[1] R. S. Wehner, “Limitations of focused aperture
antennas,” Rand Corp. Santa Monica, Calif., Res.
Memo. RM-262, October 1949. ##
[2] J. Sherman, “Properties of focused apertures in the
fresnel region,” IRE Transactions on Antennas and
Propagation, vol. 10, no. 4, pp. 399-408, Jul. 1962. ##
[3] A. F. Kay, “Near-field gain of aperture antennas,” IRE
Trans. Antennas Propagat., vol. AP-8, pp. 586-593
1960. ##
[4] W. J. Graham, “Analysis and synthesis of axial field
patterns of focused apertures,” IEEE Trans. Antennas
Propagat., vol. AP-31, no. 4, 1983. ##
[5] P.-S. Kildal and M. M. Davis, “Characterization of
near-field focusing with application to the Arecibo
tri-reflector system,” IEEE Antennas and Propagation
Society International Symposium. 1995 Digest, 1995. ##
[6] P.-S. Kildal and M. M. Davis, “Characterisation of
near-field focusing with application to low altitude beam
focusing of the Arecibo tri-reflector system,” IEE Proc.,
Microw. Antennas Propag., vol. 143, no. 4, p. 284,
1996. ##
[7] A. Badawi, A. Sebak, and L. Shafai, “Array near field
focusing,” IEEE WESCANEX 97 Communications,
Power and Computing, Conference Proceedings, 1997. ##
[8] L. Shafai, A. A. Kishk, and A. Sebak, “Near field
focusing of apertures and reflector antennas,” IEEE
WESCANEX 97 Communications, Power and
Computing, Conference Proceedings, 1997. ##
[9] N. Liombart, K. B. Cooper, R. J. Dengler, T. Bryllert,
and P. H. Siegel, “Confocal ellipsoidal reflector system
for a mechanically scanned active terahertz imager
Antennas and Propagation,” IEEE Transactions on, vol.
58, no. 6, pp. 1834-1841, 2010. ##
[10] H.-T. Chou, L.-R. Kuo, H.-H. Chou, K.-L. Hung, and P.
Nepa, “Realistic implementation of ellipsoidal reflector
antennas to produce near-field focused patterns,” Radio
Science, vol. 46, no. 5, Sep. 2011. ##
[11] S. Xiao, S. Altunc, P. Kumar, C. E. Baum, and K. H.
Schoenbach, “A Reflector Antenna for Focusing
Subnanosecond Pulses in the Near Field,” Antennas
Wirel. Propag. Lett., vol. 9, pp. 12-15, 2010. ##
[12] A. M. Abdulkhaleq, K. H. Sayidmarie, R.
Abd-Alhameed, and E. A. Elkhazmi, “Effects of
elements distribution in near focused arrays,” 2012
IEEE 17th International Workshop on Computer Aided
Modeling and Design of Communication Links and
Networks (CAMAD), Sep. 2012. ##
[13] A. Buffi, P. Nepa, and G. Manara, “Design Criteria for
Near-Field-Focused Planar Arrays,” IEEE Antennas and
Propagation Magazine, vol. 54, no. 1, pp. 40-50, Feb.
2012. ##
[14] H.-T. Chou, N.-N. Wang, H.-H. Chou, and J.-H. Qiu,
“Design of Periodic Antenna Arrays With the Excitation
Phases Synthesized for Optimum Near-Field Patterns
via Steepest Descent Method,” IEEE Trans. Antennas
Propagat., vol. 59, no. 11, pp. 4342-4345, Nov. 2011. ##
[15] H.-T. Chou, N.-N. Wang, H.-H. Chou, and J.-H. Qiu,
“An Effective Synthesis of Planar Array Antennas for
Producing Near-Field Contoured Patterns,” IEEE Trans.
Antennas Propagat., vol. 59, no. 9, pp. 3224-3233, Sep.
2011. ##
[16] P. Lemaitre-Auger, S. Romain, C. Christophe, and K.
Darine, “Circular antenna arrays for near-field focused
or multi-focused beams,” In Electromagnetic Theory
(EMTS), Proceedings of 2013 URSI International
Symposium on, IEEE, pp. 425-428, 2013. ##
[17] J. L. Gomez-Tornero, F. Quesada-Pereira, A.
Alvarez-Melcon, G. Goussetis, A. R. Weily, and Y. J.
Guo, “Frequency Steerable Two Dimensional Focusing
Using Rectilinear Leaky-Wave Lenses,” IEEE Trans.
Antennas Propagat., vol. 59, no. 2, pp. 407-415, Feb.
2011. ##
[18] C. A. Balanis, “Antenna theory analysis and design,”
New York (NY), Wiley, 2005. ##
[19] M. R. Spiegel, “Mathematical handbook of formulas and
tables,” Mcgraw-Hill, New York, 1968.##
)
