Improving Gain and Efficiency of RDRA Antennas through the Integration of a Cylindrical Coaxial Dielectric for Multi-Frequency Applications


  • Hussein Turki Alateewe, Szilvia Nagy


Gain; Geometry of RDRA antenna; Coax: dielectric; inner conductor; outer conductor: S- Parameter; PEC ground plane; Multiple frequencies; radiation pattern.


Many lifestyle applications require various types of antennas, especially in the communication field. One such antenna used in this domain is the dielectric resonator antenna (DRA). In this article , we designed RDRA antenna with  coax : dielectric ,cylindrical inner conductor as well as outer conductor ,then we will use different types of frequencies in designing  RDRA antennas, such as(12;13;14;....) GHz, based on their S-parameters, gain, directivity, bandwidth, and voltage standing wave ratio (VSWR). We will enhance the gain and the characteristics of this antenna and explain the new design that used for enhanced gain and bandwidth enhancements in detail, including the use of high-dielectric-constant, PEC material for ground plane, adjusting resonant frequency. The Practical experiments utilize CST (Computer Simulation Technology) software to evaluate the mentioned parameters of DRA antennas. DRA antennas are known for their high radiation efficiency, small size, low profile, and lightweight, which can be improved by modifying certain elements or structures, thus reducing attenuation. To enhance S-parameters and gain, the suitable design of a DRA depends on the geometrical and material characteristics chosen. This approach enables us to achieve high gain, efficiency and acceptable results. Therefore, simulations of the antenna must consider these properties and characteristics, along with the effects of surface Plasmon waves on the DRA's properties. Adding different frequencies in new design with coaxial dielectrics of RDRA antenna were necessary enhance the results, leading to higher gain.


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How to Cite

Hussein Turki Alateewe. (2024). Improving Gain and Efficiency of RDRA Antennas through the Integration of a Cylindrical Coaxial Dielectric for Multi-Frequency Applications. International Journal of Intelligent Systems and Applications in Engineering, 12(22s), 54 –. Retrieved from



Research Article