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- Title
Super‐UWB MIMO Antenna With Dual Band‐Notched and High Gain.
- Authors
Rahim, Sajjad; Elobied, Abubaker Ahmed; Huang, Wei; Yang, Xue‐Xia
- Abstract
A 2 × 2 multiple‐input multiple‐output (MIMO) antenna with super‐ultra wideband (super‐UWB), dual band‐notched characteristics and high gain is proposed. The antenna element consists of a circular slot shape radiator fed by a tapered feedline on the top side of the substrate, whereas defected ground structure (DGS) is etched on the bottom ground plane. The DGS and tapered feedline has been designed to produce the super‐UWB performance. Dual‐band notch is achieved by etching a J‐shape slot in the radiator and an I‐shape slot at the edges of the ground plane. The dual‐band notch prevents the electromagnetic interference allocated for other wireless applications. High isolation is realized by incorporating a plus‐shape decoupling structure with four small arm shape stubs at the center of the ground plane. A prototype was fabricated to verify the simulated and measurement results. The proposed design achieves a super‐ultra wide bandwidth of 165% (3.4 ∼ 35 GHz), isolation of 21 dB, and a peak gain of 13 dBi. The notched bands are at 6.6 and 10 GHz. The envelope correlation coefficient is less than 0.01. The overall size of the MIMO design is 0.58λ0L × 0.34λ0L (λ0L is the free‐space wavelength at the lowest operating frequency). Key Points: A 2 × 2 super‐ultra wideband (super‐UWB) multiple‐input multiple‐output antenna is proposed for dual band‐notched characteristics and high gainDefected ground structure and tapered feedline play an important role in achieving the super‐UWB performanceThe proposed design achieves a maximum gain of 13 dBi with the lowest envelope correlation coefficient of 0.015
- Subjects
ANTENNAS (Electronics); ULTRA-wideband antennas; ELECTROMAGNETIC interference; FIREARMS; STATISTICAL correlation; RADIATORS
- Publication
Radio Science, 2022, Vol 57, Issue 11, p1
- ISSN
0048-6604
- Publication type
Article
- DOI
10.1029/2022RS007501