SIZE REDUCTION OF KLOPFENSTEIN-BALUN TRANSFORMER FOR BALANCED ANTENNAS
Article Sidebar
Published:
Feb 28, 2021
Keywords:
Unbalanced line BALUN balanced line coplanar stripline % bandwidth and tapered microstrip line
Main Article Content
Abstract
A BALUN transformer converts impedance into another one and also converts an unbalanced line into a balanced line. A compact size broadband BALUN transformer is designed using Klopfenstein taper line transformer approach to transform 50Ω impedance into 100 Ω. The results of the conventional BALUN are compared with the proposed compact size BALUN. In order to reduce the length of the BALUN, a curved microstrip line is used. The proposed compact size BALUN is 56 %- 70 % smaller in size w.r.t the conventional BALUN but at the cost of 6% - 11% reduction in the overall band. The conventional BALUN has measured % bandwidth of 165 while the reduced size BALUN has 159. The measured results are in agreement with the simulated results.
Downloads
Download data is not yet available.
Article Details
How to Cite
P. Shastri, S., R. Singh, R., & Y. Pawar, S. (2021). SIZE REDUCTION OF KLOPFENSTEIN-BALUN TRANSFORMER FOR BALANCED ANTENNAS. Malaysian Journal of Science, 40(1), 55–66. https://doi.org/10.22452/mjs.vol40no1.5
Section
Original Articles
Transfer of Copyrights
- In the event of publication of the manuscript entitled [INSERT MANUSCRIPT TITLE AND REF NO.] in the Malaysian Journal of Science, I hereby transfer copyrights of the manuscript title, abstract and contents to the Malaysian Journal of Science and the Faculty of Science, University of Malaya (as the publisher) for the full legal term of copyright and any renewals thereof throughout the world in any format, and any media for communication.
Conditions of Publication
- I hereby state that this manuscript to be published is an original work, unpublished in any form prior and I have obtained the necessary permission for the reproduction (or am the owner) of any images, illustrations, tables, charts, figures, maps, photographs and other visual materials of whom the copyrights is owned by a third party.
- This manuscript contains no statements that are contradictory to the relevant local and international laws or that infringes on the rights of others.
- I agree to indemnify the Malaysian Journal of Science and the Faculty of Science, University of Malaya (as the publisher) in the event of any claims that arise in regards to the above conditions and assume full liability on the published manuscript.
Reviewer’s Responsibilities
- Reviewers must treat the manuscripts received for reviewing process as confidential. It must not be shown or discussed with others without the authorization from the editor of MJS.
- Reviewers assigned must not have conflicts of interest with respect to the original work, the authors of the article or the research funding.
- Reviewers should judge or evaluate the manuscripts objective as possible. The feedback from the reviewers should be express clearly with supporting arguments.
- If the assigned reviewer considers themselves not able to complete the review of the manuscript, they must communicate with the editor, so that the manuscript could be sent to another suitable reviewer.
Copyright: Rights of the Author(s)
- Effective 2007, it will become the policy of the Malaysian Journal of Science (published by the Faculty of Science, University of Malaya) to obtain copyrights of all manuscripts published. This is to facilitate:
(a) Protection against copyright infringement of the manuscript through copyright breaches or piracy.
(b) Timely handling of reproduction requests from authorized third parties that are addressed directly to the Faculty of Science, University of Malaya. - As the author, you may publish the fore-mentioned manuscript, whole or any part thereof, provided acknowledgement regarding copyright notice and reference to first publication in the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers) are given.
You may produce copies of your manuscript, whole or any part thereof, for teaching purposes or to be provided, on individual basis, to fellow researchers. - You may include the fore-mentioned manuscript, whole or any part thereof, electronically on a secure network at your affiliated institution, provided acknowledgement regarding copyright notice and reference to first publication in the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers) are given.
- You may include the fore-mentioned manuscript, whole or any part thereof, on the World Wide Web, provided acknowledgement regarding copyright notice and reference to first publication in the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers) are given.
- In the event that your manuscript, whole or any part thereof, has been requested to be reproduced, for any purpose or in any form approved by the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers), you will be informed. It is requested that any changes to your contact details (especially e-mail addresses) are made known.
Copyright: Role and responsibility of the Author(s)
- In the event of the manuscript to be published in the Malaysian Journal of Science contains materials copyrighted to others prior, it is the responsibility of current author(s) to obtain written permission from the copyright owner or owners.
- This written permission should be submitted with the proof-copy of the manuscript to be published in the Malaysian Journal of Science
References
Anagnostou, D. E., Morton, M., Papapolymerou, J., & Christodoulou C. G. (2008). A 0–55GHz coplanar waveguide to coplanar strip transition. IEEE Transactions on Microwave Theory and Techniques, 56, 1–6.
Bah, A. O. (2016, September). An extremely wideband tapered balun for application in tightly coupled arrays. In 6th IEEE-APS Topical
Conference on Antennas and Propagation in Wireless Communications (pp. 162–165). IEEE>
Hong Y.-P. (2013). Fat dipole antenna with broadband balun using CPW-to-slotline field transformation. Electronics Letters, 49, 635–636.
Klopfenstein, R. W. (1956, January). A transmission line of improved design. In Proceedings of the I.R.E. (pp. 31–35).
Lee, H. G., Mohyuddin, W., Choi C. H., & Kim K. W. (2018). Asymmetric ultra-wideband microstrip-to-coplanar stripline transition. IEEE Microwave and Wireless Components Letters, 28(5).
Lin, S., Wang, J., Deng, Y., & Zhang, G. (2015). A new compact ultra-wideband balun for printed balanced antennas. Journal of Electromagnetic Waves and Applications, 29, 1570–1579.
Lin, S.-C. (2010). Wideband series-fed dipole antenna with balun integrated. Journal of Electromagnetic Waves and Applications, 24, 2463–2477.
Maksimovitch, Y., Mikhnev, V., & Vainikainen, P. (2007, September). Step-by-Step modification of Printed Wideband Balun for GPR Antennas. In17th International Conference on Microwave and Telecommunication Technology (pp. 427–428). IEEE.
Meng, X., Wu, B., Huang, Z., & Wu, X. (2016). Compact 30:1 bandwidth ratio Balun for printed balanced antennas. Progress in Electromagnetics Research C, 64, 125–132.
Pozar, D. M. (1998). Microwave engineering. John Wiley & Sons.
Resley, L., & Song, H. (2012). Ka-band Klopfenstein tapered impedance transformer for radar applications. Progress in Electromagnetics Research, 27, 253–263.
Ruvio, G., & Ammann, M. J. (2008, July). Effects of Klopfenstein tapered feedlines on the frequency and time domain performance of planar monopole UWB antennas. In IEEE Antennas and Propagation Society, International Symposium (pp. 1–4). IEEE.
Shao, J., Zhou, R., Chen, C., Wang, X., Kim, H., & Zhang, H. (2013). Design of a wideband Balun using parallel strips. IEEE Microwave and Wireless Components Letters, 23, 125–127.
Tu, W.-H., & Chang, K. (2006). Wide-band microstrip-to-coplanar stripline/slotline transitions. IEEE Transactions on Microwave Theory and Techniques, 54, 1084–1089.
Vega, F., Mora, N., & Rachidi, F. (2011, September). Design and simulation of a coaxial exponential transmission line for a half impulse radiating antenna. In 2011 XXXth URSI General Assembly and Scientific Symposium (pp. 1–4). IEEE.
Zhu, F., Hong, W., Chen, J., & Wu, K. (2012). Ultra-wideband single and dual Baluns based on substrate integrated coaxial line technology. IEEE Transactions on Microwave Theory and Techniques, 60, 3062–307.
Bah, A. O. (2016, September). An extremely wideband tapered balun for application in tightly coupled arrays. In 6th IEEE-APS Topical
Conference on Antennas and Propagation in Wireless Communications (pp. 162–165). IEEE>
Hong Y.-P. (2013). Fat dipole antenna with broadband balun using CPW-to-slotline field transformation. Electronics Letters, 49, 635–636.
Klopfenstein, R. W. (1956, January). A transmission line of improved design. In Proceedings of the I.R.E. (pp. 31–35).
Lee, H. G., Mohyuddin, W., Choi C. H., & Kim K. W. (2018). Asymmetric ultra-wideband microstrip-to-coplanar stripline transition. IEEE Microwave and Wireless Components Letters, 28(5).
Lin, S., Wang, J., Deng, Y., & Zhang, G. (2015). A new compact ultra-wideband balun for printed balanced antennas. Journal of Electromagnetic Waves and Applications, 29, 1570–1579.
Lin, S.-C. (2010). Wideband series-fed dipole antenna with balun integrated. Journal of Electromagnetic Waves and Applications, 24, 2463–2477.
Maksimovitch, Y., Mikhnev, V., & Vainikainen, P. (2007, September). Step-by-Step modification of Printed Wideband Balun for GPR Antennas. In17th International Conference on Microwave and Telecommunication Technology (pp. 427–428). IEEE.
Meng, X., Wu, B., Huang, Z., & Wu, X. (2016). Compact 30:1 bandwidth ratio Balun for printed balanced antennas. Progress in Electromagnetics Research C, 64, 125–132.
Pozar, D. M. (1998). Microwave engineering. John Wiley & Sons.
Resley, L., & Song, H. (2012). Ka-band Klopfenstein tapered impedance transformer for radar applications. Progress in Electromagnetics Research, 27, 253–263.
Ruvio, G., & Ammann, M. J. (2008, July). Effects of Klopfenstein tapered feedlines on the frequency and time domain performance of planar monopole UWB antennas. In IEEE Antennas and Propagation Society, International Symposium (pp. 1–4). IEEE.
Shao, J., Zhou, R., Chen, C., Wang, X., Kim, H., & Zhang, H. (2013). Design of a wideband Balun using parallel strips. IEEE Microwave and Wireless Components Letters, 23, 125–127.
Tu, W.-H., & Chang, K. (2006). Wide-band microstrip-to-coplanar stripline/slotline transitions. IEEE Transactions on Microwave Theory and Techniques, 54, 1084–1089.
Vega, F., Mora, N., & Rachidi, F. (2011, September). Design and simulation of a coaxial exponential transmission line for a half impulse radiating antenna. In 2011 XXXth URSI General Assembly and Scientific Symposium (pp. 1–4). IEEE.
Zhu, F., Hong, W., Chen, J., & Wu, K. (2012). Ultra-wideband single and dual Baluns based on substrate integrated coaxial line technology. IEEE Transactions on Microwave Theory and Techniques, 60, 3062–307.