TY - JOUR
T1 - Intrinsic Modes in a Wedge-Shaped Taper Above an Anisotropic Substrate
AU - Lu, I. Tai
N1 - Funding Information:
Manuscript received January 22, 1991; revised May 22, 1991. This work was supported in part by the National Science Foundation by Grant ECS-8707615 and by the Joint Services Electronics Program under Contract F49620-88-C-0075. The author is with the Department of Electrical Engineering, Weber Re- search Institute, Polytechnic University, Farmingdale, NY 11735. IEEE Log Number 9103206.
PY - 1991/11
Y1 - 1991/11
N2 - Intrinsic modes yield exact solutions away from the tip in a wedge-shaped taper with penetrable boundaries. Unlike adiabatic modes, they are uncoupled and pass smoothly through the cutoff transition. This model has been generalized to accommodate stratified multiwave substrates and weekly range-dependent environments. Here, a wedge-shaped taper above an anisotropic substrate is considered. In the spectral representation of intrinsic modes, the plane wave reflection coefficient from the substrate depends on the orientation of the optic axis, which in turn, affects the cutoff condition and the direction of the leakage field in the substrate. Since the phase propagation vector and average power flow vector are usually nonparallel in anisotropic media, the field in the substrate is substantially different from that in isotropic cases.
AB - Intrinsic modes yield exact solutions away from the tip in a wedge-shaped taper with penetrable boundaries. Unlike adiabatic modes, they are uncoupled and pass smoothly through the cutoff transition. This model has been generalized to accommodate stratified multiwave substrates and weekly range-dependent environments. Here, a wedge-shaped taper above an anisotropic substrate is considered. In the spectral representation of intrinsic modes, the plane wave reflection coefficient from the substrate depends on the orientation of the optic axis, which in turn, affects the cutoff condition and the direction of the leakage field in the substrate. Since the phase propagation vector and average power flow vector are usually nonparallel in anisotropic media, the field in the substrate is substantially different from that in isotropic cases.
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U2 - 10.1109/3.100875
DO - 10.1109/3.100875
M3 - Article
AN - SCOPUS:0026254806
SN - 0018-9197
VL - 27
SP - 2373
EP - 2377
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 11
ER -