A Frequency Tunable Dielectric Resonator Antenna with Reduction of Cross Polarisation for Wi MAX and Sub 6 GHz 5G Applications

Abstract

A frequency Tunable (mechanical tuning) Linearly Polarized (TLP) rectangular Dielectric Resonator Antenna(DRA) coupled with a horizontal/vertical-slot and excited with circular-ring type feed is investigated in this article.The frequency tunability (mechanical tuning) is achieved by the rotation of slot at different angles of the proposedstructure. Hence, two linearly polarized antennas have been proposed for different frequency bands such as Wi-MAX and Sub-6 GHz/5G, respectively, using slot variations (named as DRA-1 and DRA-2). TE 11δ mode has been excited in both the DRAs and confirmed by orientation of electric field inside the rectangular DRA. The measured -10 dB input impedance bandwidths of DRA-1 offer 21.60 % being centered at 2.87 GHz and the separation of co-polarized and cross-polarized field levels is above -24 dB in the broadside direction (xz-plane). Whereas DRA-2 offers measured -10 dB input impedance bandwidths of 23.03% being centered at 3.56 GHz having a separation of co-polarized and cross-polarized field levels are above -23 dB in the broadside direction (xz-plane). In addition, the proposed DRA-1 and DRA-2 show a maximum gain of 5.23 dBi and 4.75 dBi in broadside direction, respectively.

Investigating a Cylindrical Dielectric Resonator Antenna Fabricated with Li3MgNbO5 Microwave Dielectric Ceramic

“…Reduction in crosspolarization levels leads to improved signal purity and quality. 6 The higher co-pol values in Fig. 5 indicated that the designed CDRA effectively radiated the energy while minimizing the radiation in the orthogonal directions.…”

“…DRAs, as specialized configurations of dielectric resonators, offer distinct advantages over traditional metallic counterparts, including reduced geometric dimensions, diminished weight, and cost-effectiveness, and this has propelled the exploration and utilization of microwave dielectric materials to optimize the design and functionality of DRAs, addressing the increasing demand for miniaturized and high-frequency communication systems. [3][4][5][6][7][8] DRAs are characterized by their diverse configurations, with the choice of geometry playing a crucial role in the antenna's performance and adaptability. Among the various configurations, such as rectangular, cylindrical, semi-hemispherical, and triangular, the cylindrical geometry holds particular significance due to its unique characteristics.…”

A Review on the Effects of Thermal Inversions and Electromagnetic Fields on Cell Cultures and Wireless Communications

“…However, it is worth noting that they may pose challenges in practical implementation due to the complexity of their feeding network. Another potential alternative could be the use of a dielectric resonator antenna [103].…”

Investigation of flower‐shaped microstrip antenna using conformal mapping technique

“…where 2 and λ is the eigenvalue. Here, g and q are specified as the combination of m and n, and w g is the weighting function.…”

“…The antenna is an important component of any wireless apparatus. Different types of antennae, such as dipole, microstrip slot antenna, 1 leaky‐wave, dielectric resonator antenna, 2 Yagi‐Uda, and so on, have been widely used in wireless communication systems. Microstrip antenna (MA) has become popular and widely used as an efficient radiator due to its reliability, low weight, and integrability with solid‐state devices 3–6 .…”