A Novel Sigma-Delta Modulator with Fractional-Order Digital Loop Integrator
نویسندگان
چکیده
منابع مشابه
Nonlinear Dynamics of a Sigma-Delta modulator with Integrator Leakage
Sigma-delta (Σ∆) modulators are widely used for analogue-to-digital and digital-to-analogue conversion in both discrete-time and continuous-time implementations [1]. A Σ∆ modulator is an example of a nonlinear system, the nonlinearity being introduced by the presence of the quantiser. In [2] we applied results of our work on driven interval shifts to explain the steady-state dynamics of the fir...
متن کاملDigital High Order Multiplier-free Delta Sigma Modulator for Multistandard Fractional-N Frequency Synthesizer
This paper proposes a new stable design strategy for 1bit high order digital ∆Σ modulator for multistandard fractionalN frequency synthesizer. The proposed digital ∆Σ modulator presents simplicity, low power consumption and controls a dualmodulus divider instead of multi-modulus one as in existing ∆Σ fractional-N frequency synthesizer. Simulation results illustrate the ∆Σ modulator good perform...
متن کاملA 1v Second Order Sigma-delta Modulator
A second order switched capacitor sigma-delta modulator operating at a supply voltage of 1 V is presented. This low supply voltage restricts the gate overdrive voltage available for switching transistors. The design relies on the elimination of critical switches by using a modified switched op amp for the integrator and novel switched half-supply and reference voltage generators. The design has...
متن کاملA 4th-order Bandpass Sigma-delta Modulator
Digital radio receivers must perform the analog-to-digital conversion of bandpass signals. For signals with small relative bandwidths, bandpass XA analog-to-digi ta l converters offer high signal-to-noise ratios at significantly lower sampling rates than are required for lowpass ZA converters, while still providing excellent linearity. A 4thorder bandpass ZA modulator implemented in a 3 pm CMOS...
متن کاملModeling of a Second Order Sigma-Delta Modulator with Imperfections
Abdelghani Dendouga, Nour-Eddine Bouguechal, Souhil Kouda and Samir Barra Advanced Electronic Laboratory, Batna University, Algeria 05 Avenue Chahid Boukhlouf, 05000 BATNA, ALGERIE E-mail: [email protected] Abstract—Sigma delta modulators (ΣΔMs) form part of the core of today’s mixed-signal designs. The ongoing research on these devices shows the potential of ΣΔ data converters as a promi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mathematical Problems in Engineering
سال: 2017
ISSN: 1024-123X,1563-5147
DOI: 10.1155/2017/9861383