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Experimental and numerical investigation of a ceramic dielectric resonator (DRA): CaCu3Ti4O12 (CCTO) |
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| Authors: | AFL Almeida RR Silva PBA Fechine FSA Cavalcanti FNA Freire ASB Sombra |
| Institution: | a Departamento de Física, Universidade do Aveiro, 3800-193 Aveiro, Portugal b Mestrado em Ciências Físicas Aplicadas, Universidade Estadual do Ceará, Campus do Itaperi 1700, CEP 60740-903 Fortaleza, Ceará, Brazil c Laboratório de Telecomunicações e Ciência e Engenharia dos Materiais (LOCEM), Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, CEP 60455-760 Fortaleza, Ceará, Brazil d Departamento de Engenharia de Teleinformática (DETI), Universidade Federal do Ceará, Caixa Postal 6007, CEP 60.755-640 Fortaleza, Ceará, Brazil e Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970 Fortaleza - CE, Brazil |
| Abstract: | In this study, the CaCu3Ti4O12 (CCTO) ceramic phase was synthesized by microwave heating in a much shorter time compared to the conventional heating methods. The results indicate that microwave processing is a promising method for preparing CCTO ceramics. CCTO was prepared using a domestic microwave oven operated at 2.45 GHz with 800 W. After a few minutes of microwave irradiation the formation of CCTO was confirmed by X-ray powder diffraction. The CCTO ceramic was studied in the medium-frequency (MF) range (100 Hz-1 MHz) and in the microwave range of frequencies. The experimental and theoretical characteristics of the dielectric resonator antenna are investigated. |
| Keywords: | Dielectric Electrical properties |
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