Broadband Circularly Polarized Antennas with Improved Gain
关键词:
Broadband antenna, circularly polarized antenna, differentially-fed antenna摘要
A broadband circularly polarized (CP) antenna with improved gain is proposed. The broadband CP antenna consists of two folded off-center-fed dipoles. Due to the two-dipole configuration, the antenna gain is improved by almost 2 dB. It is shown by simulation and experiment that the broadband CP antenna achieves an impedance bandwidth of 52% (1.71-2.89 GHz) for reflection coefficient<-15 dB and an axial ratio (AR) bandwidth of 45% (1.75-2.73 GHz) for AR<3 dB. The average antenna gain is about 10 dBi. A differentiallyfed broadband CP antenna is also developed. Simulated and measured results show that the differentially-fed CP antenna fulfills an impedance bandwidth of 60% (1.53-2.83 GHz) for differential reflection coefficient <-15 dB and a 3-dB AR bandwidth of 44% (1.76-2.75 GHz). The average antenna gain is about 10 dBi. The gain-improved broadband CP antennas feature a simple planar configuration, which are suitable for applications in satellite/wireless communications.
##plugins.generic.usageStats.downloads##
参考
M. H. Rasekhmanesh, P. Mohammadi, and A. Piroutiniya, “A circularly polarized miniaturized patch array using combination of circle and rectangular lines in the sequential phase feed structure,” ACES Journal, vol. 32, no. 4, pp. 339- 344, Apr. 2017.
V. Rafiei, H. Saygın, and S. Karamzadeh, “Circularly polarized aperture-coupled microstripline fed array antenna for WiMAX/C bands applications, ” ACES Journal, vol. 32, no. 12, pp. 1117-1120, Dec. 2017.
J. Wu, Y. Yin, Z. Wang, and R. Lian, “Broadband circularly polarized patch antenna with parasitic strips,” IEEE Antennas Wirel. Propag. Lett., vol. 14, pp. 559-562, 2015.
Y. He, W. He, and H. Wong, “A wideband circularly polarized cross-dipole antenna,” IEEE Antennas Wirel. Propag., vol. 13, pp. 67-70, 2014.
J. M. Chen and J. S. Row, “Wideband circular polarized slotted patch antenna with a reflector,” IEEE Antennas Wirel. Propag. Lett., vol. 14, pp. 575-578, 2015.
R. L. Li, L. J. Pan, and Y. H. Cui, “A novel broadband circularly polarized antenna based on off-center-fed dipoles,” IEEE Trans. Antennas Propag., vol. 63, no. 12, pp. 5296-5304, 2016.
J. Zhuang, Y. Zhang, W. Hong, and Z. Hao, “A broadband circularly polarized patch antenna with improved axial ratio,” IEEE Antennas Wirel. Propag. Lett., vol. 14, pp. 1180-1183, 2015.
R. Xu, J. Y. Li, and W. Kun, “A broadband circularly polarized crossed-dipole antenna,” IEEE Trans. Antennas Propag., vol. 64, no. 6, pp. 4509- 4513, 2016.
H. Liu, Y. Liu, and S. Gong, “Broadband microstrip-CPW fed circularly polarised slot antenna with inverted configuration for L-band applications,” IET Microw. Antennas Propag., vol. 11, no. 6, pp. 880-885, 2017.
G. Feng, L. Chen, X. Wang, X. Xue, and X. Shi, “Broadband circularly polarized crossed bowtie dipole antenna loaded with parasitic elements,” IEEE Antennas Wirel. Propag. Lett., vol. 17, pp. 114-117, 2018.
R. Xu, J. Y. Li, K. Wei, and G. W. Yang, “A broadband slot antenna with unidirectional circularly polarized radiation patterns,” IEEE Antennas Wirel. Propag. Lett., vol. 16, pp. 317- 320, 2017.
W. Eisenstadt, R. B. Stengel, and B. M. Thompson, Microwave Differential Circuit Design Using Mixed-Mode S-Parameters. Boston, MA, USA: Artech House, 2006.
B. Li and X. Y. Liu, “A differentially fed implantable antenna with circularly polarization for biomedical telemetry,” IEEE International Conf. on Computational Electromagnetics (ICCEM), pp. 364-366, 2016.
D. J. Bisharat, S. Liao, and Q. Xue, “Circularly polarized planar aperture antenna for millimeterwave applications,” IEEE Trans. Antennas Propag., vol. 63, no. 1, pp. 5316-5324, 2015.
D. J. Bisharat, S. Liao, and Q. Xue, “High gain and low cost differentially fed circularly polarized planar aperture antenna for broadband millimeterwave applications,” IEEE Trans. Antennas Propag., vol. 64, no. 1, pp. 33-42, 2016.
W. Sun, W. Yang, P. Chu, and J. Chen, “Design of a wideband circularly polarized stacked dielectric resonator antenna,” IEEE Trans. Antennas Propag., vol. 67, no. 1, pp. 591-595, Jan. 2019.
K. Srivastava, A. Kumar, P. Chaudhary, et al., “Wideband and high-gain circularly polarised microstrip antenna design using sandwiched metasurfaces and partially reflecting surface,” IET Microw. Antennas Propag., vol. 13, no. 3, pp. 305- 312, 2019.
Q. Xue and S. Liao, “A wideband differentially driven circularly polarized antenna,” IEEE International Workshop on Electromagnetics (iWEM), Sapporo, Japan, pp. 269-270, 2014.
Z. H. Tu, K. G. Jia, and Y. Y. Liu, “A differentially fed wideband circularly polarized antenna,” IEEE Antennas Wirel. Propag. Lett., vol. 17, pp. 861- 864, 2018.
M. Yang, Y. Pan, and W. Yang, “A singly fed wideband circularly polarized dielectric resonator antenna,” IEEE Antennas Wirel. Propag. Lett., vol. 17, no. 8, pp. 1515-1518, Aug. 2018.
W. Cao, Q. Wang, and Z. Qian, “Gain enhancement for wideband CP ME-dipole antenna by loading with spiral strip in Ku-band,” IEEE Trans. Antennas Propag., vol. 66, no. 2, pp. 962-966, Feb. 2018.
