of the simplest type of organization, in which the machine dictionary is set up very much like an ordinary printed dictionary, except that stems themselves are used as headings,...

Ngày tải lên: 16/03/2014, 19:20