A numerical method for scattering of electromagnetic waves from a periodic strip grating over a grounded dielectric slab is considered for TE and TM polarization cases from the viewpoints of both reflection grating problem and leaky wave antenna problem. The analysis is based on a mode expansion method, floquet's theorem, and the method of moments. Numerical results involving some combinations of geometric parameters are presented in terms of complex propagation constant (kd-$\beta$d diagram), radiation pattern, and relative scattered powers of spectral modes. In particular, the relationship between complex propagatio constnat form the viewpoint of leaky wqve antenna problem and Off-bragg and bragg blazing phenomena from the viewpoint of reflecton graing problem is investigated.
Baek, W.S. ; Cho, U.H. ; Lee, J.I. ; Lee, C.H. ; Hong, J.P. ; Cho, Y.K. ; Son, H. 1997. "Experiments of bragg and off-bragg blazing phenomena by strip grating over a grounded dielectric slab for TM polarization Case" 한국통신학회논문지 = The journal of the Korean institute of communication science, 22(4): 605~610
1998. "Diffraction Anomalies on the Periodic Strip Grating over a Grounded Dielectric Layer in Case of Oblique Incidence and Arbitrary Polarization" 韓國電磁波學會論文誌 = The journal of Korean Institute of Electromagnetic Engineering and Science, 9(2): 238~252
1999. "Electromagnetic Scattering Resonances on a Periodic Strip Grating on a Grounded Dielectric Slab: Bragg Blazing Phenomena of TE Polarization Case" 韓國電磁波學會論文誌 = The journal of Korean Institute of Electromagnetic Engineering and Science, 10(4): 594~606
2001. "Polarization-independent Bragg blazing and Simultaneous Bragg and off-Bragg Blazing in a Periodic Strip Grating Structure over a Grounded Dielectric Slab" 韓國電磁波學會論文誌 = The journal of Korean Institute of Electromagnetic Engineering and Science, 12(2): 193~198