Design of Miniaturized Wideband Microwave Absorber Loaded with Lumped Resistance

• DOI: 10.13164/re.2018.0746
• Publication Date: 2018-09-14T01:13:21Z
• Authors: J. X. Lan; X. Y. Cao; J. Gao; L. L. Cong; S. M. Wang; H. H. Yang
• Keywords: Wideband; Molar absorptivity; Frequency band

In this paper, a polarization and angular insensitive microwave absorber with miniaturized structure is proposed.This integrates lumped resistances into metallic bow-tie structure, thus achieving wideband absorbing performance.It can be found that the increases equivalent capacitance inductance, which enables an electrically small structure.The presence of substrate air layer contributes lot to broadband absorption in relative low frequency band.The size unit about 0.092λ L , total thickness only 0.080λ correspondence lowest frequency.Simulated results show absorptivity exhibits good stability respect different polarized incidence incident angles.The above 90% from 2.3 GHz 9.6 bandwidth 123%.The measured are agreement simulated one, demonstrates capable potentiality electromagnetic (EM) stealth applications.