A tri‐band shared‐aperture antenna combining two sub‐6G and one millimeter‐wave bands with shared feeding port for 5G/B5G applications. Issue 7 (1st April 2022)

• Record Type: Journal Article
• Authors: Yang, Shilin; Xu, Jun; Yu, Zhiqiang; Zhou, Jianyi
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 7(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-04-01
• Subjects: large frequency ratio -- shared‐aperture antenna -- structure reuse efficiency -- substrate integrated waveguide -- tri‐band microstrip line to SIW transition; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23180
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: A tri‐band shared‐aperture antenna operating at both the sub‐6G and millimeter‐wave bands is proposed for 5G/B5G communications. It is small in size owing to the structure sharing technique. Four longitudinal slots are etched on the top of a substrate integrated waveguide (SIW), forming a millimeter‐wave antenna operating at 28 GHz. Meanwhile, the outer conductor of the entire SIW is used to realize a monopole antenna that can operate at 3.5 and 4.9 GHz, respectively. The structure reuse efficiency of the monopole radiating area is about 80%. A tri‐band microstrip line to SIW transition is proposed to excite different transmission modes in the sub‐6G and millimeter‐wave bands, thus, realizing the proposed large frequency ratio tri‐band antenna with a single shared port. A prototype of the proposed antenna is fabricated and measured, and the measured results agree well with the simulated ones, validating the correctness of this design.