Millimeter-Wave High-Gain SIW End-Fire Bow-tie Antenna

Dadgarpour, Abdolmehdi and Zarghooni, Behnam and Virdee, Bal Singh and Denidni, Tayeb A. (2015) Millimeter-Wave High-Gain SIW End-Fire Bow-tie Antenna. IEEE Transactions on Antennas and Propagation, 63 (5). pp. 2337-2342. ISSN 0018-926X

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Official URL: http://dx.doi.org/10.1109/TAP.2015.2406916

Abstract

This communication presents a high-gain bow-tie antenna that operates across 57–64 GHz for application in high data rate point-to-point communication systems. The proposed antenna consists of a pair of bow-tie radiators, where each radiator is etched on the opposite side of the common dielectric substrate and fed through substrate integrated waveguide (SIW) feed-line. The bow-tie radiators are arranged to cross each other symmetrically by tilting the feed-lines by 30◦ to enhance the antenna gain and to obtain the required radiation pattern. The antenna is loaded with a pair of double G-shaped resonators (DGRs) that are located in a region between the radiators and SIW to suppress the back-lobe level in the H-plane. Embedded in the E-plane of the antenna is an array of zero index metamaterial (ZIM) unit-cells whose purpose is to effectively confine the electromagnetic waves in the end-fire direction to enhance its gain performance. A prototype antenna was fabricated and its performance was measured to validate the simulation results. The proposed structure exhibits a gain of 11.8–12.5 dBi over the frequency range of 57–64 GHz with reflection coefficient less than −11 dB. In addition, the proposed antenna exhibits good cross-polarization, which is less than −17 dB in both E- and H-planes at 60 GHz.

Item Type: Article
Uncontrolled Keywords: bow-tie antenna, end-fire antenna, millimeter-wave antenna, zero-index metamaterial (ZIM)
Subjects: 600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Related URLs:
Depositing User: Bal Virdee
Date Deposited: 21 Oct 2015 10:36
Last Modified: 11 Oct 2016 08:43
URI: http://repository.londonmet.ac.uk/id/eprint/793

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