1 / 20

Miniaturized CRLH Dual-Band Couplers and Their Applications in Beam Pattern Diversity Systems

Miniaturized CRLH Dual-Band Couplers and Their Applications in Beam Pattern Diversity Systems.

dolan
Download Presentation

Miniaturized CRLH Dual-Band Couplers and Their Applications in Beam Pattern Diversity Systems

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. Miniaturized CRLH Dual-Band Couplers and Their Applications in Beam Pattern Diversity Systems P.-L. Chi and T. Itoh, “Miniaturized dual-band directional couplers using composite right/left-handed transmission structures and their applications in beam pattern diversity systems,” IEEE Trans. Microw. Theory Tech., vol. 57, no. 5, pp. 1207-1215, May 2009 Advisor: Prof. Ruey-Beei Wu Speaker: Ting-Yi Huang (黃定彝)

  2. Outlines • Introduction • CRLH transmission structures • Dual-band CRLH components • Application • Conclusion

  3. Introduction: CRLH Tx Lines • Composite right/left-handed (CRLH) tx lines • Bandpass response • Designable phase characteristic C. Caloz and T. Itoh, “Novel microwave devices and structures based on the transmission line approach of meta-materials,” in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2003, pp. 195–198

  4. Introduction: Couplers • Branch-line coupler • 90° hybrid • Rat-race coupler • 180° hybrid D. M. Pozar, Microwave Engineering, 2nd ed, New York: Wiley, 1998, ch. 7

  5. Introduction: Beam Forming http://en.wikipedia.org/wiki/File:Beamforming.jpg

  6. CRLH Transmission Structures Unit cell: For n cells:

  7. Dual-Band Branch Line Coupler (1/2)

  8. Dual-Band Branch Line Coupler (2/2)

  9. Dual-Band Rat-Race Coupler (1/2) P.-L. Chi, C.-J. Lee, and T. Itoh, “A compact dual-band metamaterial-based rat-race coupler for a MIMO system application,” in IEEE MTT-S Int. Microw. Symp. Dig., 2008

  10. Dual-Band Rat-Race Coupler (2/2) P.-L. Chi, C.-J. Lee, and T. Itoh, “A compact dual-band metamaterial-based rat-race coupler for a MIMO system application,” in IEEE MTT-S Int. Microw. Symp. Dig., 2008

  11. Dual-Band Delay Line

  12. Dual-Band Antenna

  13. Dual-Band Beam Forming: Type I P.-L. Chi, C.-J. Lee, and T. Itoh, “A compact dual-band metamaterial-based rat-race coupler for a MIMO system application,” in IEEE MTT-S Int. Microw. Symp. Dig., 2008

  14. Beam Forming Type I: Result P.-L. Chi, C.-J. Lee, and T. Itoh, “A compact dual-band metamaterial-based rat-race coupler for a MIMO system application,” in IEEE MTT-S Int. Microw. Symp. Dig., 2008

  15. Dual-Band Beam Forming: Type II f1 f2 P.-L. Chi and T. Itoh, “Metamaterial-based components for a compact dual-band beam pattern diversity system,” in Proc. 38th Eur. Microw. Conf., Oct. 2008, pp. 555–558.

  16. Beam Forming Type II: Result P.-L. Chi and T. Itoh, “Metamaterial-based components for a compact dual-band beam pattern diversity system,” in Proc. 38th Eur. Microw. Conf., Oct. 2008, pp. 555–558.

  17. Dual-Band Beam Forming: Type III f1 f2

  18. Dual-Band Beam Forming: Type III

  19. Conclusions • Miniaturized CRLH dual-band components • 90° hybrid, 180° hybrid, and delay line • Miniaturization by investigating all possible phase variation • Dual-band beam forming • Three possible beam forming system • Different beam forming behavior at both bands

  20. Thanks for your attention.

More Related