Circularly Polarized Slot Antenna for wireless Applications

Abstract

This letter presents a new design for a circularly polarized square slot antenna with an enhanced impedance bandwidth. The antenna structure includes a pair of inverted-L grounded arms, around two opposite corners which can result the CP bandwidth of the proposed antenna at 5.14-7.78 GHz .The designed Circularly  Polarized Slot Antenna with size 25 mm (length) ×25mm (width) ×0.8 mm (height) is greatly improved for achieving a significantly enhanced impedance bandwidth of 2–13 GHz with VSWR  ≤  2. The simulation results have been showed that using inverted-L grounded arms, circular and strip patches are increasing the CP bandwidth and reduce the size of the proposed antenna.

Keywords

• slot antenna,circular polarization,wireless applications

References

1. Javad Pourahmadazar, Ch. Ghobadi, J. Nourinia, Nader Felegari, and Hamed Shirzad, Broadband CPW-Fed Circularly Polarized Square Slot Antenna with Inverted-L Strips for UWB Applications. IEEE Antenna Wireless Propag. Lett., vol. 10, pp. 369—372, 2011.
2. Jia-Yi sze, C-I. G. Hsu, Z-W.Chen, and C-C Chang, Broadband CPW-fed circularly polarized square slot antenna whit lightening shaped feed line and inverted-L grounded strips. IEEE Trans Antenna Propag., vol. 58, no .3, pp. 973—977, Mar. 2010.
3. M.-J. Chiang ,T.-F. Hung, and S.-S. Bor.,―Dual-band circular slot antenna design for circularly and linearly polarized operations,‖ Microw.Opt. Technol. Lett., vol. 52, no. 12, pp.2717–2721, Dec. 2010.
4. Badamchi, Z. and Zehforoosh, Y. (2015), Switchable single/dual band filtering UWB antenna using parasitic element and T-shaped stub wave cancellers. Microw. Opt. Technol. Lett., 57: 2946–2950.
5. Sefidi, M., Zehforoosh, Y. and Moradi, S. (2015), A novel CPW-fed antenna with dual band-notched charectrestics for UWB applications. Microw. Opt. Technol. Lett., 57: 2391–2394.
6. Siahcheshm, A., Nourinia, J., Zehforoosh, Y. and Mohammadi, B. (2015), A compact modified triangular CPW-fed antenna with multioctave bandwidth. Microw. Opt. Technol. Lett., 57: 69–72.
7. Beigi, P., Nourinia, J., Zehforoosh, Y. and Mohammadi, B. (2015), A compact novel CPW-fed antenna with square spiral-patch for multiband applications. Microw. Opt. Technol. Lett., 57: 111–115.
8. Zehforoosh, Y. and Sedghi, T. (2014), A CPW-fed printed antenna with band-notched function using an M-shaped slot. Microw. Opt. Technol. Lett., 56: 1088–1092.

9. Hadi Baghali, Yashar Zehforoosh, Javad Nourinia, NOVEL SUPER WIDE BAND ANTENNA WITH WLAN/WiMAX BAND REJECTION AND COMPACT SIZE,International Journal of Electronics, Mechanical and Mechatronics EngineeringVol.3 Num 3 pp.621-624