A Compact Slotted Patch Hybrid-Mode Antenna for Sub-6?GHz Communication

摘要

A compact hybrid-mode antenna is proposed for sub-6?GHz communication. The proposed antenna is composed of a slotted rectangular patch, a feeding dipole, and a balun. Three modes are sequentially excited in a shared patch to achieve a compact size. A prototype antenna with a major size of 0.48 λ0?×?0.31 λ0?×?0.16 λ0 (λ0 is the wavelength in the free space at the center of the operating frequency band) is fabricated and measured. The measured results demonstrate an impedance bandwidth of 56.87% from 2.97?GHz to 5.33?GHz and an average gain of approximately 8.00?dBi with 1?dB variation in the operating frequency band of 3.0–5.0?GHz. The proposed antenna can be an element for microbase stations in sub-6?GHz communication.