(Nano Telecommunication) Nano Rectenna Rectenna Power transmission in the microwave band

Note: It should be mentioned that Rectna  has been studied in recent years, especially in the matter of power transmission in the microwave band. For example, in theory,  for a single frequency of 9.2 GHz, more than 10% efficiency is predicted  .

Of course, this is the fact that the practical efficiency of making these materials may  be slightly different and should be determined in practice. The dipole antenna with  linear polarization and 2/λ length, which has a relative bandwidth of 11%,  will be able to collect about pW 75.2. For this reason, if  using an antenna with double polarization, the power of pW 5.5 will be obtained. Due  to the low reception power of each independent antenna, it is customary to use antenna arrays  in this cell, which has its own rules and methods  .

One of the issues that has not been well resolved in nanotechnology  is how to  establish an electrical connection between nanoelectronic equipment and the macroscopic world without  losing the capabilities of these nano elements.  One of these fields and new functions of nano technology are nano antennas,  which are used  in various fields such as nano sensors, nano communication networks  , electric energy production and other similar topics, and as one of the fields of today The development of nano technology is discussed.  At the nanoscale, graphene-based antennas  are used to transmit EM waves. Graphene is a very thin monoatomic sheet  of confined carbon atoms placed on a crystal lattice  . Due to the very small dimensions of nano sensors, nano antennas  need to have a very high working frequency to be usable. However, the use of  graphene helps to solve this problem to a great extent. Due to the development of the technology of manufacturing equipment in nano dimensions, the possibility of making nano antennas and  using them in various applications has been provided. Communication between nano devices is a fundamental challenge related to the development of nano antennas and corresponding electromagnetic receivers.  Reducing the size of the  traditional  antenna to hundreds of nanometers leads to  very high performance frequencies .  At THz band frequencies, the very large bandwidth available results in much higher path loss than in lower frequency bands. 

Conclusion:

It should be mentioned that Rectna  has been studied in recent years, especially in the issue of power transmission in the microwave band. For example, in theory,  for a single frequency of 9.2 GHz, more than 10% efficiency is predicted  .