Silva, Sandro Gonçalves daBarros, Jannayna Domingues2014-12-172011-02-202014-12-172010-08-13BARROS, Jannayna Domingues. Estudo da detecção preventiva da osteoporose pela aplicação da variação da permissividade elétrica a partir da sondagem eletromagnética. 2010. 111 f. Dissertação (Mestrado em Automação e Sistemas; Engenharia de Computação; Telecomunicações) - Universidade Federal do Rio Grande do Norte, Natal, 2010.https://repositorio.ufrn.br/jspui/handle/123456789/15330This paper proposes a method based on the theory of electromagnetic waves reflected to evaluate the behavior of these waves and the level of attenuation caused in bone tissue. For this, it was proposed the construction of two antennas in microstrip structure with resonance frequency at 2.44 GHz The problem becomes relevant because of the diseases osteometabolic reach a large portion of the population, men and women. With this method, the signal is classified into two groups: tissue mass with bony tissues with normal or low bone mass. For this, techniques of feature extraction (Wavelet Transform) and pattern recognition (KNN and ANN) were used. The tests were performed on bovine bone and tissue with chemicals, the methodology and results are described in the workapplication/pdfAcesso AbertoAntenas de microfitaOsteoporoseProcessamento de sinaisWaveletRNAKNNMicrostrip antennasOsteoporosisSignal processingWaveletRNAKNNmasterThesisCNPQ::ENGENHARIAS