Development of a Portable COTS-Based CW Radar System at 2.4 GHz

Abstract

As smart radar sensors become increasingly integrated into modern life, this article provides a comprehensive tutorial for the design and implementation of a portable radar module, offering valuable design guidelines. The module operates in continuous wave (CW) modes, with selectable frequencies ranging from 2.25 to 2.50 GHz and a resolution of 100 kHz. A notable feature is its provision of both In-phase (I) and Quadrature (Q) components, which eliminates null points and enhances detection accuracy. The radar module integrates all necessary hardware components into a compact and efficient design, making it suitable for various security applications as well as non-contact monitoring and detection in the Internet-of-things (IoT) era.The design considerations outlined in this article highlight the module 2019;s versatility for various signal processing techniques, demonstrating its potential use in various applications for contactless sensing. Additionally, the discussion on utilizing in-house facilities to design and conduct simple experiments underscores the educational value of this module.