Triple-Ultra Wideband Rectangular Dielectric Resonator Antenna for 5G/6G/mm-wave Applications

A high-gain rectangular dielectric resonator antenna (DRA) with various frequency band operations is the suggested design. The frequency bands it covers include Ku, K, Ka, Q, and V bands. To improve performance, the antenna has two well-placed circular and rectangular cuts on its DGS, as well as a microstrip feed. These design components help the antenna be suited for high-frequency applications by improving impedance matching, controlling current distribution, and increasing bandwidth. The antenna operates ideally in each of the aforementioned frequency bands thanks to a comprehensive investigation of the realized gain, impedance matching, and radiated electric fields. This antenna is especially effective because of its high gain. Three resonant frequencies of 14.9GHz,19GHz, and 28.2GHz were found. Good impedance matching is seen at the operating frequencies at 14.9GHz S11 = -21.45 dB covering a frequency of 13.87 to 15.9GHz, its bandwidth is 13.6%, at 19GHz S11=39.87dB covering a frequency of 18.19GHz-23.38GHz its bandwidth is 27.31%, and at 28.2 GHz S<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> = - 37.78dB covering a frequency of 26.69GHz to 48.98GHz its bandwidth is 79.04%, a gain of 7.12dB at 14.9GHz, 6.69dB of 19GHz, and 6.55dB at 28.2GHz, and radiation efficiency was found to be more than 92.48% within the targeted working frequency spectrum 13.87 to 15.9GHz, more than 93.58% within the targeted working frequency spectrum of 18.19GHz-23.38GHz and more than 96.97% within the targeted working frequency spectrum of 96.78%. This antenna is especially well-suited for applications where dependable, high-performance operation is essential, such as satellite communications, military aircraft, defense tracking systems, and radar communication systems.