Electrically small antenna design: from mobile phones to implanted sensors
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The main purpose of the System Fidelity Factor (SFF) is to incorporate frequency and time domain characteristics of an antenna system into a comparison method for ultrawideband (UWB) antennas. The SFF is an interesting tool because both simulations and mea ...
Institute of Electrical and Electronics Engineers2011
In this work, we consider the multiple antenna systems in which a large number of antennas occupy a given physical volume, and investigate the behavior of the capacity when increasing the number of antennas. In this regime the assumptions of the standard m ...
It is well-known that multiple transmit and receiving antennas can significantly improve the performance of wireless networks. The design of good modulation schemes for the model of multiple antenna wireless transmission in a fast fading environment (e.g., ...
Recent advances in multi-hopping are extended to relay networks having multiple antennas and multiple sources. As for the single-antenna and single-source case, one can achieve the ergodic capacity of wireless relay networks with phase fading if the relays ...
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2004
In this thesis we study the properties of optical wire antennas. As experimental method for our investigations we use apertureless near-field optical microscopy. This technique achieves high spatial resolution well beyond the diffraction limit by utilizing ...
The effect of substrate permittivity on UWB antenna radiation is studied. Microstrip and CPW-fed UWB monopoles are designed using substrates with different dielectric constants. The radiation patterns are measured. The transfer function of a two identical ...
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009
The need of efficient antennas in handheld terminals has increased drastically due to the fast development of wireless services. These antennas should be small, efficient and cover multiple frequency bands. But efficiency in antennas is limited by fundamen ...
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009
The EU Framework Programmes (FPs) foster the collaboration and the research structuring across Europe. In FP6, the Antenna Centre of Excellence (ACE) is a Network of Excellence project created to improve the efficiency of antenna research in Europe. Starti ...
