volume | PIER Journals

2013-01-17

Ultra-Broadband High Efficiency Mode Converter

Abdelwahed Tribak,

Professor Abdelwahed Tribak

National Institute of Posts and Telecommunications (INPT)

Morocco

Homepage

Jamal Zbitou,

Dr. Jamal Zbitou

LITEN. Faculté Polydisciplinaire de Khouribga FPK

France

Homepage

Angel Mediavilla Sanchez,

Dr. Angel Mediavilla Sanchez

Dept. of Communication Engineering

University of Cantabria

Spain

Homepage

Naima Amar Touhami

Dr. Naima Amar Touhami

Faculty of Sciences

Abdelmalek Essaadi University

Morocco

Homepage

Progress In Electromagnetics Research C, Vol. 36, 145-158, 2013

doi:10.2528/PIERC12111905 | Google Scholar

Abstract

In this paper we develop a small-sized mode converter with high performance, high conversion efficiency and instantaneous bandwidth as high as 55%. This mode converter transforms energy from the TM01 first high-order mode towards the fundamental TE11 circular waveguide mode. The proposed structure increases the free spurious operating bandwidth in comparison with the existing results in literature. An X/Ku-bands experiment prototype unit was designed, ensuring practical return losses better than 28 dB and insertion losses less than 0.1 dB (conversion efficiency > 98.8%) within the entire frequency bandwidth ranging from 9.25 GHz to 16.25 GHz. The presented architecture offers useful features such as very wide bandwidth, small size, easy achievement as well as excellent performance, which makes it very suitable for High-power microwave (HPM) sources that generate the TM01 circular waveguide mode. In these cases the TE11 mode is needed since it has a convergent radiation pattern able to drive conventional antennas. Moreover, this compact concept is fully scalable to any millimeter frequency band.

Download Full Article (1228) View Full Article volume

Citation

Copy Export

Abdelwahed Tribak, Jamal Zbitou, Angel Mediavilla Sanchez, and Naima Amar Touhami, "Ultra-Broadband High Efficiency Mode Converter," Progress In Electromagnetics Research C, Vol. 36, 145-158, 2013.
doi:10.2528/PIERC12111905

References

1. Lemke, R. W., S. E. Calico, and M. C. Clark, "Investigation of a load-limited magnetically insulated transmission line oscillator (MILO)," IEEE Tans. Plasma Sci., Vol. 25, No. 2, 364-374, Apr. 1997.
doi:10.1109/27.602513 Google Scholar

2. Yang, S. W. and H. F. Li, "Optimization of novel high-power millimeter wave TM₀₁-TE₁₁ mode converters," IEEE Trans. Microwave Theory Tech., Vol. 45, No. 4, 552-554, Apr. 1997.
doi:10.1109/22.566638 Google Scholar

3. Ling, G. S. and J. J. Zhou, "Converters for the TE₁₁ mode generation from TM₀₁ vircator at 4 GHz," Chinese Phys. Lett., Vol. 18, 1285-1287, 2001. Google Scholar

4. Lee, B. M., W. S. Lee, Y. J. Yoon, and J. H. So, "X-band TM₀₁-TE₁₁ mode converter with short length for high power," Electronics Letters, Vol. 40, No. 18, Sep. 2, 2004. Google Scholar

5. Lee, W. S., K. S. Park, B. M. Lee, Y. J. Ywn. J. So, and W. Y. Song, "X-band TM₀₁-TE₁₁ mode converter," IEEE Antennas and Propagation Society International Symposium, Vol. 2, 1531-1534, 2004. Google Scholar

6. Sakrabarty, S. B., V. K. Singh, and S. B. Sharma, "TM₀₁ mode transducer using circular and rectangular waveguides," International Journal of RF and Microwave Computer-aided Engineering, Vol. 20, No. 3, May 2010. Google Scholar

7. Lee, B. M., S. H. Lee, S. Kwon, Y. J. Yoon, and J. H. So, "The design of X-band non-constant serpentine TM₀₁-TE₁₁ mode converter with short length," IEEE Antennas and Propagation Society International Symposium, 2005. Google Scholar

8. Yuan, C. W, Q. X. Liu, H. H. Zhong, and B. L. Qian, "A novel TEM-TE₁₁ mode converter," IEEE Microwave and Wireless Components Letters, Vol. 15, No. 8, Aug. 2005. Google Scholar

9. Eisenhart, R. L., "A novel wide band TM₀₁ to TE₁₁ mode converter," IEEE MTT-S Int. Microw. Symp. Dig., 249-252, 1998. Google Scholar

10. Yuan, C. W, H. H. Zhong, Q. X. Liu, and B. L. Qian, "A novel TM₀₁-TE₁₁ circularly polarized (CP) mode converter," IEEE Microwave and Wireless Components Letters, Vol. 16, No. 8, Aug. 2006.
doi:10.1109/LMWC.2006.879486 Google Scholar

11. Mediavilla, A, J. L. Cano, and K. Cepero, "On octave bandwidth properties of octagonal-shaped waveguide mode transformers," IEEE Tran. Microwave Theory Tech., Vol. 59, No. 10, 2447-2451, Oct. 2011.
doi:10.1109/TMTT.2011.2163077 Google Scholar

12. Mician μWave-Wizard "Mode matching, fast hybrid MM/boundary contour and MM/2D finite element analysis and optimization tool,". Google Scholar