Title :
Multiband frequency selective surface with open matryoshka elements
Author :
Gomes Neto, Alfredo ; Gomes Dassuncao Junior, Adaildo ; Costa e Silva, Jefferson ; Do Nascimento Cruz, Josiel ; Batista de Oliveira Silva, Joao ; Pereira de Lyra Ramos, Nieremberg Jose
Author_Institution :
Group of Telecommun. & Appl. Electromagn., GTEMA Fed. Inst. of Educ., Sci. & Technol. of Paraiba, Joao Pessoa, Brazil
Abstract :
In this work, we present a multiband FSS with open matryoshka elements obtained by the insertion of a gap in the matryoshka ring. Taking into account the unit cell dimensions, very low resonant frequencies, up to Wx / λ0 ≈. 0.065, and multiband behavior are observed, which are regarded as considerable advantages. The influence of the polarization is investigated and an approximate expression for the first resonance of the open matryoshka FSS is proposed. The frequency response for double rings, matryoshka and open matryoshka FSS are discussed. Three FSS, 2, 3 and 4 rings, were designed and fabricated using a low cost fiberglass substrate FR-4. The FSS were numerically and experimentally characterized, from 1.0 GHz to 18.0 GHz, considering both polarizations, x and y. Experimental results, when compared to numerical ones, present a very good agreement. Potential applications and the shown characteristics instigate other research groups to investigate the open matryoshka geometry.
Keywords :
electromagnetic wave polarisation; frequency response; frequency selective surfaces; glass fibres; fiberglass substrate FR-4; frequency 1.0 GHz to 18.0 GHz; frequency response; matryoshka ring; multiband FSS; multiband frequency selective surface; open matryoshka FSS; open matryoshka elements; open matryoshka geometry; Frequency selective surfaces; Geometry; Microwave circuits; Microwave communication; Microwave filters; Resonant frequency; FSS; multiband; open matryoshka;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
Conference_Location :
Lisbon
