1 / 19

Microwave Diffraction -W Band Lattice Scattering

Microwave Diffraction -W Band Lattice Scattering. C. P. Yuan ( 袁景濱 ) 02/17/2009. Outline. Introductions -Principle, and Motivation Plane Wave -Now and Before Diffraction -HFSS Simulation Conclusion. Motivation.

ava-norman
Download Presentation

Microwave Diffraction -W Band Lattice Scattering

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Microwave Diffraction-W Band Lattice Scattering C. P. Yuan (袁景濱) 02/17/2009

  2. Outline • Introductions -Principle, and Motivation • Plane Wave -Now and Before • Diffraction -HFSS Simulation • Conclusion

  3. Motivation • Use microwave source to do X-ray diffraction, so the lattices is observable. • It is easier to study the phenomenon in a lattice structure.

  4. Fourier Series

  5. 3D Fourier Series

  6. 3D Fourier Series(continued)

  7. Lattice Diffraction Crystal specimen

  8. Lattice Diffraction(continued)

  9. Bragg diffraction(continued)

  10. The wave is coherent and plane. The wave transits the whole lattices. Most of wave is transmissible for a lattice. Enough many lattices Enough far for the observer Hypotheses

  11. Coaxial Horn Plane Wave Source

  12. HFSS Plane Wave

  13. Transmission in Materials dielectric conductor

  14. Before Now Before and Now

  15. Structure 6 cm 18 mm q d = 2.25 mm f 0.4 mm 1.27 mm 6 mm WR10 Freq. = 94 GHz

  16. Transmission

  17. Conclusion • Use the horn structure can reduce the reflection. • The dielectric materiel is more suitable than the conductor.

  18. Reference • Charles Kittel, “Introduction to Solid State Physics” • Mark Cartwright, “Fourier Methods” • Walter Rudin, “Principles of Mathematical Analysis” • 欒丕網 陳啟昌---光子晶體 • F. Sporleder and H.-G. Unger, “Waveguide Tapers Transitions and Couplers” • HFSS Simulator - Ansoft Corporation

More Related