This work demonstrates that the ΣΔ modulator with a low oversampling ratio is a viable option for the high-resolution digitization in a low-voltage *** power dissipation is achieved by designing a low-OSR modulator ...
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This work demonstrates that the ΣΔ modulator with a low oversampling ratio is a viable option for the high-resolution digitization in a low-voltage *** power dissipation is achieved by designing a low-OSR modulator based on differential cascade architecture,while large signal swing maintained to achieve a high dynamic range in the low-voltage *** from a voltage supply of 1.8V,the sixth-order cascade modulator at a sampling frequency of 4-MHz with an OSR of 24 achieves a dynamic range of 81dB for a 80-kHz test signal,while dissipating only 5mW.
This paper presents the design considerations and implementation of a novel topology digital multistage-noise-shaping （MASH） delta-sigma modulator suitable for fractional-N phase-locked-loop （PLL） frequency synthe...
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This paper presents the design considerations and implementation of a novel topology digital multistage-noise-shaping （MASH） delta-sigma modulator suitable for fractional-N phase-locked-loop （PLL） frequency synthesis. In an effort to reduce the complexity and dissipation,a pipeline technique has been used, and the proposed carry save tree （CST） algorithm optimizes the multi-input adder structure. The circuit has been verified through Matlab simulation, ASIC implementation, and FPGA experiment, which exhibits high performance and potential for a gigahertz range,low-power monolithic CMOS frequency synthesizer.
A RF low noise amplifier,integrated in a single bluetooth transceiver chip and fabricated in 0.35μm digital CMOS technology,is *** the consideration of ESD protection and package,design methodology is discussed from ...
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A RF low noise amplifier,integrated in a single bluetooth transceiver chip and fabricated in 0.35μm digital CMOS technology,is *** the consideration of ESD protection and package,design methodology is discussed from the aspects of noise optimization,impedance match,and forward *** 2.05GHz,the measured S 11 is -6.4dB, S 21 is 11dB with 3dB-BW of 300MHz,and NF is about *** indicates that comprehensive consideration of parasitics,package model,and reasonable process is necessary for RF circuit design.
A wavelet collocation method with nonlinear auto companding is proposed for behavioral modeling of switched current *** companding function is automatically constructed according to the initial error distribution ob...
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A wavelet collocation method with nonlinear auto companding is proposed for behavioral modeling of switched current *** companding function is automatically constructed according to the initial error distribution obtained through approximating the input output function of the SI circuit by conventional wavelet collocation *** practical applications,the proposed method is a general purpose approach,by which both the small signal effect and the large signal effect are modeled in a unified formulation to ease the process of modeling and *** with the published modeling approaches,the proposed nonlinear auto companding method works more efficiently not only in controlling the error distribution but also in reducing the modeling *** demonstrate the promising features of the proposed method,several SI circuits are employed as examples to be modeled and simulated.
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