Comparison of various numerically controlled oscillators

S Kadam, D Sasidaran, A Awawdeh… - The 2002 45th …, 2002 - ieeexplore.ieee.org
A numerically-controlled oscillator (NCO) based upon the COordinate Rotational DIgital
Computer (CORDIC) algorithm offers less hardware than the direct form digital NCO at the …

Design techniques for direct digital synthesis circuits with improved frequency accuracy over wide frequency ranges

S Leitner, H Wang, S Tragoudas - Journal of Circuits, Systems and …, 2017 - World Scientific
Recently, there is increasing interest in impedance sensors for various applications. Direct
digital synthesis (DDS) circuits are commonly used in such sensor circuits for generating …

An improved numerically controlled digital oscillator

S Menon, G Cho, M Soderstrand - 2003 IEEE Pacific Rim …, 2003 - ieeexplore.ieee.org
Adding a small lookup table (LUT) to adjust the feedback in a second-order numerically
controlled digital oscillator (NCDO) eliminates all of the stability problems created by …

In-Phase and Quadrature-Phase Sinusoidal Signal Generation Using DDS Technique

AV D'Souza, DJ Ravi - IETE Journal of Research, 2023 - Taylor & Francis
In-phase and quadrature-phase (IQ) sinusoidal signals are used as bases functions in many
phase modulation schemes in communication systems. Generating such signals in …

Simple adaptive heterodyne filter

BM Veedu, M Soderstrand - The 2002 45th Midwest …, 2002 - ieeexplore.ieee.org
The tuning of the band pass filter in the simple heterodyne filter structure can be done over a
range of 90-degrees by changing the heterodyne frequency. However in this, the …