A New Compact Finline OMT Based on Multi-Section Transformer

Authors

  • Yaqing Yu National Key Laboratory of Antennas and Microwave Technology Xidian University, Xi’an, 710071, China
  • Wen Jiang National Key Laboratory of Antennas and Microwave Technology Xidian University, Xi’an, 710071, China
  • Shuai Zhang National Key Laboratory of Antennas and Microwave Technology Xidian University, Xi’an, 710071, China
  • Shuxi Gong National Key Laboratory of Antennas and Microwave Technology Xidian University, Xi’an, 710071, China
  • Tong Cheng National Key Laboratory of Antennas and Microwave Technology Xidian University, Xi’an, 710071, China

Keywords:

Compact, finline OMT, millimeter wave application, multi-section transformer

Abstract

In the millimeter wave band, the simplification of the orthomode transducer (OMT)’s structure and processing technic is placed in a more important position. The finline OMT can meet the requirement, but its size is usually not compact enough. To solve this problem, a compact finline OMT based on multi-section transformer is presented. Such OMT can enable size reduction by reasonably designing three transformers to reach the matching condition, which makes the design more flexible. As a result, the -20dB reflection bandwidth of the proposed OMT is 30.2 GHz to 49.8 GHz (49%), while the lengths of main arm’s and side arm’s transition for vertical polarization are 1.35lambdamax and 0.9lambdamax (lamdamax denotes the maximum free space wavelength in band), respectively, which has been greatly reduced compared with the traditional ones. To verify the working performance of the design, a prototype is fabricated and measured. Finally, some assembly errors are analyzed to study its influence. The results show that the proposed OMT can be a good candidate for millimeter wave application.

Downloads

Download data is not yet available.

References

R. W. Jackson, “A planar orthomode transducer,” IEEE Microwave and Wireless Components Letters, vol. 11, (12), pp. 483-485, Dec. 2001.

P. K. Grimes, O. G. King, G. Yassin, and M. E. Jones, “Compact broadband planar orthomode transducer,” Electronics Letters, vol. 43, (21), pp. 1146-1147, Oct. 2007.

J. Uher, J. Bomemann, and U. Rosenherg, Waveguide Components for Antenna Feed Systems: Theory and CAD. Artech House, 1993.

T. J. Reck and G. Chattopadhyay, “A 600 GHz asymmetrical orthogonal mode transducer,” IEEE Microwave and Wireless Components Letters, vol. 23, (11), pp. 569-571, Sep. 2013.

M. A. Abdelaal, S. I. Shams, and A. A. Kishk, “Asymmetric compact OMT for X-band SAR applications,” IEEE Transactions on Microwave and Techniques, vol. 66, (4), pp. 1856-1863, Apr. 2018.

D. Dousset, S. Claude, and K. Wu, “A compact high-performance orthomode transducer for the Atacama large millimeter array (ALMA) band 1 (31-45GHz),” IEEE Access, 1, pp. 480-487, 2013.

G. Virone, O. A. Peverini, M. Lumia, G. Addamo, and R. Tascone, “Platelet orthomode transducer for Q-band correlation polarimeter clusters,” IEEE Transactions on Microwave Theory and Techniques, vol. 62, (7), pp. 1487-1494, June 2014.

J. Y. Han, S. Yoon, T. K. Lee, J. W. Lee, S. Song, and K. Oh, “Turnstile junction ortho-mode transducer for W-band radar seeker,” 2016 URSI AsiaPacific Radio Science Conference (URSI AP-RASC), Seoul, South Korea, pp. 1796-1797, Oct. 2016.

J. A. Ruiz-Cruz, J. R. Montejo-Garai, C. A. LealSevillano, and J. M. Rebollar, “Orthomode transducers with folded double-symmetry junctions for broadband and compact antenna feeds,” IEEE Transactions on Antennas and Propagation, vol. 66, (3), pp. 1160-1168, Jan. 2018.

C. A. Leal-Sevillano, T. J. Reck, G. Chattopadhyay, J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar, “Development of a wideband compact orthomode transducer for the 180–270 GHz band,” IEEE Transactions on Terahertz Science and Technology, vol. 4, (5), pp. 634-636, July 2014.

J. A. Ruiz-Cruz, J. R. Montejo-Garai, C. A. LealSevillano, and J. M. Rebollar, “Development of folded dual-polarization dividers for broadband ortho-mode transducers,” 2015 Asia-Pacific Microwave Conference (APMC), vol. 2, Nanjing, China, pp. 1-3, Feb. 2016.

S. D. Robertson, “Recent advances in finline circuits,” IRE Transactions on Microwave Theory and Techniques, 4, (4), pp. 263-267, 1956.

C. E. Groppi, C. Y. Drouet d’Aubigny, A. W. Lichtenberger, and C. M. Lyons, “Broadband finline ortho-mode transducer for the 750-1150 GHz band,” 16th International Symposium on Space Terahertz Technology, Goteborg, Sweden, pp. 513- 518, 2005.

S. J. Skinner and G. L. James, “Wide-band orthomode transducers,” IEEE Transactions on Microwave and Techniques, 39, (2), pp. 294-300, Feb. 1991.

G. Chattopadhyay and J. E. Carlstrom, “Finline ortho-mode transducer for millimeter waves,” IEEE Microwave and Guided Wave Letters, 9, (9), pp. 339-341, 1999.

J. Takeuchi, A. Hirata, H. Takahashi, and N. Kukutsu, “10-Gbit/s bi-directional and 20-Gbit/s uni-directional data transmission over a 120-GHzband wireless link using a finline ortho-mode transducer,” Microwave Conference Proceedings (APMC), Yokohama, Japan, pp. 195-198, 2010.

G. Moorey, R. Bolton, A. Dunning, R. Gough, H. Kanoniuk, and L. Reilly, “A 77-117 GHz cryogenically cooled receiver for radio astronomy,” Proc. of the Workshop on the Applications of Radio Science, 2006.

M. A. Abdelaal, S. I. Shams, M. A. Moharram, M. Elsaadany, and A. A. Kishk, “Compact full band OMT based on dual-mode double-ridge waveguide,” IEEE Transactions on Microwave and Techniques, pp. 1-8, Apr. 2018

E. Menargues, S. Capdevila, T. Debogovic, A. Dimitriadis, J. R. Mosig, A. Skrivervik, and E. de Rijk, “Compact orthomode transducer with broadband beamforming capability,” 2018 IEEE/ MTT-S International Microwave Symposium – IMS, Philadelphia, USA, Aug. 2018.

G. L. Huang, S. G. Zhou, and T. Yuan, “Design of a compact wideband feed cluster with dualpolarized sum- and difference-patterns implemented via 3-D metal printing,” IEEE Transactions on Industrial Electronics, vol. 65, (9), pp. 7353-7362, Sep. 2018.

A. Navarrini and Renzo Nesti, “Symmetric reverse-coupling waveguide orthomode transducer for the 3-mm band,” IEEE Transactions on Microwave Theory and Techniques, vol. 57, (1), Jan. 2009.

A. Dunning, M. Bowen, and Yoon Chung, “Offset quad ridged ortho-mode transducer with a 3.4:1 bandwidth,” 2013 Asia-Pacific Microwave Conference Proceedings (APMC), Seoul, South Korea, pp. 146-148, Jan. 2014.

A. W. Pollak and M. E. Jones, “A compact quadridge orthogonal mode transducer with wide operational bandwidth,” IEEE Antennas and Wireless Propagation Letters, vol. 17, (3), pp. 422-425, Mar. 2018.

H. Y. Jin, Y. M. Huang, H. L. Jin, and K. Wu, “Eband substrate integrated waveguide orthomode transducer integrated with dual-polarized horn antenna,” IEEE Transactions on Antennas and Propagation, vol. 66, (5), pp. 2291-2298, May 2018.

A. A. Sakr, W. M. Dyab, and K. Wu, “Theory of polarization-selective coupling and its application to design of planar orthomode transducers,” IEEE Transactions on Antennas and Propagation, vol. 66, (2), pp. 749-762, Feb. 2018.

B. J. Mohammed, K. S. Bialkowski, and A. M. Abbosh, “Compact stepped slot antenna with unidirectional radiation for animal head imaging system,” 2018 Australian Microwave Symposium (AMS), Brsibane, Australia, pp. 87-88, Apr. 2018.

M. Knizek, C. Nicholl, C. Popovich, and K. A. Shamaileh, “Quad-band multi-section multi-way power divider and its miniaturization using coupled lines,” 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, pp. 2253- 2254, Oct. 2017.

R. E. Collin, Foundations for Microwave Engineering. Cleveland, OH, 1973.

C. Ming, “Novel design method of a multi-section transmission-line transformer using genetic algorithm techniques,” 2008 International Conference on Electrical Machines and Systems, Wuhan, China, pp. 3793-3796, Feb. 2009.

W. J. R. Hoefer and M. N. Burton, “Closed form expressions for parameters of finned and ridge waveguide,” IEEE Transactions on Microwave and Techniques, vol. 30, (12), pp. 2190-2194, Dec. 1982.

Downloads

Published

2021-07-16

How to Cite

[1]
Yaqing Yu, Wen Jiang, Shuai Zhang, Shuxi Gong, and Tong Cheng, “A New Compact Finline OMT Based on Multi-Section Transformer”, ACES Journal, vol. 34, no. 01, pp. 192–200, Jul. 2021.

Issue

Section

General Submission