Increasing the Accuracy Characteristics of Focused Electromagnetic Devices for Non-Destructive Testing and Technical Diagnostics by Implementing Sum–Difference Signal Processing

• DOI: 10.3390/electronics12020436
• Publication Date: 2023-01-16T09:06:47Z
• Authors: Denis Vedenkin; Oleg Morozov; Yuri Sedelnikov; Timur Agliullin; Aydar Nasybullin
• Keywords: Aperture (computer memory); Field strength; SIGNAL (programming language)

Nowadays, the classical aperture theory is supplemented by data on properties of electromagnetic fields in near radiated field zone. A fundamental feature functioning antennas this area possibility spatial focusing energy. In case, it possible to realize maximum strength at a given point space and reduce outside point. The effect itself provided in-phase addition from elementary sources. Also, formation point, also minimum implementing antiphase partial forming sum difference amplitude distributions zone makes sum–difference signal processing order level secondary focused field. This article discusses features principles fields, along with implementation technical solutions for non-destructive testing diagnostic tasks.