• Theoretical study of two-element array of equilateral triangular patch microstrip antenna on ferrite substrate

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      https://www.ias.ac.in/article/fulltext/pram/065/03/0501-0512

    • Keywords

       

      Microstrip array antenna; ferrite substrate; radiation properties; plasma

    • Abstract

       

      The radiation characteristics of a two-element array of equilateral triangular patch microstrip antenna on a ferrite substrate are studied theoretically by considering the presence of bias magnetic field in the direction of propagation of electromagnetic waves. It is found that the natural modes of propagation in the direction of magnetic field are left- and right-circularly polarized waves and these modes have different propagation constants. In loss-less isotropic warm plasma, this array antenna geometry excites both electromagnetic (EM) and electroacoustic plasma (P) waves in addition to a nonradiating surface wave. In the absence of an external magnetic field, the EM- and P-waves can be decoupled into two independent modes, the electroacoustic mode is longitudinal while the electromagnetic mode is transverse. The far-zone EM-mode and P-mode radiation fields are derived using vector wave function techniques and pattern multiplication approaches. The results are obtained in both plasma medium and free space. Some important antenna parameters such as radiation conductance, directivity and quality factor are plotted for different values of plasma-to-source frequency.

    • Author Affiliations

       

      K K Verma1 K R Soni1

      1. Microwave Laboratory, Department of Physics, Malaviya National Institute of Technology, Jaipur - 302 017, India
    • Dates

       
  • Pramana – Journal of Physics | News

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