Guided wave ultrasonic testing (GWUT) within the realm of pipeline inspection is an
efficacious approach; however, current GWUT systems are characterized by high costs and …

This paper presents new techniques to implement direct digital frequency synthesizers
(DDFSs) with optimized piecewise-polynomial approximation. DDFS performances with …

A novel direct digital frequency synthesis (DDFS) architecture based on the differential
CORDIC (DCORDIC) algorithm is presented. The architecture allows digit-level pipelining in …

The authors present a review of phase to sine amplitude conversion (PSAC) techniques for
direct digital frequency synthesis (DDFS). Principles of DDFS are first considered, then …

This paper presents a direct digital frequency synthesizer (DDFS) based on the nonlinear
DAC with a maximum operating frequency of 2 GHz. This work proposes three design …

The use of the multipartite table methods (MTMs) to implement high-performance direct
digital frequency synthesizers (DDFSs) is investigated in this paper. A closed-form …

This paper presents a novel direct digital frequency synthesis (DDFS) ROM compression
technique based on two properties of a sine function:(a) piecewise linear technique to …

We propose a direct digital frequency synthesizer (DDFS) by using an error-controlled
piecewise linear (PWL) approximation method. For a given function and a preset max …

This paper introduces a novel direct digital frequency synthesizer (DDFS) with an
architecture based on the quasi-linear interpolation method (QLIP). The QLIP method is a …

The paper presents a detailed description of a direct digital frequency synthesizer (DDFS)
based on a Multipartite Table Method (MTM) which is a salient lookup table compression …