Abstract
In this paper, we review antennas from the radio wave band to the optical band. The main characteristics of the antennas determining their operation are given. The class of nano-patch antennas (NPA) of the visible and near-infrared ranges is distinguished. The advantage of nano-patch antennas is the good directivity of the antenna radiation and the significant Purcell factor (>102 –103 ), while the technology for creating these antennas is quite simple. The paper also presents various types of photon radiation sources in NPA, among which molecular complexes, quantum dots and color centers in diamonds can be distinguished. On the basis of nano-patch antennas with quantum dots and color centers in nanodiamonds, it is possible to create sources of single photons with picosecond decay rates. The comparison of the characteristics of NPA depending on the shape of plasmon nanoparticles is presented.
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