Title :
Realization of Thin and Broadband Magnetic Radar Absorption Materials With the Help of Resistor FSS
Author :
Jie Zhou ; Shaowei Bie ; Dong Wan ; Haibing Xu ; Yongshun Xu ; Jianjun Jiang
Author_Institution :
Sch. of Opt. & Electron. Inf., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
In this letter, a kind of composite radar absorption material consisting of gradient and spiral square resistor frequency selective surface (FSS) and magnetic sheets is designed by HFSS. The use of resistor FSS makes a significant increase of operating bandwidth compared to single magnetic radar absorption materials (mRAMs). Under the condition of normal incident electromagnetic wave, it has remarkable absorptive performance with the reflectivity below -10 dB with a thin thickness of 2 mm in the range of 6-18 GHz. In addition, the composite mRAMs exhibits high angular stability when the incident angle ranges from 0 ° to 30 °. In order to illustrate the importance of resistors, a comparative experiment of structure with nonresistor FSS is made. Experimental results are compared to numerical simulations. They are in agreement with each other.
Keywords :
composite materials; frequency selective surfaces; microwave materials; radar absorbing materials; resistors; HFSS; angular stability; broadband magnetic radar absorption materials; composite radar absorption material; frequency 6 GHz to 18 GHz; gradient resistor frequency selective surface; mRAMs; magnetic sheets; nonresistor FSS; normal incident electromagnetic wave condition; numerical simulations; resistor FSS; size 2 mm; spiral square resistor frequency selective surface; thin magnetic radar absorption materials; Absorption; Bandwidth; Frequency selective surfaces; Materials; Random access memory; Reflectivity; Resistors; Frequency selective surface (FSS); magnetic radar absorption materials (mRAMs);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2349533
