A Fast and Efficient Design Method for Circuit Analog Absorbers Consisting of Resistive Square-Loop Arrays

• Published in: IEEE transactions on electromagnetic compatibility Vol. 58; no. 3; pp. 747 - 757
• Main Authors: Ye Han, Wenquan Che, Christopoulos, Christos, Ying Xiong, Yumei Chang
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Absorbers; Analog circuits; Arrays; Circuit design; Electrochemical machining; Electromagnetic compatibility; Electronic countermeasures; equivalent circuit model (ECM); genetic algorithm (GA); Genetic algorithms; Gratings; Impedance; Integrated circuit modeling; Optimization; Permittivity; Reflection coefficient; square loops; Substrates; genetic algorithm (GA); equivalent circuit model (ECM); Absorbers; square loops
• ISSN: 0018-9375; 1558-187X
• DOI: 10.1109/TEMC.2016.2524553

This paper proposes a novel optimization design method for circuit analog absorbers consisting of resistor-loaded square-loop arrays. First, new precise equivalent circuit models (ECMs) for square-loop-array-based absorbers are derived through the synthetic asymptote method. The presented models are applicable for multilayered absorber with printed single or double SLAs on each layer. Then, the combination of this ECM and conventional genetic algorithm (GA) is proposed and provided a fast and efficient way to design broadband and low-profile SLA absorbers. For demonstration, four absorbers are designed and optimized. Finally, the agreement between the simulated and measured reflection coefficients indicates the validity of the presented method.