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Septum Polarizer for Ka-Band H-Shaped Rotary Joint

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Abstract

We propose an H-shaped rotary joint that uses septum polarizers. We designed a new polarizer using three-dimensional electromagnetic-field analysis software. We measured the performance of two polarizers connected in series. We found that the insertion loss was less than 0.8 dB, the return loss was less than −15 dB, and the isolation was less than −17 dB in the frequency range 35–41 GHz, corresponding to a fractional bandwidth of ~15%. These results demonstrate the effectiveness of the H-shaped rotary joint.

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Acknowledgement

We would like to thank G. Kikuchi for producing the polarizers, M. Syoumura and A. Hamazono for producing the septum part and the termination, and Prof. Y. Yonekura for his invaluable comments.

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Authors and Affiliations

  1. Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan

    Masahiro Kaiden, Kimihiro Kimura & Hideo Ogawa

  2. Department of System and Control Engineering, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo, 184-8584, Japan

    Takashi Kasuga

  3. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan

    Masato Tsuboi & Yasuhiro Murata

Authors
  1. Masahiro Kaiden
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  2. Kimihiro Kimura
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  3. Hideo Ogawa
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  4. Takashi Kasuga
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  5. Masato Tsuboi
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  6. Yasuhiro Murata
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Corresponding author

Correspondence to Masahiro Kaiden.

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Kaiden, M., Kimura, K., Ogawa, H. et al. Septum Polarizer for Ka-Band H-Shaped Rotary Joint. J Infrared Milli Terahz Waves 30, 727–737 (2009). https://doi.org/10.1007/s10762-009-9491-9

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  • DOI: https://doi.org/10.1007/s10762-009-9491-9

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