Design of Capacitive Coupled Log Periodic Dielectric Resonator Antenna for X Band Applications

In this paper, a capacitive coupled Dielectric Resonator Antenna (DRA) array with log periodic method is explored experimentally for X-band applications. The incidence free DRA series consists of seven rectangular Dielectric Resonators (DRs). For both DRA and MPA arrays, a series fed microstrip line was used. In this work, Log Periodic Microstrip Patch Antenna (LPMPA) and Log Periodic Dielectric Resonator Antenna (LPDRA) arrays have been designed and realized, and the performance characteristics such as return loss, VSWR, gain, and bandwidth are simulated and validated experimentally. The LPMPA antenna is in active state from 10.2 GHz to 12.9 GHz with a bandwidth of 2.7 GHz and a gain of 8.55 dB. The LPDRA antenna is in active state from 7.3589 GHz to 12.1060 GHz with an increased bandwidth of 4.7474 GHz and a gain value of 8.53 dB. The corresponding performance characteristics are presented at the end. © 2022, Electromagnetics Academy. All rights reserved.