Design and parametric investigation of directional antenna for microwave imaging application

Design and parametric investigation of directional antenna for microwave imaging application

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Microwaves, Antennas & Propagation — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This study presents a new side slotted Vivaldi antenna (SSVA) with size reduction and improve gain with directive featured as compared with traditional Vivaldi antenna. A number of parameters are studied and optimised for breast imaging system over ultra-wideband frequency (3.1–10.6 GHz). The parameter such as substrate type, radiating fins, cavity diameter, stub radius, stub angle is optimised to reduce the size of the antenna with better antenna performance in terms of bandwidth, gain, efficiency, and directivity. The radiating fins are modified by etching a number of side slot to enhance the gain and electrical length. The optimised size of the antenna is 45 (L) × 37 (W) mm2, 8.5 mm cavity diameter, 9.5 mm stub radius with the angle of 80° by using Rogers 5870 substrate. Results show that the antenna has a bandwidth from 3.9 to 9.15 GHz for reflection co-efficient <−10 dB with directional radiation pattern. The peak gain of proposed prototype is 6.8 dBi and the radiation efficiency is about 88% on an average over the operating bandwidth. The fidelity factor for face to face is 0.92 and for side by side is 0.62, which prove the directionality and lower distortion of the signal. A number of design iteration is done to achieve the optimum result of the antenna. The prototype of proposed SSVA antenna is successfully fabricated, simulated, and measured. Later, the antenna is used in breast phantom measurement system for microwave imaging application.


    1. 1)
      • 1. Gibson, P.: ‘The Vivaldi aerial’. 9th European Microwave Conf., 1979.1979, pp. 101105.
    2. 2)
      • 2. De Oliveira, A.M., Perotoni, M.B., Kofuji, S.T., et al: ‘A palm tree antipodal Vivaldi antenna with exponential slot edge for improved radiation pattern’, IEEE Antennas Wirel. Propag. Lett., 2015, 14, pp. 13341337.
    3. 3)
      • 3. Alzabidi, M.A., Aldhaeebi, M.A., Elshafiey, I.: ‘Development of UWB Vivaldi antenna for microwave imaging’. , 2013 Saudi Int. Electronics, Communications and Photonics Conf. (SIECPC), 2013, pp. 14.
    4. 4)
      • 4. Islam, M.M., Islam, M.T., Samsuzzaman, M., et al: ‘A miniaturized antenna with negative index metamaterial based on modified SRR and CLS unit cell for UWB microwave imaging applications’, Materials, 2015, 8, pp. 392407.
    5. 5)
      • 5. Zhang, J., Fear, E.C., Johnston, R.H.: ‘Cross-Vivaldi antenna for breast tumor detection’, Microw. Opt. Technol. Lett., 2009, 51, pp. 275280.
    6. 6)
      • 6. Islam, M.M., Islam, M.T., Faruque, M.R.I., et al: ‘Microwave imaging sensor using compact metamaterial UWB antenna with a high correlation factor’, Materials, 2015, 8, pp. 46314651.
    7. 7)
      • 7. Jafari, H., Deen, J., Hranilovic, S., et al: ‘Co-polarised and cross-polarised antenna arrays for breast, cancer detection’, IET Microw. Antennas Propag., 2007, 1, pp. 10551058.
    8. 8)
      • 8. Sarkar, C.: ‘Some parametric studies on Vivaldi antenna’, Int. J. u-and e-Service Sci. Technol., 2014, 7, pp. 323328.
    9. 9)
      • 9. Nassar, I.T., Weller, T.M.: ‘A novel method for improving antipodal Vivaldi antenna performance’, IEEE Trans. Antennas Propag., 2015, 63, pp. 33213324.
    10. 10)
      • 10. Abbak, M., Çayören, M., Akduman, I.: ‘Microwave breast phantom measurements with a cavity-backed Vivaldi antenna’, IET Microw. Antennas Propag., 2014, 8, p.1127.
    11. 11)
      • 11. Wu, B., Ji, Y., Fang, G.: ‘Design and measurement of compact tapered slot antenna for UWB microwave imaging radar’. 9th Int. Conf. on Electronic Measurement and Instruments, 2009. ICEMI'09.2009, pp. 2-2262-229.
    12. 12)
      • 12. He, S.H., Shan, W., Fan, C., et al: ‘An improved Vivaldi antenna for vehicular wireless communication systems’, IEEE Antennas Wirel. Propag. Lett., 2014, 13, pp. 15051508.
    13. 13)
      • 13. Pandey, G., Verma, H., Meshram, M.: ‘Compact antipodal Vivaldi antenna for UWB applications’, Electron. Lett., 2015, 51, pp. 308310.
    14. 14)
      • 14. Mohammed, B.a.J., Abbosh, A.M., Sharpe, P.: ‘Planar array of corrugated tapered slot antennas for ultrawideband biomedical microwave imaging system’, Int. J. RF Microw. Comput.-Aided Eng., 2013, 23, pp. 5966.
    15. 15)
      • 15. Chiappe, M., Gragnani, G.L.: ‘Vivaldi antennas for microwave imaging: theoretical analysis and design considerations’, IEEE Trans. Instrum. Meas., 2006, 55, pp. 18851891.
    16. 16)
      • 16. Mavridis, G.A., Anagnostou, D.E., Chryssomallis, M.T.: ‘Evaluation of the quality factor, q, of electrically small microstrip-patch antennas [wireless corner]’, IEEE Antennas Propag. Mag., 2011, 53, pp. 216224.
    17. 17)
      • 17. Yaghjian, A.D., Best, S.R.: ‘Impedance, bandwidth, and Q of antennas’, IEEE Trans. Antennas Propag., 2005, 53, pp. 12981324.
    18. 18)
      • 18. Jossinet, J., Schmitt, M.: ‘A review of parameters for the bioelectrical characterization of breast tissue’, Ann. New York Acad. Sci., 1999, 873, pp. 3041.
    19. 19)
      • 19. Joines, W.T., Zhang, Y., Li, C., et al: ‘The measured electrical properties of normal and malignant human tissues from 50 to 900 MHz’, Med. phys., 1994, 21, pp. 547550.
    20. 20)
      • 20. Kibria, S., Islam, M.T., Yatim, B.: ‘New compact dual-band circularly polarized universal RFID reader antenna using ramped convergence particle swarm optimization’, IEEE Trans. Antennas Propag., 2014, 62, pp. 27952801.

Related content

This is a required field
Please enter a valid email address