Effect of ionized plasma medium on the radiation from a RITMA structure on ferrite substrate

Pramana

D Bhatnagar2²  V Bhardwaj¹  V K Tiwari²  K B Sharma¹  J S Saini² 

[1] Department of Physics, S.S. Jain Subodh P.G. College, Jaipur 302 004, India$$;Microwave Laboratory, Department of Physics, University of Rajasthan, Jaipur 302 004, India$$

关键词: Microstrip antenna;    plasma medium;    hydrodynamic theory.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

This paper presents theoretical investigations on the radiation properties of a right isosceles triangular microstrip antenna (RITMA) printed on a magnetized ferrite substrate Ni0.62Co0.02Fe1.948O4 in the presence of ionized plasma medium. The theoretical study on RITMA structure in free space is carried out in TM11 mode of excitation by applying cavity model-based modal expansion technique while hydrodynamic theory is used for its analysis in plasma medium. By varying the bias magnetic field, far-field radiation patterns in free space and plasma medium are obtained which in turn are applied in computing radiated power, directivity, quality factor and bandwidth of antenna. It is found that the presence of plasma medium affects the performance of RITMA structure significantly.

【 授权许可】

Unknown