6. H. Yi-Keng, et al., A 60 GHz broadband low-noise amplifier with variable-gain control in 65 nm CMOS, IEEE Microwave Wireless Compon Lett 21 (2011), 610-612. 7. T. Ming-Hsien, et al., Design of 60-GHz low-noise amplifiers with low NF and robust ESD protection in 65-nm CMOS, IEEE Trans Microwave Theory Tech 61 (2013), 553-561.ABSTRACT: An ultrawideband (UWB) multiple input and multiple output (MIMO) antenna having shared radiator with dual band rejection characteristics is presented in this article. The proposed antenna is based on the concept of dual polarization. The antenna consists of two tapered CPW feeds printed on one side of the substrate and a circular shared radiator on the other side. The radiator is shared between two antenna elements. High isolation between the antenna elements is achieved by introducing a rectangular slot in the circular radiator and an inverted Y-shaped stub on the ground plane at an angle of 458. The proposed antenna rejects the WiMAX and wireless LAN band of frequencies using elliptical split ring slots in the shared radiator. The diversity performance of UWB MIMO antenna is also studied. The antenna is fabricated on FR4 substrate and has a small size of 41 mm 3 41 mm. The simulated and measured results are in good agreement which demonstrate its potential use in UWB portable devices.
A compact printed 2 × 2 ultrawideband (UWB) multiple input multiple output (MIMO) antenna with a single circular patch as a common radiator for both the antenna elements is presented in this paper. A single circular patch is excited by two tapered CPW feeds for dual polarization. To improve the isolation between two ports, a rectangular slot of dimension L 1 × W 1 is created in the radiator. The UWB MIMO antenna has impedance bandwidth of 3-12 GHz with a isolation better than 17 dB between the two ports. The envelope correlation coefficient and the capacity loss are evaluated to ensure the good diversity performance of UWB MIMO antenna. The antenna has a compact size of 45 × 45 mm 2 and is fabricated on low cost FR4 substrate and measured using Agilent VNA. The simulated and measured results show that the proposed UWB antenna is good candidate for UWB MIMO applications.
A compact ultra-wideband (UWB) with wireless local area network (WLAN) rejection capability multiple input multiple output (MIMO) is presented in this paper. The proposed UWB MIMO antenna has very good isolation between antenna elements. It has the isolation better than 20 dB over the entire UWB band. The rectangular slots introduced in the ground plane in order to obtain good isolation. A λ/2 C-shaped slot is introduce in the radiator in order to have band reject characteristics. The proposed antenna is fabricated and measured to verify the present concept of design. The measured results are in good agreement with the simulated ones. The UWB MIMO antenna has a compact size of 40 mm × 40 mm. This compact size along with good UWB characteristics make this antenna good candidate for UWB MIMO systems.Index Terms -Ultra-wideband (UWB) antennas, Multipleinput multiple output (MIMO) antenna, high isolation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.