Compact High Gain Resonant Cavity Antenna With via Hole Feed Patch and Hybrid Parasitic Ring Superstrate

Duy-Ninh Dang,Chulhun Seo

doi:10.1109/access.2019.2950726

Duy-Ninh Dang, Chulhun Seo

Open Access

https://doi.org/10.1109/access.2019.2950726

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Abstract

A compact and high gain resonant cavity antenna (RCA) is investigated in this work. At first, a ray-tracing model and the full-wave analysis are presented to clarify the characteristics of RCA in cases of finite lateral size and inhomogeneous superstrate. In consequence, a novel compact, high gain, and wideband RCA is proposed. The RCA consists of a via hole feed patch and an array of hybrid parasitic rings fabricated on a superstrate. The via holes feed patch with a high radiation directivity significantly enhances the RCA’s gain. On another hand, the dimension and bandwidth of the RCA are improved by the hybrid parasitic ring superstrate which is constituted by non-periodic parasitic patch and rings. Finally, a prototype of the RCA is fabricated and measured. With only the dimension of $1.35\lambda _{0}\times 1.35\lambda _{0}\times 0.63\lambda _{0}$ , the peak gain of 15.8 dBi and 3 dB gain bandwidth of 10.7% are obtained.

Highlights

Compact microwave system with high performance is the trend of future technology, i.e., microwave power transmission, biomedical implant, and 5G handset devices
To measure the radiation pattern of resonant cavity antenna (RCA) as a function of angle, the prototype is rotated so that the transmitting antenna illuminates the prototype from different angles
In this work, the combination of the ray-tracing model and the full-wave solution illumines the characteristics of RCA in the case of finite reflecting surfaces

Summary

INTRODUCTION

Compact microwave system with high performance is the trend of future technology, i.e., microwave power transmission, biomedical implant, and 5G handset devices. The compact RCAs obtaining high gain and wideband require multi-superstrate layers [6], [15], [16], [18] or complex superstrate structures [8], [10], [14], [17] These RCAs have been focused on the study of novel feed patch and superstrate structures. Seo: Compact High Gain Resonant Cavity Antenna With via Hole Feed Patch and Hybrid Parasitic Ring Superstrate TABLE 1. The via hole feed patch achieves high gain and narrow beamwidth as well as easy to fabrication On another hand, the superstrate structures were dominantly investigated in the literature.

RCA WITH FINITE REFLECTING SURFACES

RESULTS AND DISCUSSION

CONCLUSION