High gain spherical DRA operating on higher-order mode excited by microstrip patch

Abstract

This paper proposed a high gain spherical dielectric resonator antenna (DRA) operating on higher-order mode excited by microstrip patch. A microstrip patch was used to excite TE n01 mode on a dielectric sphere. The excited dielectric sphere operates as higher-order mode spherical DRA with high gain. Impedance matching method for conventional microstrip patch could be applied to the proposed antenna. Size minimization method for the excitation microstrip patch was also described on this paper. A prototype antenna operating on TE 301 mode at 5.8 GHz was fabricated by a ceramic dielectric material, which dielectric constant is 13, and showed the peak gain of 9.03 dBi.

Wide-Angle Scanning Phased Array Antenna using High Gain Pattern Reconfigurable Antenna Elements

“…To demonstrate the scanning performance of a phased array antenna composed of the PRA elements based on the guideline, we use a three-directional pattern reconfigurable high gain antenna model proposed by our research group 19,29 . The concept of wide-angle scanning phased array antenna using three-directional PRA elements was presented in before 11 .…”

“…As the resonant frequencies of the microstrip patch and the dielectric sphere are well matched, the input impedance and high gain characteristic show good properties. It means that since the resonant frequency of the dielectric sphere is fixed by its structure, the impedance matching method for the microstrip patch can be applied to this SDRA, thereby the size of the microstrip patch can be miniaturized 29 . Moreover, since the spherical dielectric is symmetric and the magnetic field distribution of the resonant mode is symmetric, as the microstrip patch shifts, the magnetic field distribution rotates and the beam tilting phenomenon occurs.…”

“…When the PRA elements designed under the guideline are used, the array antenna can achieve the desired scanning performance by dividing the scanning range into several subspaces. To achieve a scanning range of in accordance with the guideline, we used a high gain PRA model proposed by our research group 19,29 . The proposed high gain PRA model can reconfigure its beam pattern in three directions using a reconfigurable switching network and the size is 0.53.…”

Spherical Dielectric Resonator Antenna for 5G Application

“…The 5G technology offer the channel aggression and higher channel capacity with higher data rate. Published cellular designs have been focused on 3G/4G technology [5] [6]. The 5G network support two sets.…”

Dual-mode dielectric resonator antenna and array fed by planar slot

“…Compared with conventional microstrip antennas, dielectric resonator antennas have many attractive advantages, such as light weight, low-loss and high radiation efficiency due to the lack of surface wave. These favorable characteristics make them attractive for high-performance wireless applications from low-frequency to very high-frequency bands and from PCB to on-chip applications [1,2,3,4,5,6].…”