Dual wideband circular slot antenna for C- and X-band applications


  • Prachi Gupta ICFAI University, Dehradun, India
  • Samarth Agarwal ICFAI University, Dehradun, India
  • Manish Jaiswal Central Electronics Engineering Research Institute, Pilani, India




WCS, MPA, wide circular slot, slotting technique, wideband, microstrip patch antenna


The paper deals with a dual wide band micro-strip line fed compact antenna consisting of wide circular slot. The proposed antenna is designed on FR-4 dielectric material having εr = 4.3. The antenna is fed by 50 Ω microstrip line and the optimized volumetric dimension of the proposed antenna is 36×36×1.6 mm3. A wide circular slot is cut from the ground plane resulting in dual nature of antenna with the wide band of 1.23 GHz and 2.4 GHz at 5.8 GHz and 8.4 GHz of frequency which comes under the C- and X-band of electromagnetic spectrum. The design is not only procuring wide band but also a remarkable gain at both operating frequencies. At last, to validate the proposed work, the design is fabricated and further tested using vector network analyzer. The simulated and measured results are in good agreement.


W. Li, Y. Hei, P. M. Grubb, X. Shi, R. T. Chen, “Compact inkjet-printed flexible MIMO antenna for UWB applications,” IEEE Access, vol. 6, pp. 50290–50298, 2018, doi: https://doi.org/10.1109/ACCESS.2018.2868707.

S. P. Gangwar, K. Gangwar, A. Kumar, “A compact modified hexagonal slot antenna for wideband applications,” Electromagnetics, vol. 38, no. 6, pp. 339–351, 2018, doi: https://doi.org/10.1080/02726343.2018.1488424.

K. Li, T. Dong, Z. Xia, “Wideband printed wide-slot antenna with fork-shaped stub,” Electron., vol. 8, no. 3, p. 0, 2019, doi: https://doi.org/10.3390/electronics8030347.

G. Kumar, K. P. Ray, Broadband Microstrip Antennas. Boston, MA and London, UK: Artech House, 2002.

S. R. Emadian, J. Ahmadi-Shokouh, “Very small dual band-notched rectangular slot antenna with enhanced impedance bandwidth,” IEEE Trans. Antennas Propag., vol. 63, no. 10, pp. 4529–4534, 2015, doi: https://doi.org/10.1109/TAP.2015.2456905.

S. Lamari, R. Kubacki, M. Czyzewski, “Bandwidth enhancement of a microstrip patch antenna using the metamaterial planar periodic structure,” in Progress in Electromagnetics Research Symposium, 2015.

J. Ali et al., “Cantor fractal-based printed slot antenna for dual-band wireless applications,” Int. J. Microw. Wirel. Technol., vol. 8, no. 2, pp. 263–270, 2016, doi: https://doi.org/10.1017/S1759078714001469.

S. T. Fan, Y. Z. Yin, B. Lee, W. Hu, X. Yang, “Bandwidth enhancement of a printed slot antenna with a pair of parasitic patches,” IEEE Antennas Wirel. Propag. Lett., vol. 11, pp. 1230–1233, 2012, doi: https://doi.org/10.1109/LAWP.2012.2224311.

N. Tasouji, J. Nourinia, C. Ghobadi, F. Tofigh, “A novel printed UWB slot antenna with reconfigurable band-notch characteristics,” IEEE Antennas Wirel. Propag. Lett., vol. 12, pp. 922–925, 2013, doi: https://doi.org/10.1109/LAWP.2013.2273452.

A. Dastranj, “Optimization of a printed UWB antenna: Application of the invasive weed optimization algorithm in antenna design,” IEEE Antennas Propag. Mag., vol. 59, no. 1, pp. 48–57, 2017, doi: https://doi.org/10.1109/MAP.2016.2630025.

Y. Sung, “Bandwidth enhancement of a microstrip line-fed printed wide-slot antenna with a parasitic center patch,” IEEE Trans. Antennas Propag., vol. 60, no. 4, pp. 1712–1716, 2012, doi: https://doi.org/10.1109/TAP.2012.2186224.

J.-Y. Jan, J.-W. Su, “Bandwidth enhancement of a printed wide-slot antenna with a rotated slot,” IEEE Trans. Antennas Propag., vol. 53, no. 6, pp. 2111–2114, 2005, doi: https://doi.org/10.1109/TAP.2005.848518.

P. Prachi, B. Chauhan, M. Jaiswal, “Performance analysis of different slotted U, half U, p and half p microstrip patch antennas for LTE application,” Int. J. Comput. Appl., vol. 86, no. 18, pp. 11–15, 2014, doi: https://doi.org/10.5120/15084-3327.

G. Prachi, C. Brajlata, “Performance analysis of bandwidth and gain improvement of printed wide slot antenna using parasitic patch,” Sci. Res. Essays, vol. 9, no. 15, pp. 661–667, 2014, doi: https://doi.org/10.5897/SRE2014.5927.

H. Srivastava, A. Singh, A. Rajeev, U. Tiwari, “Bandwidth and gain enhancement of rectangular microstrip patch antenna (RMPA) using slotted array technique,” Wirel. Pers. Commun., vol. 114, no. 1, pp. 699–709, 2020, doi: https://doi.org/10.1007/s11277-020-07388-x.

S. Lakrit, “Design of dual and wideband rectangular patch antenna for C and X band applications,” Adv. Electromagn., vol. 7, no. 5, pp. 145–150, 2018, doi: https://doi.org/10.7716/aem.v7i5.933.

F. Tubbal, R. Raad, P. I. Theoharis, S. Iranmanesh, S. Abulgase, M. U. A. Khan, “Dual band slot antenna with F-shaped slits for C-band and X-band applications,” in 2019 13th International Conference on Signal Processing and Communication Systems (ICSPCS), 2019, pp. 1–4, doi: https://doi.org/10.1109/ICSPCS47537.2019.9008754.

Gain of proposed antenna at 5.8 GHz





Research Articles