TY - JOUR
T1 - Rigorous TE solution to the dielectric wedge antenna fed by a slab waveguide
AU - Whitman, Gerald M.
AU - Pinthong, Chairat
AU - Chen, Wan Yu
AU - Schwering, Felix K.
N1 - Funding Information:
Manuscript received December 7, 2004; revised June 7, 2005. This work was supported in part by the U.S. Army Research Office under Contract DAAL 03-91-C-0034. G. M. Whitman and C. Pinthong are with the Electrical and Computer Engineering Department, New Jersey Institute of Technology, Newark, NJ 07102 USA (e-mail: [email protected]). W.-Y. Chen is with the INTI College Malaysia, Negeri Sembilan, Malaysia. F. K. Schwering is with the U.S. Army, CECOM, Fort Monmouth, NJ 07702 USA. Digital Object Identifier 10.1109/TAP.2005.861533
PY - 2006
Y1 - 2006
N2 - A rigorous TE solution to the dielectric wedge antenna fed by a slab waveguide of the same material is presented. The method of solution involves modeling the wedge as a sequence of step discontinuities and uses an iterative procedure to track forward and backward partial wave fields, expressed as modal ex-., pansions, to obtain the rigorous field solution. Radiation patterns of directive gain are presented. All patterns smoothly decrease from a maximum in the endfire direction and exhibit extremely low side lobe levels. Longer length wedges or smaller dielectric constant materials are shown to produce higher directivity and smaller half-power beamwidths. For slender, gradually tapered wedges, the reflection coefficient of the guided (surface) wave at the input to the wedge is very small indicating a low VSWR for tapered dielectric antennas and there appears to be no gain limitation with antenna length for these antennas.
AB - A rigorous TE solution to the dielectric wedge antenna fed by a slab waveguide of the same material is presented. The method of solution involves modeling the wedge as a sequence of step discontinuities and uses an iterative procedure to track forward and backward partial wave fields, expressed as modal ex-., pansions, to obtain the rigorous field solution. Radiation patterns of directive gain are presented. All patterns smoothly decrease from a maximum in the endfire direction and exhibit extremely low side lobe levels. Longer length wedges or smaller dielectric constant materials are shown to produce higher directivity and smaller half-power beamwidths. For slender, gradually tapered wedges, the reflection coefficient of the guided (surface) wave at the input to the wedge is very small indicating a low VSWR for tapered dielectric antennas and there appears to be no gain limitation with antenna length for these antennas.
KW - Dielectric antenna
KW - Dielectric wedge antenna
KW - Mode-matching
KW - Tapered dielectric rod antenna
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U2 - 10.1109/TAP.2005.861533
DO - 10.1109/TAP.2005.861533
M3 - Article
AN - SCOPUS:33645702813
SN - 0018-926X
VL - 54
SP - 101
EP - 113
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 1
ER -