An ultra‐wideband multiple‐input multiple‐output antenna with dual band‐notched characteristics. Issue 2 (11th November 2021)

• Record Type: Journal Article
• Authors: Bao, Sihui; Ren, Wu; Zeng, Qingyun; Xue, Zhenghui; Li, Weiming
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 2(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-11-11
• Subjects: multiple‐input multiple‐output (MIMO) -- notch band -- ultra‐wideband (UWB); Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.22979
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: In this paper, an ultra‐wideband multiple‐input multiple‐output antenna with dual band‐notched characteristics is proposed. The radiating element is an octagonal structure using a tapered microstrip line to feed. A multimode resonator is introduced on one side of the microstrip feed line to achieve dual band‐notched characteristics, which eliminates the interference of wireless local area network band and X satellite communication frequency band. By using a diamond‐shaped defect ground structure and extending a parasitic branch at the centre axis of the ground, the mutual coupling of the antenna is reduced to −20 dB. The proposed antenna has a compact size of 30 × 35 × 0.8 mm 3 . The measured results are in good agreement with the simulation results. The proposed antenna covers 3.1–10.6 GHz with dual notched‐band characteristics and the mutual coupling below −20 dB. The antenna has a good diversity performance as the envelope correlation coefficient <0.03. The antenna is suitable for ultra‐wideband communications.