Matching Slot Role in Bandwidth Enhancement of SIW Cavity-Backed Slot Antenna

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Author(s)
Varnoosfaderani, MV
Lu, J
Zhu, B
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Wu Qun

Date
2014
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719978 bytes

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Herbin, China

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Abstract

A substrate-integrated waveguide (SIW) cavity-backed antenna with two slots on top of the cavity has been proposed in this paper. The bowtie slot is the main radiator of the cavity and a rectangular slot close to the feed point has been etched (to add extra resonance to enhance the bandwidth of the antenna in the desired frequency range). Tuning the rectangular slot improved the fractional bandwidth to 8%. A 7.9 dBi peak gain and a steady beam over the entire bandwidth are achieved. The FTBR (front to back ratio) of the antenna is more than 20 dBi. A standard PCB producing process has been used in order to manufacture the proposed antenna on a single layer substrate.

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Proceedings of 3rd Asia-Pacific Conference on Antennas and Propagation, APCAP 2014

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© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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Electrical and Electronic Engineering not elsewhere classified

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