References
- He M, Ye X, Zhou P, et al. A small-size dual-feed broadband circularly polarized u-slot patch antenna. IEEE Antennas Wirel Propag Lett. 2014;99:898–901.
- Zhang C, Liang X, Bai X, et al. A broadband dual circularly polarized patch antenna with wide beamwidth. IEEE Antennas Wirel Propag Lett. 2014;13:1457–1460.
- Vaidya AR, Gupta RK, Mishra SK, et al. Right-hand/left-hand circularly polarized high-gain antennas using partially reflective surfaces. IEEE Antennas Wirel Propag Lett. 2014;13:431–434.
- Hum SV, Chu JZ, Johnston RH, et al. Efficiency of a resistively loaded microstrip patch antenna. IEEE Antennas Wirel Propag Lett. 2003;2:22–25.
- Deng C. Wideband microstrip antennas loaded by ring resonators. IEEE Antennas Wirel Propag Lett. 2013;12:1665–1668.
- Wang K, Li L, Eibert TF. Comparison of compact monopole antenna arrays with eigenmode excitation and multiport conjugate matching. IEEE Trans Antennas Propag. 2013;61:4054–4062.
- Qin H, Wang P, Liu Y-F. Simplified lossless decoupling and matching network for two symmetric antennas. J Electromagn Waves Appl. 2015;29:38–49.
- Rows WST, Waterhouse RB. Investigation in to the performance of proximity coupled stacked patches. IEEE Trans Antennas Propag. 2006;54:1693–1698.
- Yang W, Zhou J, Yu Z, et al. Single-fed low profile broadband circularly polarized stacked patch antenna. IEEE Trans Antennas Propag. 2014;62:5406–5410.
- Nasimuddin N, Esselle KP, Verma AK. Wideband circularly polarized stacked microstrip antennas. IEEE Antennas Wirel Propag Lett. 2007;6:21–24.
- Singh AK, Gangwar RK, Kanaujia BK. Orthogonal slot-loaded coaxially stacked annular ring antenna with circular patch for multiband application. J Electromagn Waves Appl. 2015;29:1630–1643.
- Wu J, Yin Y, Wang Z, et al. Broadband circularly polarized patch antenna with parasitic strips. IEEE Antennas Wirel Propag Lett. 2015;14:559–562.
- Pozar DM. A microstrip antenna aperture coupled to a microstrip line. Electron Lett. 1987;21:49–50.
- Pozar DM, Kaufman B. Increasing bandwidth of a microstrip antenna by proximity coupling. Electron Lett. 1985;23:368–369.
- Guha D, Antar YMM. Microstrip and printed antennas new trends, Techniques and applications. 1st ed. Chichester: Wiley; 2011.
- Zulkifli FY, Rahardjo ET, Hartanto D. Radiation properties enhancement of triangular patch microstrip antenna array using hexagonal defected ground structure. Prog Electromagn Res. 2008;5:101–109.
- Guha D, Kumar C. Nature of cross polarized radiations from probe fed circular microstrip antennas and their suppression using different geometries of defected ground structure. IEEE Trans Antennas Propag. 2012;60:92–101.
- Biswas S, Guha D, Kumar C. Control of higher harmonics and their radiation in microstrip antennas using compact defected ground structures. IEEE Trans Antennas Propag. 2013;61:3349–3354.
- Prajapati PR, Patnaik A, Kartikeyan MV. Design and characterization of an efficient multi-layered circularly polarized microstrip antenna. Int J Microwave Wirel Tech. 2015;7:1–9.
- Xiao S, Tang MC, Bai YY, et al. Mutual coupling suppression in microstrip array using defected ground structure. IET Microwaves, Antennas Prop. 2011;5:1488–1494.
- Farahbakhsh A, Mosalanejad M, Moradi G, et al. Using polygonal defect in ground structure to reduce mutual coupling in microstrip array antenna. J Electromagn Waves Appl. 2014;28:194–201.
- Nouri A, Dadashzadeh GR. A compact UWB band-notched printed monopole antenna with defected ground structure. IEEE Antennas Wirel Propag Lett. 2011;10:1178–1181.
- Nasimuddin, Qing X, Chen ZN. Compact asymmetric slit microstrip antennas for circular polarization. IEEE Trans Antennas Propag. 2011;59:258–288.
- Prajapati PR, Murthy GGK, Patnaik A, et al. Design and testing of a compact circularly polarised microstrip antenna with fractal defected ground structure for L-band applications. IET Microwaves Antennas Propag. 2015;9:1179–1185.
- Gao S, Luo Q, Zhu F. Circular polarized antenna. 1st ed. Chichester: Wiley; 2014.
- Kim HM, Lee B. Bandgap and slow/fast wave characteristics of defected ground structures including left-handed features. IEEE Trans Microwave Theory Tech. 2006;54:3113–3120.
- CST Microwave studio simulator, version 12.
- Kumar C, Guha D. Linearly polarized elliptical microstrip antenna with improved polarization purity and bandwidth characteristics. Microwave Opt Tech Lett. 2012;54:2309–2314.
- Prajapati PR, Kartikeyan MV. Proximity coupled stacked circular disc microstrip antenna with reduced size and enhanced bandwidth using DGS for WLAN/WiMAX applications. In: Proceedings of the IEEE Student’s Conference on Electrical, Electronics and Computer Science (SCEECS); 2012 March; NIT Bhopal, India. p. 1–4.
- Shakib MN, Islam MT, Misran N. Patch antenna design for WLAN system. In: Proceedings of the IEEE Asia Pacific Microwave Conference; 2009; Singapore. p. 2785–2787.
- Wang L, Wei K, Feng J, et al. A wideband omnidirectional planar microstrip antenna for WLAN applications. In: Proceedings of the IEEE Electrical Design of Advanced Packaging and Systems Symposium (EDAPS); 2011; Hanzhou. p. 1–4.
- Arifianto MS, Maryadi, Munir A. Dual-band circular patch antenna incorporated with split ring resonators metamaterials. In: Proceedings of the 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON); 2013; Krabi. p. 1–4.
- Balanis CA. Antenna theory analysis and design. 2nd ed. New Delhi: Wiley; 1997.