(Nano Telecommunication) Efficiency of a classic nanotube antenna of order -90dB (PhD in nano-microelectronics)
Researcher and author: Dr. ( Afshin Rashid)
Note: The efficiency of a classic nanotube antenna is -90dB, which will be due to resistance losses.
However, the dimensions of the antenna and the nanosystem or nanosensor set, operating frequency, power losses, range and dimensions of the sensor network, the structure and facilities of the power supply system and the physical communication platform between different parts of a nanosystem, major factors and parameters Each of which is a determinant and determines the ability to build and operate the final system. A network of communication nanoparticles can cover a wider area and perform more network processing . In addition, there are several nanocommunication technologies that require the use of external excitation and measurement to work. Wireless communication between the nano-network and micro and macro devices and equipment can meet this need.
In general, in order to receive the electromagnetic wave in space, the dimensions of the antenna must be in the order of the size of the input wavelength to its surface. Due to the very low dimensions of nano-sensors, nano-antennas need a very high operating frequency to be usable. The use of graphene greatly helps to solve this problem. Wave propagation velocities in CNTs and GNRs can be up to 100 times slower than vacuum velocities, depending on the physical structure, temperature and energy. Accordingly, the resonant frequency of graphene-based nano-antennas can be twice as low as nano-carbon nano-antennas. It has been mathematically and theoretically proven that quasi-metallic carbon nanotubes can emit terahertz radiation when a time-varying voltage is applied to their sides. Despite the possibilities of making nanotubes with a length of several centimeters, it is possible There are electric conductors with a length to width ratio of 7 ^ 10 . Nanotube antennas at first glance give us the impression that it is similar to the dipole antenna, which is designed in small dimensions . But this is not the case in the main theory of dipole antennas for determining the current distribution on the antenna, where the dipole radius is greater than the skin depth and also the resistance losses are so small that they can be ignored.
Conclusion :
The efficiency of a classic nanotube antenna is -90dB, which will be due to resistance losses.
Researcher and author: Dr. ( Afshin Rashid)
PhD in Nano-Microelectronics