News

 Statistics

Number of Journals38
Number of Issues1,418
Number of Articles10,203
Article View12,182,977
PDF Download7,127,264
Safari Dehnavi, M., razavi, S., Mohseni Armaki, S. (2018). Beam width expansion of microstrip array antenna by wide angle impedance matching layer. Electronic and Cyber Defense, 6(1), 31-39.
mahboube Safari Dehnavi; sayed mohammad javad razavi; S. Hossein Mohseni Armaki. "Beam width expansion of microstrip array antenna by wide angle impedance matching layer". Electronic and Cyber Defense, 6, 1, 2018, 31-39.
Safari Dehnavi, M., razavi, S., Mohseni Armaki, S. (2018). 'Beam width expansion of microstrip array antenna by wide angle impedance matching layer', Electronic and Cyber Defense, 6(1), pp. 31-39.
Safari Dehnavi, M., razavi, S., Mohseni Armaki, S. Beam width expansion of microstrip array antenna by wide angle impedance matching layer. Electronic and Cyber Defense, 2018; 6(1): 31-39.

Beam width expansion of microstrip array antenna by wide angle impedance matching layer

الکترومغناطیس کاربردی
Article 5, Volume 6, Issue 1 - Serial Number 16, September 2018, Pages 31-39    PDF (1.59 M)
Document Type: Original Article
Authors
mahboube Safari Dehnavi; sayed mohammad javad razavi* ; S. Hossein Mohseni Armaki
malek ashtar university of technology
Receive Date: 12 September 2018,  Revise Date: 29 December 2018,  Accept Date: 02 March 2019 
Abstract
In this paper, a new method for calculation the active reflection coefficient of an array antenna has been proposed, and accordingly an anisotropic wide angle impedance matching layer has been designed to mitigate blind spots. The designed antenna consists of a microstrip array with rectangular arrangement. The space between the elements in the mentioned array is equal with 0.63 wavelength in X band. In order to compensate the impedance mismatch near the blind spots between the antenna and the free space above the aperture and also to increase the antenna scan range, the anisotropic matching layer characteristics are extracted by genetic algorithm optimization method. Finally, its efficiency is investigated in CST Microwave Studio and HFSS software. Compared with other similar techniques, the proposed method is simpler, faster, and does not require to fabricate and coupling coefficients measurement. It is a powerful tool for deriving the active reflection of microstrip array antenna that is difficult to extract their analytical equations. The designed wide-angle impedance matching layer has increased the scan range of antenna from ±34° to ±42° by shifting blind spots.
Keywords
Microstrip array antenna; Blind spots; X band; Optimization; WAIM
References

[1] Y. Haghian, S. H. Mohseni Armaki, M. Kazerooni, “Design, Simulation and Realization of S band Circular Polarization Microstrip Array Antenna ,” Applied. Electromagnetic, No. 1, pp. 49-54, 2015(In Persian).
[2] D. M. Pozar, “Scanning characteristics of infinite arrays of printed antenna subarrays,” IEEE Transactions on Antennas and Propagation ., Vol. 40, No. 6, pp. 666-674, 1992.
[3] R. B. Waterhouse, “The use of shorting posts to improve the scanning range of probe-fed microstrip patch phased arrays,” IEEE Transactions on Antennas and Propagation ., Vol. 44, No. 3, pp. 302-309, 1996.
[4] W.-J. Tsay and D. M. Pozar, “Radiation and scattering from infinite periodic printed antennas with inhomogeneous media,” IEEE Transactions on Antennas and Propagation ., Vol. 46, No. 11, pp. 1641-1650, 1998.
[5] R. L. Chen, D. R. Jackson, J. T. Williams, and S. A. Long, “Scan impedance of RSW microstrip antennas in a finite array,” IEEE Transactions on Antennas and Propagation ., Vol. 53, No. 3, pp. 1098-1104, 2005.
[6] T. Crépin et al., “Blind spot mitigation in phased array antenna using metamaterials,” In the Int. Radar Conf, 2014, pp. 1-4.
[7] D. M. Pozar and D. H. Schaubert, “Microstrip antennas: the analysis and design of microstrip antennas and arrays” John Wiley & Sons Inc.: New Jersey, 1995.
[8] H. Moghadas, A. Tavakoli, and M. Salehi, “Elimination of scan blindness in microstrip scanning array antennas using defected ground structure,” AEU-International Journal of Electronics and Communications., Vol. 62, No. 2, pp. 155-158, 2008.
[9] M. Isa et al.,“A technique of scan blindness elimination for planar phased array antenna using miniaturized EBG,” Journal of Teknologi, Vol. 69, No. 2, pp.11-15, 2014.
[10] Z. Iluz, R. Shavit, and R. Bauer,“Microstrip antenna phased array with electromagnetic bandgap substrate,” IEEE Transactions on Antennas and Propagation, Vol. 52, No. 6, pp. 1446-1453, 2004.
[11] S. Sajuyigbe,“Electromagnetic metamaterials for antenna applications,” Ph.D. Thesis, Duke Univ., Durham, NC, 2010.
[12] E. Magill and H. Wheeler,“Wide-angle impedance matching of a planar array antenna by a dielectric sheet,” IEEE Transactions on Antennas and Propagation ., Vol. 14, No. 1, pp. 49-53, 1966.
[13] S. Sajuyigbe, M. Ross, P. Geren, S. Cummer, M. Tanielian, and D. Smith, “Wide angle impedance matching metamaterials for waveguide-fed phased-array antennas,” IET Microwave, Antennas & Propagation, Vol. 4, No. 8, pp. 1063-1072, 2010.

[14] T. R. Cameron and G. V. Eleftheriades, “Analysis and characterization of a wide-angle impedance matching metasurface for dipole phased arrays,” IEEE Transactions on Antennas and Propagation ., Vol. 63, No. 9, pp. 3928-3938, 2015.
[15] P. Rodriguez-Ulibarri et al., “Metaradome for blind spot mitigation in phased-array antennas,” Eu. Conf. on Antennas and Propa., 2014, 2504-2508.
[16] P. Rodríguez Ulibarri et al.,“Experimental demonstration of metamaterials application for mitigating scan blindness in phased array antennas,” EPJ Applied metamaterials, Vol. 3, No. 9, pp 1-9, 2016.
[17] A. K. Bhattacharyya, “Phased array antennas: Floquet analysis, synthesis, BFNs and active array systems”; John Wiley & Sons Inc.: New Jersey, 2006.
[18] E. Adas, F. De Flaviis, and N. G. Alexopoulos,“Integrated microstrip antennas and phased arrays with mode-free electromagnetic bandgap materials for scan blindness elimination,” Electromagnetics, Vol. 37, No. 1, pp. 1-16, 2017.
[19] N. R. Labadie, S. K. Sharma, and G. M. Rebeiz, “A novel approach to beam steering using arrays composed of multiple unique radiating modes,” IEEE Transactions on Antennas and Propagation ., Vol. 63, No. 7, pp. 2932-2945, 2015.
[20] F. Silvestri, L. Cifola, and G. Gerini, “Diamagneto-Dielectric Anisotropic Wide Angle Impedance Matching Layers for Active Phased Arrays,” Progress in electromagnetics research B, Vol. 70,pp 1-12, 2016.
[21] R. L. Haupt and S. E. Haupt, “Practical genetic algorithms” John Wiley & Sons Inc.: New Jersey, 2004.

Statistics
Article View: 625
PDF Download: 398