(Nano Telecommunication) Dimensions of nano antenna and set of nano telecommunication systems
Researcher and author: Dr. ( Afshin Rashid)
Note: 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 are major factors and parameters that each One is decisive and determines the buildability and performance of the final system.
A nano-network is a nano- scale communication network between nano-devices. Nano-devices face certain challenges in performance due to limitations in the ability to process power management . Therefore, these devices are expected to perform simple tasks that require different and new approaches. In a molecular telecommunication system, the transmitter sends information by chemical molecules called information molecules, and after propagation in the environment, it is received by the telecommunication receiver and decoded. A network of communication nanoparticles can cover a wider area and perform more network processing . In addition, there are several nanotechnology technologies that require the use of external excitation and measurement to work. Wireless communication between nano-networks 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 :
Dimensions of antenna and nanosystem or nanosensor, operating frequency, power losses, range and dimensions of sensor network, structure and facilities of power supply system and physical communication platform between different parts of a nanosystem, are the main factors and parameters that each They are a determinant and determine the ability to build and operate the final system.
Researcher and author: Dr. ( Afshin Rashid)
PhD in Nano-Microelectronics