Nano Telecommunication ( MIM Nano Antenna)
Researcher and author: Dr. ( Afshin Rashid)
Note: The conversion of solar light energy absorbed by the nano-antenna is done by a suitable rectifier. Suitable diodes for this frequency range are 12MIMs.
In the solar rectane system, millions of nano-antennas are placed next to each other with a suitable rectifier , and each of them generates electricity separately using sunlight. This diode must be able to operate at frequencies above 30 terahertz. Schottky diode , which is 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 in the infrared and visible frequency range due to its femtosecond tunneling time and dramatic increase in response speed . Because nano-antennas have the ability to absorb a wide angle, evenif the sun is inclined to the surface of the solar panel, their efficiency is up toSignificantly maintained. The system can also absorb energy radiated from the ground, or ground radiation, caused by the sun's daily radiation to the earth's surface, occurring at lengths of 10 micrometers , or frequencies of about 90 terahertz, for this reason . Nanoantennas of the solar recton system can also generate electricity by collecting this radiation during the night or in bad weather conditions .
The combination of optical antennas with a suitable rectifier system, called Rectenna for short, has been introduced in recent years to convert the sun's light energy into electrical energy, and is being rapidly developed and researched. While the efficiency of common solar cells on the market is around 30% at best, it yields two to three times that amount for rectangles. It should be noted that Rectna 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. Dipple antenna with Linear polarization and length 2 / λ, which has a relative bandwidth of 11%, will be able to collect about 75.2 pW . 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 :
The conversion of light energy of the sun, which is absorbed by the nano-antenna, is done by a suitable rectifier. Suitable diodes for this frequency range are 12MIMs.
Researcher and author: Dr. ( Afshin Rashid)
PhD in Nano-Microelectronics