Wideband circularly polarized square slot antenna with an annular patch

Shirzad, Hamed, Shokri, Majid, Amiri, Zhaleh, Asiaban, Somayeh and Virdee, Bal Singh (2013) Wideband circularly polarized square slot antenna with an annular patch. Microwave and Optical Technology Letters, 56 (1). pp. 229-233. ISSN 0895-2477

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Abstract / Description

This article presents a novel and compact circularly polarized square slot antenna (CPSSA) that operates across 2.93–11.43 GHz with an impedance bandwidth of 118% for VSWR ≤ 2. This makes the antenna feasible for UWB applications requiring high data rate transmission. The antenna with an annular radiation patch is fed through a coplanar waveguide and includes two inverted-L shaped ground arms at two opposite corners of the slot to excite two orthogonal resonant modes for circular-polarization (CP) radiation. A semicircular stub is embedded in the feed-line to enhance its impedance bandwidth. The antenna exhibits CP bandwidth of 22.2% across 4.87–6.09 GHz, which incorporates the WLAN band. In addition, the antenna has a significantly smaller volume of 25 × 25 × 0.8 mm3. The measured and simulated results confirm the usefulness of the antenna for practical applications.

Item Type:	Article
Uncontrolled Keywords:	slot antenna; ultrawideband; circular polarization
Subjects:	600 Technology > 620 Engineering & allied operations
Department:	School of Computing and Digital Media
Depositing User:	Bal Virdee
Date Deposited:	22 Oct 2015 17:37
Last Modified:	04 Jun 2020 11:51
URI:	https://repository.londonmet.ac.uk/id/eprint/808

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