S. Vergerio

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Mobile communication systems needs higher and higher transfert data rate. MIMO technology promises a linear increase of capacity in function of the minimum antenna number in transmission and reception. In order to test if these performances can be actually met in mobile communications, we propose here two MIMO antenna systems made of two PIFA elements in a(More)
MIMO systems require the implementation of multiple antennas at the mobile well adapted in both electromagnetic performances and decorrelation. We propose here a design of two PIFA elements working in the 4.7-6.2 GHz band and placed in orthogonal or in parallel configuration on a ground plane whose dimensions are compatible with a mobile phone. Its(More)
MIMO technology promises a linear increase of capacity in function of the minimum antenna number at the transmitter and at the receiver. In order to test if these performances can be actually met in mobile communications, we proposed here a study of MIMO capacity in urban cellular environment at 2 GHz thanks to an efficient ray propagation model. We have(More)
MIMO technology promises a linear increase of capacity in function of the minimum antenna number at the transmitter and at the receiver. In order to test if these performances can be actually met in mobile communications, we propose here a study of MIMO (Multiple Input Multiple Output) capacity in urban cellular environment at 2 GHz with a help of an(More)
Closeness of the radiating elements on a mobile terminal as mobile phone generates problems of coupling. The study proposed here is about coupling and diagram correlation effects on MIMO performance in UMTS band. We used a couple of planar inverted-F antennas in parallel, placed on a ground plane whose dimensions are compatible with a mobile phone. For an(More)
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