A full-wave modal analysis of arbitrarily shaped waveguide discontinuities using the finite plane-wave series expansion

1999 ◽  
Vol 47 (2) ◽  
pp. 232-237 ◽  
Author(s):  
R.H. MacPhie ◽  
Ke-Li Wu
Keyword(s):  
Plane Wave ◽  
Modal Analysis ◽  
Series Expansion ◽  
Finite Plane ◽  
Full Wave ◽  
Waveguide Discontinuities

scholarly journals Plane Wave Coupling to a Transmission Line Above Ground with Terminating Loads

2019 ◽  
Vol 8 (1) ◽  
pp. 82-90
Author(s):  
L. K. Warne ◽  
S. Campione ◽  
R. S. Coats
Keyword(s):  
Plane Wave ◽  
Transmission Line ◽  
Radiation Effects ◽  
Short Circuit ◽  
Open Circuit ◽  
Simple Circuit ◽  
Transmission Line Model ◽  
Wave Coupling ◽  
Full Wave ◽  
Good Agreement

This paper considers plane wave coupling to a transmission line consisting of an aerial wire above a conducting ground. Simple circuit models are constructed for the terminating impedances at the ends of the line including radiation effects. We consider the following load topologies: open circuit, short circuit, and grounded rods. Results from the transmission line model with these loads show good agreement with full-wave simulations.  

scholarly journals Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by A Spherical Nanoantenna

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2937
Author(s):  
Anton V. Dyshlyuk ◽  
Alexey Proskurin ◽  
Andrey A. Bogdanov ◽  
Oleg B. Vitrik
Keyword(s):  
Plane Wave ◽  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Scattering Amplitude ◽  
Incident Light ◽  
High Refractive Index ◽  
Incident Plane Wave ◽  
Full Wave ◽  
Incident Plane ◽  
Plasmon Polaritons

Since surface plasmon polaritons (SPPs) are surface waves, they cannot be excited by an incident plane wave, because free-space photons do not possess a sufficient in-plane momentum. Phase matching between the incident light and SPP can be achieved using a high-refractive-index prism, grating, or nanoantennas. In this work, we found an expression for the amplitude of SPP excited by an arbitrary 3D current distribution placed near a metal interface. The developed method is based on the well-known technique used in waveguide theory that enables finding the amplitudes of waveguide modes excited by the external currents. It reduces the SPP excitation problem to the summation of the set of emitters. As a particular example, we considered a spherical dipole nanoantenna on a metal substrate illuminated by a normally incident plane wave. The analytical calculations were in good agreement with the full-wave numerical simulations.

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