Transmission Attenuation Power Ratio Analysis of Flexible Electromagnetic Absorber Sheets Combined with a Metal Layer.

6533b836fe1ef96bd12a0b0f

RESEARCH PRODUCT

Transmission Attenuation Power Ratio Analysis of Flexible Electromagnetic Absorber Sheets Combined with a Metal Layer.

Alexander Gerfer Antonio Alcarria Julio Martos Raimundo Garcia-olcina Adrian Suarez Pedro A. Martinez Jorge Victoria Jose Torres J. Soret Steffen Muetsch

subject

Materials science Test fixture 02 engineering and technology complex permeability 01 natural sciences lcsh:Technology Electromagnetic interference Microstrip Article law.invention insertion loss law Transmission line 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Eddy current Insertion loss General Materials Science microstrip line flexible electromagnetic absorber sheet lcsh:Microscopy lcsh:QC120-168.85 010302 applied physics lcsh:QH201-278.5 power absorption business.industry lcsh:T Attenuation 020206 networking & telecommunications electromagnetic interference Magnetic field lcsh:TA1-2040 Optoelectronics magnetic materials lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering business lcsh:Engineering (General). Civil engineering (General)lcsh:TK1-9971

description

Electromagnetic noise absorber sheets have become a solution for solving complex electromagnetic interference (EMI) problems due to their high magnetic losses. This contribution is focused on characterizing a novel structure that is based on an absorber film with a metal layer attached on its top side. Two different absorber compositions were combined with Al and Cu metal layers in order to study the improvement on the performance of these structures, depending on the complex permeability, absorber film thickness, and type of metal. The transmission attenuation power ratio of the absorber films is analyzed and compared to the performance of absorber and metal structures. The measurement procedure is carried out attaching the films into a microstrip line that has been designed based on IEC standard (IEC 62333-2). This test fixture is employed as a transmission line to simulate a general noise path. The performance of absorber composites to filter electromagnetic noise is evaluated through analyzing S21 and S11 parameters. This is carried out with the aim of finding out in which conditions the absorption loss is improved when a metal layer is attached. In addition, the possible re-radiation effect, due to the magnetic field that is generated by the eddy currents induced in the metal layer, is examined.

year	journal	country	edition	language
2018-09-04	Materials (Basel, Switzerland)

10.3390/ma11091612 https://pubmed.ncbi.nlm.nih.gov/30181498