ABSTRACT

In this paper, a novel, compact, low-profile miniaturized stacked Dielectric Resonator Antenna (DRA) for wideband applications is proposed. The design consists of two dielectric resonators of different dielectric constant stacked together. The Dielectric Resonators (DRs) are fabricated on the top side of the substrate (Taconic RF-35) with an inverted-trapezoidal patch as a feeding mechanism. The proposed configuration offers a wide impedance bandwidth of about 76.8%, covering the frequency range from 4.85 GHz to 10.88 GHz with TE_21δ mode and TE_23δ second higher-order mode being observed at the resonant frequencies of 6.14 GHz and 10.52 GHz, respectively. Peak gain of 8 dBi at 10.2 GHz is observed. The proposed antenna provides a wide impedance bandwidth, high radiation efficiency with smaller electrical size, and low profile of 0.19λ_g , where λ_g is the wavelength of the lower cut-off frequency.

摘要

在本文中，提出了一种用于宽带应用的新型、紧凑、薄型小型堆叠介质谐振器天线（DRA）。该设计由两个不同介电常数的介电谐振器堆叠在一起组成。介质谐振器 (DR) 制造在基板 (Taconic RF-35) 的顶侧，并以倒梯形贴片作为馈电机构。所提出的配置提供约 76.8% 的宽阻抗带宽，覆盖 4.85 GHz 至 10.88 GHz 的频率范围（TE _21δ模式和 TE _23δ）分别在 6.14 GHz 和 10.52 GHz 谐振频率下观察到第二高阶模式。在 10.2 GHz 时观察到峰值增益为 8 dBi。所提出的天线提供了宽阻抗带宽、高辐射效率和较小的电气尺寸，以及 0.19λ _g的薄型，其中 λ _g是较低截止频率的波长。