Along with the introduction of the concept of dual-channel communication, we utilized the finite-difference time-domain (FDTD) method to simulate and measure the radiation pattern under certain plasma densities and plasma collision frequencies. Results show that under certain settings, the radiation pattern of a plasma antenna resembles that of a metallic antenna. In contrast to a metallic antenna, a plasma antenna possesses other functionalities, such as dynamic reconfiguration and digital controllability. The data from simulation are similar to the measurement results, indicating that column plasma antenna can realize dual-channel communication. This work confirms the viability of realizing dual-channel communication by column plasma antenna, which adds a new but promising method for modern intelligent communication.
This paper focuses on the application of plasma as wireless antenna. In order to reveal the radiation characteristics of column plasma antenna, we chose the finite-difference timedomain (FDTD) numerical analysis method to simulate radiation impedance and efficiencies of each channel for a few sets of plasma densities and plasma collision frequencies. Simulation results demonstrate that a plasma antenna shares similar characteristics with a metallic antenna in radiation impedance and efficiency of each channel when an appropriate setting is adopted. Unlike a metallic antenna, a plasma antenna is capable of realizing such functions as dynamic reconfiguration, digital control and dual-channel communication. Thus it is possible to carry out dual-channel communication by plasma antenna, indicating a new path for modern intelligent communication.
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