References
Ellis, M. S., Zhao, Z., Wu, J., Ding, X., Nie, Z., & Liu, Q. H.
(2016). A novel simple and compact microstrip-fed
circularly polarized wide slot antenna with wide axial ratio
bandwidth for C-band applications. IEEE Transactions on
Antennas and Propagation, 64(4), 1552-1555.
[2]. Fan, S. T., Yin, Y. Z., Lee, B., Hu, W., & Yang, X. (2012).
Bandwidth enhancement of a printed slot antenna with a
.
pair of parasitic patches. IEEE Antennas and Wireless
Propagation Letters, 11, 1230-1233.
[3]. Ibrahim, A. A. & Shubair, R. M. (2016, November).
Reconfigurable band-notched UWB antenna for cognitive
radio applications. In Microwave Symposium (MMS), 2016
th 16 Mediterranean (pp. 1-4). IEEE.
[4]. Jackson, D., & Alexopoulos, N. (1985). Gain
enhancement methods for printed circuit antennas. IEEE
Transactions on Antennas and Propagation, 33(9), 976-
987.
[5]. Jan, J. Y. & Wang, L. C. (2009). Printed wideband
rhombus slot antenna with a pair of parasitic strips for
multiband applications. IEEE Transactions on Antennas and
Propagation, 57(4), 1267-1270.
[6]. Kokotoff, D. M., Waterhouse, R. B., Birtcher, C. R., &
Aberle, J. T. (1997). Annular ring coupled circular patch with
enhanced performance. Electronics Letters, 33(24), 2000-
2001.
[7]. Le, T. T. & Park, H. C. (2014). Very simple circularly
polarised printed patch antenna with enhanced
bandwidth. Electronics Letters, 50(25), 1896-1898.
[8]. Sze, J. Y. & Chen, W. H. (2011). Axial-ratio-bandwidth
enhancement of a microstrip-line-fed circularly polarized
annular-ring slot antenna. IEEE Transactions on Antennas
and Propagation, 59(7), 2450-2456.
[9]. Sze, J. Y., Wang, J. C., & Chang, C. C. (2008). Axial-ratio
bandwidth enhancement of asymmetric-CPW-fed
circularly-polarised square slot antenna. Electronics Letters,
44(18), 1048-1049.
[10]. Zhou, C. & Cheung, S. W. (2017). A Wideband CP
Crossed Slot Antenna using 1-l Resonant Mode with Single
feeding. IEEE Transactions on Antennas and Propagation,
65(8), 4268-4273