Design of a Single-Layer Circuit Analog Absorber Using Double-Circular-Loop Array via the Equivalent Circuit Model
نویسندگان
1 Department of Electrical and Computer Engineering Isfahan University of Technology, Isfahan 84156-83111, Iran
2 Dept. of Electrical & computer Eng. Isfahan University of Technology
3 Department of Electrical and Computer Engineering Isfahan University of Technology, Isfahan 84156-83111, Iran
doi
10.22061/jecei.2018.790چکیده
A broadband Circuit Analogue (CA) absorber using double-circular-loop array is investigated in this paper. A simple equivalent circuit model is presented to accurately analyze this CA absorber. The circuit simulation of the proposed model agrees well with full-wave simulations. Optimization based the equivalent circuit model, is applied to design a single-layer circuit analogue absorber using double-circular-loop array. Simple guidelines for designing the CA absorber are then formulated. It is demonstrated that the fractional bandwidth of 125.7% is realized for at least 10 dB reflectivity reduction with angular stability to 40˚ for both TM and TE modes. The total thickness of the absorber design is 0.093λL at the lowest operating frequency.
