SIZE REDUCTION OF KLOPFENSTEIN-BALUN TRANSFORMER FOR BALANCED ANTENNAS
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Published:
Feb 28, 2021
Keywords:
Unbalanced line BALUN balanced line coplanar stripline % bandwidth and tapered microstrip line
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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.
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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
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Original Articles
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References
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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.