b8c531cc-551b-405b-b4f2-7e7943d1698720220320041355533wseas:wseasmdt@crossref.orgMDT DepositEQUATIONS10.37394/232021https://wseas.com/journals/equations/112021112021110.37394/232021.2021.1https://wseas.com/journals/equations/2021.phpOtávio PaulinoLavorFederal Rural University of Semiarid - UFERSA BRAZILHumberto DionisioDe AndradeFederal Rural University of Semiarid - UFERSA BRAZILHumberto Cesar ChavesFernandesFederal University of Rio Grande do Norte - UFRN BRAZILMarinaldo PinheiroDe Sousa NetoFederal Institute of Education, Science and Technology of Rio Grande do Norte- IFRNThis paper presents a new proposal of microstrip planar antennas designed for frequencies of 2.5 GHz and 700 MHz, with an improvement in bandwidth and miniaturization. Using the truncated ground plane, it is achieved a reduction of about 70% in size in both antennas. The antenna designed for 2.5 GHz has the bandwidth changed of 55 MHz for 580 MHz, whereas the antenna designed for 700 MHz, the change was of 20 MHz for 268 MHz.48202148202129334https://wseas.com/journals/equations/2021/a08equations-004(2021).pdf10.37394/232021.2021.1.4https://wseas.com/journals/equations/2021/a08equations-004(2021).pdf10.1109/aps.2014.6904591S. A. Rezaeieh, A. M. Abbosh, Miniaturization techniques for antennas designed for microwave-based heart failure detection systems, Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE , 2014, pp.520-521. 10.5151/designpro-ped-01239P. F. da Silva Júnior , J. C. e Silva, P. H. F. Silva, Projeto de uma Antena de Folha para 700 MHz, MOMAG 2014: 16º SBMO - Simpósio Brasileiro de Micro-ondas e Optoeletrônica e 11º CBMag - Congresso Brasileiro de Eletromagnetismo, Curitiba, 2014. 10.2528/pier13061903J. Dong, Y. Jiao, Z. Weng, Q. Qiu, Y. Chen, A Coupled-fed Antenna for 4G Mobile Hand-set, Progress In Electromagnetics Research, Vol. 141, 2013, pp. 727-737. 10.5151/designpro-ped-00188J. C. e Silva, A. Gomes Neto, T. S. Evangelista, Desenvolvimento de Antena para Sistema de Comunicação Móvel 4G, MOMAG 2014: 16º SBMO - Simpósio Brasileiro de Micro-ondas e Optoeletrônica e 11º CBMag - Congresso Brasileiro de Eletromagnetismo, Curitiba, 2014. 10.1109/aps.2014.6904486S. Subramaniam, S. Dhar, K. Patra, B. Gupta, L. Osman, K. Zeouga and A. Gharsallah, Miniaturization of Wearable Electro-textile Antennas using Minkowski Fractal Geometry, Antennas and Propagation Society International Symposium (APSURSI), 2014, pp. 309-310. 10.1002/mop.28363M. P. Sousa Neto, H. C. C. Fernandes and C. G. Moura. Design of a Ultrawideband Monopole Antenna Using Split Ring Resonator for Notching Frequencies. Mivrowave and Optical Technology Letters, vol. 56, 2014, pp. 1471- 1473. 10.14209/sbrt.2016.193R. A. dos Santos, I. F. da Costa, A. Cerqueira Júnior; Novo Modelo de Antena Impressa com Banda Ultralarga. MOMAG 2014: 16º SBMO - Simpósio Brasileiro de Micro-ondas e Optoeletrônica e 11º CBMag - Congresso Brasileiro de Eletromagnetismo, Curitiba, 2014.