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Isolation between antennas in a multiantenna terminal plays an important role in the performance analysis of wireless systems. When comparing different methods for increasing isolation between the antennas, it is important to note that isolation depends strongly on antenna matching. The effect of matching on isolation can be removed by numerically matching two antennas simultaneously. The resulting...
We present design and simulations of a cylindrical electromagnetic cloak which is based on a method employing periodic meshes of transmission-line networks. The cloaked object can be a connected or non-connected mesh of inclusions composed of an arbitrary material. In the example case studied in this work, we cloak a cylindrical mesh of rods made of a perfect electric conductor. Since the period of...
The terahertz (THz) band is generally referred to as the electromagnetic spectrum between 0.1 and 10 THz. Because of its attractive features such as chemical specificity, penetration capability, non-ionisation, and wide bandwidth, this least explored frequency band has become the focus of many researchers. Currently the photoconductive antenna is widely used to generate THz waves. However, the THz...
In this paper, we have shown that it was still possible to get a very good diversity system gain for very closely spaced UMTS PIFAs (0.027 lambda0) positioned on the PCB of a small communicating object by using the neutralization technique. The goal is to see how efficient can be the neutralization technique when the radiators are separated by a very small distance or in other terms, how close can...
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