Abstract
In this paper, a method to study and characterize a single-loop, cascaded and 1-bit Band-Pass Delta Sigma (BPΔΣ) modulator for digital transmitter is presented. This technique is based on a combination of digital filter simulation and nonlinear optimization of signal-to-quantization noise. The optimal coefficients of BPΔΣ structure are achieved by minimization of a quadratic criterion based on prediction error between desired digital filter and noise transfer model. To demonstrate the effectiveness of this approach, simulated results for a 6 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> order cascaded structure for WCDMA Band-1 standard are presented.
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