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This paper presents the improvement of rice husk ash (RHA) microwave absorber with adding carbon nanotubes (CNTs) into the composites. The electromagnetic properties of RHA and CNTs composites (RHACNTs) were measured using a rectangular waveguide (WR-62) transmission line technique with Agilent commercial software 85071E. The results show that, the additional 2 wt. % CNTs adding into the RHA composite...
Electromagnetic Interference (EMI) is a serious threat to the modern unprotected microelectronics-based integrated systems. Various techniques are implemented, to protect the mission critical and sensitive systems, against the EMI threats. One of the most important techniques is the use of absorbing material to suppress the EMI at the sources and/or receptors to ensure their Electromagnetic compatibility...
In designing a microwave absorber for anechoic chamber, there are many condition can affect the performance of microwave absorber. In this work, four conditions are discussed to compare the reflectivity or S11 of the pyramidal microwave absorber. The conditions are different signal source position, areas, angle, and lastly the distance between signal source and pyramidal microwave absorber. These...
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