A printed toothbrush-shaped antenna is proposed for millimeter wave communication. The designed antenna features with a compact size is 7 × 10 mm 2 , and satisfies the VSWR requirement less than 2.0 in the frequency band from 32 GHz to more than 38 GHz. Simulated and measured results for main parameters such as return loss, impedance bandwidth, and radiation patterns are also discussed herein. The study shows that modeling of such antennas, with simplicity in designing and feeding, can well meet millimeter-wave wireless communication.

In the recent research on cylindrical monopole plasma antenna excited by surface wave, many meaningful results about plasmas antenna, e.g. the analysis of physical characteristics, numerical calculation methods, software simulation, diagnosis of parameters have been obtained. But the precise model of monopole plasma antenna according to its three-dimensional structure has not been proposed yet. There are few papers concerning this topic in previous academic journals. This paper analyzes three-dimensional distributions of electric and magnetic fields around monopole plasma antenna. The related formulas and equations of the model are derived by applying molecular dynamic theories and Maxwell-Boltzmann equations. In addition, numerical simulation methods are employed to verify the validity of proposed model.