“…On the basis of the transmission line theory, the reflection loss (R L ) values of the RAM1, RAM2 and RAM3 composites were calculated with complex permittivity, and permeability according to the following equations. 2–4 The R L results of RAM1, RAM2 and RAM3 with different thickness are given in Figures 6 and 7. Figure 6.Frequency dependences of microwave absorbing properties with different thicknesses for RAM1 (a), RAM2 (b) and RAM3 (c).Figure 7.Frequency dependences of microwave absorbing properties with different thicknesses for RAM3 (a) and RAM 2 (b).…”
Section: Resultsmentioning
confidence: 99%
“…The R L of composites backed by a metal (reflector) can be calculated and evaluated by the following R L equations 2–4 …”
Section: Resultsmentioning
confidence: 99%
“…To get over this problem, extensive studies have been made to develop ideal electromagnetic wave absorbing materials that exhibit good microwave absorbing properties. 3–7…”
Barium titanate (BaTiO3)-polyvinyl butyral (PVB) composites at various weight concentrations were prepared via ultrasonic probe sonicator. The sonication was carried out at 20 kHz and 70% amplitude for about 2 h and BaTiO3 nanoparticles were dispersed well in the mixture of PVB/ethanol under probe sonication. As a microwave absorbent, the microwave absorbing properties of the BaTiO3 nanoparticle-PVB composites with different mixture ratios of 5 wt.% (RAM1), 10 wt.% (RAM2) and 15 wt.% (RAM3) BaTiO3 were investigated based on transmission line theory in the frequency range from 1 GHz to 14 GHz. The minimum reflection loss (RL) of the RAM1 reaches −3.47 dB at 5.57 GHz with a matching thickness of only 7.0 mm. For RAM2 with 4 mm and 4.2 mm thickness ( tm), the RL values are less than −10 dB obtained in the frequency 10.3–13.4 GHz. The RAM3 composite with 15 wt.% BaTiO3 mixture ratio shows a minimum reflection loss of −43.8 dB at 11.01 GHz with a −15 dB bandwidth over the extended frequency range of 10.2–13.2 GHz for a thickness of 2.8 mm and −44.2 dB at 4.77 GHz for a thickness of 6.5 mm.
“…On the basis of the transmission line theory, the reflection loss (R L ) values of the RAM1, RAM2 and RAM3 composites were calculated with complex permittivity, and permeability according to the following equations. 2–4 The R L results of RAM1, RAM2 and RAM3 with different thickness are given in Figures 6 and 7. Figure 6.Frequency dependences of microwave absorbing properties with different thicknesses for RAM1 (a), RAM2 (b) and RAM3 (c).Figure 7.Frequency dependences of microwave absorbing properties with different thicknesses for RAM3 (a) and RAM 2 (b).…”
Section: Resultsmentioning
confidence: 99%
“…The R L of composites backed by a metal (reflector) can be calculated and evaluated by the following R L equations 2–4 …”
Section: Resultsmentioning
confidence: 99%
“…To get over this problem, extensive studies have been made to develop ideal electromagnetic wave absorbing materials that exhibit good microwave absorbing properties. 3–7…”
Barium titanate (BaTiO3)-polyvinyl butyral (PVB) composites at various weight concentrations were prepared via ultrasonic probe sonicator. The sonication was carried out at 20 kHz and 70% amplitude for about 2 h and BaTiO3 nanoparticles were dispersed well in the mixture of PVB/ethanol under probe sonication. As a microwave absorbent, the microwave absorbing properties of the BaTiO3 nanoparticle-PVB composites with different mixture ratios of 5 wt.% (RAM1), 10 wt.% (RAM2) and 15 wt.% (RAM3) BaTiO3 were investigated based on transmission line theory in the frequency range from 1 GHz to 14 GHz. The minimum reflection loss (RL) of the RAM1 reaches −3.47 dB at 5.57 GHz with a matching thickness of only 7.0 mm. For RAM2 with 4 mm and 4.2 mm thickness ( tm), the RL values are less than −10 dB obtained in the frequency 10.3–13.4 GHz. The RAM3 composite with 15 wt.% BaTiO3 mixture ratio shows a minimum reflection loss of −43.8 dB at 11.01 GHz with a −15 dB bandwidth over the extended frequency range of 10.2–13.2 GHz for a thickness of 2.8 mm and −44.2 dB at 4.77 GHz for a thickness of 6.5 mm.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
