Endfire Substrate Integrated Dielectric Resonator Antenna With Dual-Beam Radiation for Millimeter-Wave Application

• Published in: IEEE antennas and wireless propagation letters Vol. 23; no. 5; pp. 1523 - 1527
• Main Authors: Shi, Jin, Guo, Yi, Zhao, Ruijing, Wu, Bowen, Chen, Yanyun, Zhang, Wei
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna radiation patterns; Circuit boards; Dielectric resonator antenna; Dielectric resonator antennas; Dielectrics; dual-beam; endfire antenna; Magnetic multilayers; Magnetic separation; Millimeter waves; millimeter-wave; Multilayers; Permittivity; Printed circuits; Radiation; Radio antennas; Resonators; substrate integrated; Substrates
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2024.3361558

A millimeter-wave (mm-wave) endfire substrate integrated dielectric resonator antenna is proposed to provide dual-beam radiation. The dual-beam radiation is caused by the multilayer rectangular dielectric resonator (DR) with metallic walls on both sides and air vias at the center, which are used to generate modified TE 13δ mode and adjust the distribution of E -fields, respectively. The metallic walls, air vias, DR and feeding line can all be implemented with a printed circuit board (PCB) process, which enhances the integration level of the endfire dielectric resonator antenna. The theoretical analysis of the dual-beam radiation is provided to guide the practical design. Compared with the state-of-the-art designs, the proposed antenna not only achieves dual-beam radiation in endfire dielectric resonator antenna but also exhibits the capability of substrate integration and high radiation efficiency. For demonstration, a dual-beam prototype is fabricated and measured. The proposed antenna shows dual-beam radiation with ±61° beam direction and more than 13 dB suppression at the endfire direction.