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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2017, № 10 · ELECTRODYNAMICS

2D single-focus frequency scanning arrays focused in the Fesnel zone

S.E. Bankov1

1 Kotelnikov IRE RAS, Moscow, Russia
Full text (PDF) EDN ZTLVTJ

Abstract

2D single-focus arrays of elementary radiators with frequency scanning focused in the Fresnel zone are considered. A problem of the array synthesis is solved for the arrays of different types. The proposed solution determines coordinates of the elementary radiators located in the planar aperture. An approximate analysis of the electromagnetic field radiated by the array of the radiators assuming specified currents is presented. The currents are formed by a system of parallel transmission lines loaded with the elementary radiators. Traces of focal spots movement in two dominant scanning planes - in parallel and perpendicular to the transmission lines axes - are investigated. Scanning curves determined for the field strength maximum and for the radiation efficiency maximum are obtained.

  • focused array
  • frequency scanning
  • Fresnel zone
  • radiation efficiency
Аннотация (на русском)

Двумерные однофокальные решетки с частотным сканированием, сфокусированные в зоне Френеля

Рассмотрены сфокусированные в зоне Френеля двумерные решетки с частотным сканированием. Для решеток разных типов решена задача синтеза. Полученное решение определяет положение элементарных излучателей в пределах плоской апертуры. Проведен приближенный анализ поля излучения решетки в приближении заданных токов. Токи формируются системой параллельных линий передачи нагруженных элементарными излучателями. В двух главных плоскостях сканирования исследованы траектории движения фокальных пятен - дуги сканирования. Рассмотрены дуги сканирования определенные по максимуму поля и по максимуму эффективности излучения.

For citation

Bankov S.E. 2D single-focus frequency scanning arrays focused in the Fesnel zone // Journal of Radio Electronics. – 2017. – No. 10.

References

  1. David M. Sheen, Justin L. Fernandes, Jonathan R. Tedeschi, Douglas L. McMakin, A. Mark Jones,Wayne M. Lechelt, and Ronald H. Severtsen, Wide-bandwidth, wide-beamwidth, high-resolution, millimeter-wave imaging for concealed weapon detection, Proc. of SPIE, Vol. 8715 871509-1.
  2. D.A. Robertson, S.L. Cassidy, B. Jones, A. Clark, in Passive and Active Millimeter-Wave Imaging XVII, Proc. of SPIE, vol. 9078, ed. by D.A. Wikner, A.R. Luukanen (2014), Proc. of SPIE, vol. 9078, p. 907805. doi:10.1117/12. 2053023.
  3. S.S. Ahmed, A. Schiessl, L.-P. Schmidt, et al., A novel fully electronic active real-time imager based on a planar multistatic sparse array, IEEE Transactions on Microwave Theory and Techniques, 2011, 59, p. 3567-3576.
  4. N. J. Bowring, M. J. Southgate, D. A. Andrews, et al., Development of a longer range standoff millimeter wave radar concealed threat detector. Proc. of SPIE, Vol. 8714 87140C.
  5. E. Heinz, T. May, D. Born, G.l. Zieger, et al., Toward high-sensitivity and high-resolution submillimeter-wave video imaging Opt. Eng., 50(11), November 02, 2011.
  6. E. N. Grossman, J. Gordon, D. Novotny, R. Chamberlin, Terahertz active and passive imaging, 2014 8th European Conference on Antennas and Propagation (EuCAP), DOI: 10.1109/EuCAP.2014.6902253.
  7. N.E. Alexander, B. Alderman, F. Allona, et al, TeraSCREEN: multi-frequency multi-mode Terahertz screening for border checks. Proc. of SPIE, Vol. 9078 907802-1.
  8. E. Gandini, N. Llombart, A. Neto, T. Bryllert, E.Gandini, N.Llombart, Near-field imaging system fed by lens antenna focal plane array at sub-millimeter frequency. Proc. of IEEE Europ. Conf. on Antennas and Propagation, Apr.6-11, Hague, Netherland, 2014.
  9. Sheen, D.M., McMakin D.L., and Hall T.E., Combined illumination cylindrical millimeter-wave imaging technique for concealed weapon detection. Proc. of SPIE, 2000. 4032: p. 52-60.
  10. Sheen, D.M., D.L. McMakin, and T.E. Hall, Cylindrical millimeter-wave imaging technique for concealed weapon detection. Proceedings of SPIE, 1997. 3240: p. 242-250.
  11. E. Schreiber, M. Peichl, M. Jirousek, H. Suess. VESAS: a novel concept for fully-electronic passive MW imaging. Proceedings of SPIE Defense, Security, and Sensing. 2013, 8715 (87150J). SPIE Digital Library. SPIE Defense, Security, and Sensing 2013, Apr 29 -May 3, 2013, Baltimore, USA.
  12. I. Ohtera, Focusing properties of a microwave radiator utilizing a slotted rectangular waveguide. IEEE Trans. on Antennas and Propagation, 1990, V. 38, N. 1, p. 121-124.
  13. I. Ohtera, Diverging/focusing of electromagnetic waves by utilizing the curved leakywave structure: Application to broad-beam antenna for radiating within specified wide-angle. IEEE Trans. on Antennas and Propagation, 1999, V. 47, N. 9, p.1470-1475.
  14. J. L. Gómez-Tornero, F. Quesada-Pereira, A. Alvarez-Melcón, et al., Frequency steerable two dimensional focusing using rectilinear leaky-wave lenses, IEEE Trans. on Antennas and Propagation, V. 59, N. 2, 2011, p. 407-415.
  15. A. J. Martínez-Ros, J. L. Gómez-Tornero, F. J. Clemente-Fernández, J. Monzó-Cabrera, Microwave near-field focusing properties of width-tapered microstrip leaky-wave antenna. IEEE Trans. on Antennas and Propagation, VOL. 61, N. 6, 2013, p. 2981-2990.
  16. T. Okuyama, Y. Monnai, H. Shinoda, 20-GHz focusing antennas based on corrugated waveguide scattering. IEEE Antennas and Wireless Propagation Letters, V. 12, 2013, p. 1284-1286.
  17. S. Clauzier, S. Avrillon, L. Le Coq, M. Himdi, F. Colombel, E. Rochefort, Slotted waveguide antenna with a near-field focused beam in one plane. Microwaves, Antennas & Propagation, IET, 2014, Volume: 9, Issue: 7, p. 634- 639, https://hal.archives-ouvertes.fr/hal-01114680/document.
  18. M. L. Chen, S. Gupta, Z. L. Ma, L. J. Jiang, Linearly Polarized Near Field Focused Slot-Array Waveguide, Antennas and Propagation Society International Symposium (APSURSI), IEEE, 6-11 July, 2014, p. 1047-1048, Memphis, USA.
  19. J. L. Gómez-Tornero, A. J. Martinez-Ros, N. D.Blanco, E. Rajo-Iglesias, Near-field focusing with holographic two-dimensional tapered leaky-wave slot antennas. Proc. of the 6th European Conf. on Antennas and Propagation (EUCAP), 2012, p. 234-238.
  20. D. Blanco, J.L. Gómez-Tornero, E. Rajo-Iglesias, N. Llombart, Radially polarized annular-slot leaky-wave antenna for three-dimensional near-field microwave focusing. IEEE Antennas and Wireless Propagating Letters, V. 13, 2014, p. 583-586.
  21. M. Ettorre, M. Casaletti, G.Valerio, R. Sauleau, L. Le Coq, S. C. Pavone, M. Albani, On the near-field shaping and focusing capability of a radial line slot array. IEEE Trans. on Antennas and Propagation, V. 62, N. 4, April 2014, p. 1991-1999.
  22. S. E. Bankov, V. A. Kaloshin, and E. V. Frolova, Synthesis and Analysis of a Frequency_Scanned Planar Waveguide Array Focused in the Fresnel Zone. Journal of Communications Technology and Electronics, 2016, Vol. 61, No. 6, pp. 587-597.
  23. S. E. Bankov and E. V. Frolova, Synthesis and Analysis of a Planar Waveguide Array with Two-Dimensional Frequency Scanning Focused in the Fresnel Zone. Journal of Communications Technology and Electronics, 2017, Vol. 62, No. 9, pp. 927-940.
  24. Т.A. Milligan, Modern antenna design. USA, New Jersey, JOHN WILEY & SONS, INC., 2005.
  25. Rotman W. and Turner R.F. Wide-Angle Microwave Lens for Line Source Applications. // IEEE Transactions on AP. 1963. V. 11. N. 11. P. 623-632.