Sabri Beldi

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In this article we have presented a new design of a monopole antenna mobile phone, which covers several bands with circular polarization. The proposed antenna generates five resonant frequencies. Our antenna has a bandwidth band that has bands of wireless communication systems such as GSM (880 960 MHz), DCS (1710 1880 MHz), PCS (1850 1990 MHz), UMTS (1920(More)
This paper focuses on the basic concepts of chipless Radio Frequency IDentification (RFID) tag at 30 GHz destined for short range applications. Chipless RFID is proposed as the solution for low cost item tagging. The chipless tag encodes data into the spectral signature using a multiresonator. Both amplitude and phase components of the spectral signature(More)
This paper proposes a novel approach to study the Left hand antenna using an adequate electrical model. The structure is composed by a periodic Split Ring Resonator and a metallic wires, that's why the proposed model take into consideration the model of each element and the coupling between the element. Due to the complexity of the structure, the model(More)
The new design of patch antenna with complementary split-ring resonators (CSRRs) and reactive impedance surface (RIS) is presented in this paper. The meta-resonator (CSRRs) and the meta-surface are able to miniaturize the antenna size. This antenna is designed, including a circularly-polarized antenna.
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