Abstract：A microwave absorber for use in electric toll collection(ETC) system, having a central frequency of 5. 8 GHz is fabricated using Fe (iron made from carbonyl iron) and TiO2 mixed with rubber. The spectrum of complex permeability and permittivity and the reflectivity in the anechoic chamber of the composite sample were measured within 2. 0～18. 0 GHz. The results show that optimum composition ratio of absorbing materials was Fe∶TiO2 =7∶3 and confirm that the peak of reflectivity match the central frequency at the thickness of 1. 7 mm . the reflectivity for different incident angles were also tested,the lowest value can be less than -30 dB when normal incidence.
王舒阳，颜铄清，李启凡，陈中艳，冯则坤. 用于ETC系统的羰基铁粉二氧化钛复合吸波材料[J]. , 2014, 21(1): 21-26.
WANG Shu-yang, YAN Shuo-qing, LI Qi-fan, CHEN Zhong-yan, FENG Ze-kun. Composite Microwave Absorber for ETC Using Fe and TiO2. , 2014, 21(1): 21-26.
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2014, Vol. 21 
