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Non-destructive evaluation of reinforced concrete structures is an increasingly important field in the construction and civil engineering community. A large number of pathologies that affect both the concrete and the reinforced bar inside concrete are related to the presence of water and its spatial development. In this context, the quantification of both water content and bar diameter is an important...
A compact dual-band bandpass filter is designed to operate at 2.4/5.2 GHz without any input/output impedance matching. This filter is constructed of three resonators which are based on the stepped impedance resonators and hairpin resonators. The A1203 ceramic with a thickness of 0.6 mm and a relative dielectric constant of 9.4 was adopted as substrate. It is easy to be integrated with other RF circuits...
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