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Low profile pattern-switchable multibeam antenna consisting of four L-shaped microstrip lines

Zhang, Wei and Pal, Arpan and Mehta, Amit and Mirshekar-Syahkal, Dariush and Nakano, Hisamatsu (2018) 'Low profile pattern-switchable multibeam antenna consisting of four L-shaped microstrip lines.' IET Microwaves, Antennas and Propagation, 12 (11). pp. 1846-1851. ISSN 1350-2417

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Abstract

A multibeam antenna consisting of a set of four L-shaped microstrip line sections is presented for pattern switchable applications. A planar electromagnetic band gap substrate is implemented to reduce the antenna profile to λ ₂.₄₅ /35, where λ ₂.₄₅ is the free space wavelength at a design frequency of 2.45 GHz. An impedance matching network is integrated on the lowest layer below a ground plane. The microstrip lines have a resonant frequency of 2.45 GHz and are excited separately. When one of the strips is excited, the antenna generates a tilted beam with a gain of 8.6 dBi. By switching the excitation strip sequentially, a full azimuth beam steering is achieved. When the antenna is located above a large conducting reflector, the antenna maintains its performance. Thus, the antenna is a candidate for moving objects with high speed internet and vehicular tracking.

Item Type: Article
Uncontrolled Keywords: microstrip lines; multibeam antennas; photonic band gap; antenna radiation patterns; impedance matching; beam steering; UHF antennas; reflector antennas; frequency 2; 45 GHz; vehicular tracking; high speed Internet; conducting reflector; full azimuth beam steering; L-shaped microstrip lines; resonant frequency; impedance matching network; free space wavelength; antenna profile; planar electromagnetic band gap substrate; pattern switchable applications; pattern-switchable multibeam antenna
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 15 Sep 2018 18:59
Last Modified: 23 Sep 2022 19:28
URI: http://repository.essex.ac.uk/id/eprint/23020

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