Adaptive impedance matching in microwave and terahertz metamaterial absorbers using PIN diodes and GaN HEMTs
Yunpeng Liu,
Suriani Ibrahim,
Nazia Abdul Majid
et al.
Abstract:Metamaterial absorbers allow electromagnetic waves to be converted into heat energy based on impedance matching. However, passive metamaterial absorbers exhibit fixed absorption characteristics, limiting their flexibility. This work demonstrates tunable microwave and terahertz absorbers by integrating adjustable resistors into the metamaterial units. First, a microwave absorber from 1-5 GHz was designed by embedding PIN diodes with voltage-controlled resistance. Calculations, simulations, and measurements veri… Show more
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