No abstract

In this work, a reduced size planarized antenna based on metamaterial split‐ring resonators (SRRs), for personal communications, is presented. The antenna is based on different size concentric SRRs that operates in the R band, centered at 2.3 GHz. The antenna area is about 15 × 25 mm2, approximately. The measured antenna gain is around −3 dB, with an omnidirectional pattern, and the measured bandwidth is about 1 GHz. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2345–2350, 2013

In this work, a three‐layered antenna array complemented with Uniplanar Compact Photonic‐Bandgap (UP‐PBG) structure is presented, for applications in the X‐band. The proposed array consists of circular patch radiator operating at 10 GHz, where the element is surrounded by UC‐PBG unit cells in order to improve the performance of the antenna. By combining the radiator and the UC‐PBG cells, the directivity, gain and polarization are kept, while the parasitic lobes are reduced 50% their magnitude. The bandwidth augments 44% compared to a conventional array, and a diminution of the surface propagation mode is obtained, increasing the radiation efficiency.