| Texto completo | |
| Autor(es): |
Raza, Ali
;
Souza, Mateus I. O.
;
Liaqat, Maryam
;
Pepino, Vinicius M.
;
Borges, Ben-Hur Viana
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS; v. 23, n. 11, p. 5-pg., 2024-11-01. |
| Resumo | |
This letter presents the design, fabrication, and characterization of an ultrawideband (UWB) microstrip patch antenna engineered for the early detection of breast tumors. The proposed design offers a nearly constant radiation pattern, high gain, and compact size through the utilization of an inhomogeneous artificial magnetic conductor (I-AMC) structure comprising four different unit cells. This design feature ensures uniform coverage and reception across breast tissue, which is critical for early-stage tumor detection. Operating in the 2.9 GHz to 7.0 GHz frequency band, the antenna integrates a back-plane reflector that helps increase the gain by 3 dB while enhancing bandwidth at low frequencies, thereby improving directivity and front-to-back ratio. The proposed antenna achieves a peak gain of similar to 8.1 dBi with the I-AMC. Furthermore, our antenna presents a radiation efficiency of over 86% and exhibits a nearly constant radiation pattern across 93% of its operating bandwidth. These characteristics highlight the antenna's suitability for applications such as the diagnosis of breast carcinoma and microwave imaging. (AU) | |
| Processo FAPESP: | 13/07276-1 - CEPOF - Centro de Pesquisa em Óptica e Fotônica |
| Beneficiário: | Vanderlei Salvador Bagnato |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |