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Near electromagnetic fields radiated by a Library RFID system has been characterized and studied in this work. An RFID reader loop antenna operating at 13.56 MHz was designed. The radiated magnetic field above the fabricated circuit was measured using a 3D H-field probe especially designed for near-field measurements. The obtained levels were checked in terms of satisfaction of the European Directives...
In this paper, a beamforming system for LTE- Advanced based on Array sampling technology is proposed. Antenna Array that has been designed covers LTE mid and high bands. RF multiplexer 8x1 switch has been designed and simulated. The system is composed of agile RF frontend and FPGA digital signal processing unit.
In this paper, we present a drone dual-frequency technique in order to detect thick oil slicks in ocean. From physical point of view, the problem is considered to be a multi-layers wave surface scattering model where we study the reflection of the electromagnetic (EM) waves from the sea layer covered by oil layer. The electrical properties and the physical characteristics are defined for the layers...
In this paper, a test bed for LTE-Advance Beamforming is proposed. The test bed is composed of an 8×1 monopole antenna array matched at the mid and higher bands for LTE operating in Europe, wide band transceivers with agile architectures provided by Analog Devices, and mid range FPGA from Xilinx for antenna weight calculation and beamforming on the fly. The test bed is promising to give a useful mean...
In this paper, a new miniaturized wide Band-Pass Substrate Integrated Waveguide (SIW) filter is proposed. The miniaturized design is based on two techniques, combining the Slow-Wave and Half-Mode SIW principles. Also different substrates for each layer with high contrast in the effective permittivity are used. This technique shows that the SIW filter is 90% miniaturized with a bandwidth covering the...
Here in this paper a compact Slow-Wave Substrate Integrated Waveguide (SW-SIW) is presented. The scale reduction is done using the Half-Mode SIW method which reduce the lateral dimension of the SIW into the half, along with the three layer Slow-Wave SIW method presented in a previous research paper. Combining these two methods show that the overall scale of the SIW is significantly reduced without...
Here in this article we propose a new design of Slow-Wave Substrate Integrated Waveguide (SW-SIW). The proposed design besides the miniaturization have the advantages of being low loss and Wide-Band. The reflection coefficient is decreased between 5dB and 10dB, the Band Width of the new transmission is almost 16.6GHz, the miniaturization is of 38% very slightly reduced from previous published works...
A compact Substrate Integrated Waveguide (SIW) Leaky-Wave Antenna (LWA) is proposed. Internal vias are inserted in the SIW in order to have narrow walls, and so reducing the size of the SIW-LWA, the new structure is called Slow Wave — Substrate Integrated Waveguide — Leaky Wave Antenna (SW-SIW-LWA), since inserting the vias induce the SW effect. After designing the antenna and simulating with HFSS...
A novel tri-band slot antenna fed by a microstrip line with rectangular tuning stub. The proposed antenna is intended for Long Term Evolution (LTE), in which the antenna covers the three bands: 758–865 MHz, 1510–1940 MHz, and 2488–2740 MHz. The antenna gives respectively 13%, 24% and 9.6% of impedance bandwidth for the upper bands considering −10dB matching criteria. The slot antenna gives nearly...
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