Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth

Abstract

Conical and cylindrical dielectric resonator elements are vertically stacked and excited by a simple coaxial monopole. Compared to all earlier configurations, the proposed geometry significantly improves the impedance bandwidth. The ultrawideband response is enhanced due to the multiple resonances occurring by the suggested hybrid antenna. The footprint area of the antenna is only 63.6 mm 2 or 25.44×10 −3 λ 2 o at the lowest operating frequency. The performance of the antenna is verified experimentally and numerically. Presented results show that the proposed hybrid monopole-DRA has a measured impedance bandwidth up to 148.6% (S 11 < −10 dB) along with consistent monopole-like radiation patterns and peak gain of 7.14 dBi. With such properties, the proposed hybrid monopole-DRA can be used in different ultra-wideband wireless applications and as wideband electromagnetic interference (EMI) sensors.

Super‐wideband multi‐input–multi‐output dielectric resonator antenna

“…For the applications of millimetre wave ranges (around 30 GHz), the size of the proposed antenna is larger in comparison to the others operating at 30 GHz so may not be suitable for the system-inpackage applications. However, other performance parameters can allow the antenna to be utilised in the applications of 7-20 GHz like fixed and mobile satellite communication, aeronautical radio navigation, radiolocation, earth exploration satellite, space research 21.3, 24 GHz automotive radar systems [42], 24.25-27.5 GHz band of 5G applications [43], satellite communication in the range 30-35 GHz and as wideband electromagnetic interference sensor [29]. The detailed discussion about the applications of antenna can be found in [33,42].…”

“…Earlier, a stacked frustum shaped DR excited by a fractal-monopole was implemented with the ultra-wideband response ranging from 2.5 to 40 GHz [3]. A conical DR has also been stacked with the annular cylinder for obtaining the ultrawideband response in the frequency range 5.1 − 34.6 GHz [29]. The stacking and excitation with the fractal monopole makes the antenna structure complex.…”

“…The stacking and excitation with the fractal monopole makes the antenna structure complex. Hence, the proposed antenna geometry exhibits the advantage of simplicity over the other antennas reported in [3,29].…”

Design of Compact Filtenna Based on Capacitor Loaded Square Ring Resonator for Wireless Applications

“…For conventional RF systems, they are generally built independently and linked by a 50 or 75 Ω transmission line, which not only raises system volume but also can degrade its efficiency due to mismatch and additional insertion loss induced by interconnections. Recently, researchers have suggested a kind of co-designed filtering antenna that has antenna and filter functions simultaneously with a small dimensional size to solve this issue [1][2][3][4].…”

A Filtering Dielectric Resonator Antenna With High Band-Edge Selectivity

“…Dielectric materials can be used as radiators of antenna, which are called dielectric resonator (DR) antennas (DRAs) [9]. DRAs have attracted much attention owing to their advantages such as low loss, high efficiency and easy excitation [10,11]. Recently, many filtering dielectric resonator antennas have been proposed [12][13][14][15][16].…”