Curvilinear Fresnel-Zone Plate Lens Antenna: Vector Radiation Theory

Kamburov, L. P.; Hristov, H.D.; Urumov, J. R.; Feick, R.

doi:10.1007/s10762-005-0034-8

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…The study is based on: (i) vectorial Kirchhoff diffraction theory of plane 2-e FZP lens antenna as developed by Van Houten and Herben [13], and Hristov and Herben [14], and (ii) conical-segment procedure for linearization of the lens curve profile as described by Hristov, Kamburov, Urumov and Feick in [6], [9] and [11]. These advances were applied here to find out the far-field equations of the conical 2-e FZP lens antenna by setting the m-th zone semi-opening a m [11] in the linearly approximated FZP lens curved profile equal to the constant conical angle a (Fig.…”

Section: Far-field Equations Of Conical Double-dielectric Fresnel Lenmentioning

confidence: 99%

“…[1], [2], Wiltse [3], Minin and Minin [4], Guo and Barton [5], and Hristov [6], among many others is a challenging alternative to the classical lens or reflector antenna. In general, the single FZP lens and multiple or compound FZP lens can be made conformal to a plane or curved (shell-form) formation (building wall, roof or cupola, plastic dome or tent, ground or space vehicle (rigid, collapsible or inflatable [4], [6][7][8][9][10][11]). The future applications of FZP antennas may include communication systems, radars, radio-relay systems, radiotelescopes, etc.…”

Section: Introductionmentioning

confidence: 99%

“…They were also first to examine the conical in shape FZP lens. More recently, the focusing/radiation characteristics of the half-open FZP lenses and antennas of many curvilinear profiles were widely studied and compared numerically by Hristov, Kamburov, et al in [6], [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Compound Fresnel Zone Lens Conformal to Truncated Cone: Antenna Application

Hristov

Kamburov²,

Feick

et al. 2007

Int J Infrared Milli Waves

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A millimeter wave antenna consisting of two Fresnel zone plate lenses, plane and conical, is examined numerically by use of the vector diffraction theory. The lenses are of Wood-Wiltse (double-dielectric) or Soret (half-open) type, and are designed for the frequency of 117 GHz. The lenses are made conformal to a truncated circular cone with a base diameter of 500 mm and a plateau diameter of 250 mm. Designs for two opening semi-angles, 45°and 75°each of them with a particular lens thickness are presented. For the angle of 90°the cone lens becomes a plane ring lens, which in combination with the plateau zone lens forms a plane lens of size equal to the cone base diameter. Illuminated by directive feeds set at a focal distance of 525 mm from the cone apex, the double-dielectric and half-open compound and plane lenses, form three pairs of Fresnel zone lens antennas, the co-polar and cross-polar radiation characteristics of which have been compared numerically. The double-dielectric lens antennas examined are about 5 dB superior in gain to the half-open lens antennas, which has a gain of approximately 45 dBi. Because all lenses are of equal transverse aperture, the corresponding lens antennas exhibit the same −3 dB beamwidth of about 0.33 degrees. The plane zone lens antenna is very thin and simple. Instead, the antenna comprising a 3-D compound Fresnel zone lens is thicker but can be made conformal to a specific surface shape and possesses more levels of design and optimization freedom.

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