A Novel Small Sierpenski Antennas

In This paper, new small antenna is described and it is designed to be used in RFID applications at microwave frequencies. This structure represents a new version of sierpenski antenna. The reduction of size by more than 75% gives this patch a great inters.  Two equivalent resonant models are presented based on a model of triangular and sierpenski patch antennas.DOI:http://dx.doi.org/10.11591/ijece.v3i4.258

A Circuit Model to a Directive Triangular EBG Antenna

In This paper, we propose a directive triangular EBG antenna. This approach is derived from using an EBG surface near to a triangular patch with two grilles. The antenna frequency chosen is the 2.45GHz. The directive antenna is simulated by using HFSS and Electrical model. This proposed antenna presents a very high directivity

A Circuit Model to an Encoche Coplanar Antenna for a Radio Frequency Identification TAG

In this paper, Miniature Encoche Coplanar antennas are proposed. Tovalidate our structure and to develop an analytic method to determine thegeometry parameters, the Lumped theory is used. The proposed structure issimulated using ADS and then Compared to the electrical Model. Theproposed circuit has the same resonant aspect when comparing to theEncoche antenna with a much reduced simulation time. The compactcoplanar antenna has a box with a size of 36*52*0.2 mm3. This antenna willbe designed to an RFID TAG that resonates on 2.45 GHz.DOI:http://dx.doi.org/10.11591/ijece.v3i3.257

A Modified Fractal Bow Tie Antenna for an RFID Reader

In this paper, fractal Bowtie antennas are proposed. To validate our structure and to develop an analytic method to determine the geometry parameters, the Lumped theory is used. The proposed structure is simulated using CST Microwave Studio and then Compared to the electrical Model. The proposed circuit has the same resonant aspect when comparing to the Bowtie antenna with a much reduced simulation time. The Bowtie antenna has a box with a size of   44 *80 *1.5 mm3. This antenna will be designed to an RFID Reader that resonates on 2.45 GHz.DOI:http://dx.doi.org/10.11591/ijece.v4i3.565

An electrical model to design a Metamaterial Left Hand Antenna

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 becomes very important because it’s simple, accurate and a very fast. Besides, once the model is built, it will be easy to control the structure with any change in the structure, the excitation, the substrate. The proposed antenna was manufactured on a FR-4 epoxy. The antenna is designed to RFID application, exactly for an RFID Reader. The antenna presents a significant gain superior to 16dB, and it is designed to simulate at 2.45 GHz

Miniaturized CSRR TAG Antennas for 60GHz Applications

In this paper, a novel approach to design an antenna for a transponder inradio frequency identification (RFID) is proposed. This approach is based onusing a slot-ring antenna with a coplanar waveguide excitation integratedantennas in silicon technology. The RFID frequency chosen is the worldwideavailable free 60-GHz band .The structure is simulated by using ComputerSimulation Technology (CST). The antenna size is 1.5 × 1.3 mm2. Thisproposed antenna presents a gain about 3.82 dB which means a possibility toincrease the readable range.DOI:http://dx.doi.org/10.11591/ijece.v4i1.472

Autism in Phenylketonuria Patients: From Clinical Presentation to Molecular Defects

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