(Nano Tele communication) Proper placement of nano antenna in the power supply gap
Researcher and author: Dr. ( Afshin Rashid)
Note: By placing a suitable rectifier in the nano antenna power supply gap, the desired DC power is produced.
In the Rectenna solar system, millions of nano-antennas with a suitable rectifier are placed next to each other and each generates electricity separately using sunlight. The conversion of solar light energy absorbed by the antenna is done by a suitable rectifier. Suitable diodes for this frequency range are 12MIMs. This diode must be able to operate at frequencies above 30 terahertz. A Schottky diode , a semiconductor diode with low voltage drop and relatively fast response speed , has the ability to rectify and detect signals with a frequency of up to 5 terahertz. The MIM diode can be used as an alternative to the Schottky diode due to its femto second tunneling time and dramatic increase in response speed. Used in the infrared and visible frequency range.
Because nano-antennas have the ability to absorb a wide angle, their efficiency is maintained to a considerable extent even if the sun is inclined to the surface of the solar panel . The system can also absorb energy from the ground, or ground radiation from the sun's daily radiation to the earth's surface, at wavelengths of 10 micrometers , or frequencies of about 90 terahertz, which is why nano-antennas Solar rectum systems can generate electricity by collecting this radiation during the night or in bad weather conditions . At present, the diode and antenna structures used in the solar rectum are made using the electronic design method. This method though Manufacturing is expensive and time consuming to produce on a laboratory and research scale , but if these structures are produced in large volumes and with the proper method , they reduce the cost and speed of the manufacturing process. It should be noted that Rectenna Rectenna has been studied in recent years, especially in the field 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, the practical efficiency of making these devices may be slightly different and must be determined in practice. A dipole antenna with linear polarization and a length of 2 / λ, which has a relative bandwidth of 11%, will be able to collect about 75.2 pW . With Due to the low power reception of each independent antenna, the use of antenna arrays in this cell is common, which also has its own rules and methods .
Conclusion :
Optimal DC power is generated by placing a suitable rectifier at the nano antenna power supply slot.
Researcher and author: Dr. ( Afshin Rashid)
PhD in Nano-Microelectronics