N- WAY COMPACT ULTRA-WIDE BAND EQUAL AND UNEQUAL SPLIT TAPERED TRANSMISSION LINES WILKINSON POWER DIVIDER

(Received: 27-May-2020, Revised: 15-Jul.-2020 , Accepted: 3-Aug.-2020)
In this article, compact N-way Ultra Wide Band (UWB) equal and unequal split Wilkinson Power Dividers (WPDs) using exponentially λ/4 Tapered Transmission Line Transformers (TTLTs) are designed. First, 2-way WPDs are designed, simulated and then cascaded to get 4-way (equal and unequal split) and 8-way (equal split) UWB WPDs. 2- and 4-way (equal and unequal split) WPDs are fabricated and tested. The simulated and measured results of all the designed dividers are good in terms of insertion, return losses and group delay through UWB frequency band. The analysis of these dividers is carried out using the commercial ANSYS High Frequency Structure Simulator (HFSS) software package which is based on the Finite Element Method (FEM). Moreover, A MATLAB built-in function “fmincon.m” is used to find the optimum values of the three resistors chosen for perfect isolation. To validate the results, the simulation results are compared with the measured ones.

[1] V. Zhurbenko, Passive Microwave Components and Antennas, BoD–Books on Demand, 2010.

[2] R. S. Kshetrimayum, "An Introduction to UWB Communication Systems," IEEE Potentials, vol. 28, pp. 9-13, 2009.

[3] C. Nguyen and M. Miao, Design of CMOS RFIC Ultra-Wideband Impulse Transmitters and Receivers, ISBN 978-3-319-53107-6, Springer, 2017.

[4] Y. Rahayu, T. A. Rahman, R. Ngah and P. Hall, "Ultra Wideband Technology and Its Applications," Proc. of the 5th IFIP International Conference on Wireless and Optical Communications Networks (WOCN'08), pp. 1-5, 2008.

[5] D. M. Pozar, Microwave Engineering. Hoboken, NJ: John Wiley & Sons, 2012.

[6] C. T. Chiang and B.-K. Chung, "Ultra Wideband Power Divider Using Tapered Line," Progress In Electromagnetics Research, vol. 106, pp. 61-73, 2010.

[7] O. Ahmed and A.-R. Sebak, "A Modified Wilkinson Power Divider/Combiner for Ultra-wideband Communications," Proc. of IEEE Antennas and Propagation Society International Symposium, pp. 1-4, Charleston, SC, USA, 2009.

[8] H. Habibi and H. Miar Naimi, "Taper Transmission Line UWB Wilkinson Power Divider Analysis and Design," International Journal of Electronics, vol. 106, pp. 1332-1343, 2019.

[9] F. Razzak, M. Alkanhal and A.-F. Sheta, "UWB Wilkinson Power Divider Using Tapered Transmission Lines," Proceedings of Progress in Electromagnetics Research Symposium (PIERS), 2012.

[10] H. Wang, X. Tang, Y. Liu and Y. Cao, "Analysis and Design of Ultra-wideband Power Divider by Micro- genetic Algorithm," Journal of Electromagnetic Waves and Applications, vol. 26, pp. 1341-1349, 2012.

[11] B. Mishra, A. Rahman, S. Shaw, M. Mohd, S. Mondal and P. Sarkar, "Design of an Ultra-wideband Wilkinson Power Divider," Proc. of the 1st IEEE International Conference on Automation, Control, Energy and Systems (ACES), pp. 1-4, Hooghy, India, 2014.

[12] K. A. Al Shamaileh, N. I. Dib and A. Abbosh, "Analysis and Design of Ultra-wideband Unequal-split Wilkinson Power Divider Using Tapered Lines Transformers," Electromagnetics, vol. 32, pp. 426-437, 2012.

[13] D. Hawatmeh, K. Al Shamaileh, N. Dib and A. Sheta, "Design and Analysis of A 3-way Unequal Split Ultra-wideband Wilkinson Power Divider," Int. Journal of Electronics, vol. 100, pp. 1062-1071, 2013.

[14] Y. Wu and Y. Liu, "Compact 3–11 GHz UWB Planar Unequal Power Divider Using Two-section Asymmetric Coupled Transmission Lines and Non-uniform Microstrip," Electronics Letters, vol. 49, pp. 1002-1003, 2013.

[15] B. Pang and Y.-Z. Yin, "Development of Wilkinson Power Divider for UWB Application," Proc. of IEEE Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), pp. 1-3, Xuzhou, China, 2018.

[16] X. Wang, Z. Ma, T. Xie, M. Ohira, C.-P. Chen and G. Lu, "Synthesis Theory of Ultra-wideband Bandpass Transformer and Its Wilkinson Power Divider Application with Perfect in-band Reflection/Isolation," IEEE Transactions on Microwave Theory and Techniques, vol. 67, pp. 3377-3390, 2019.

[17] Y. S. Faouri, H. Sharif, L. Smadi and H. Jamleh, "Low Pass and Quad Band Pass Tunable Filter Based on Stub Resonator Technique," Jordanian Journal of Computers and Information Technology (JJCIT), vol. 5, no. 2, pp. 122-134, Aug. 2019.

[18] C. Schuster, L. Schynol, E. Polat, E. Schwab, S. Schmidt, R. Jakoby et al., "Reconfigurable Hairpin Filter with Tunable Center Frequency, Bandwidth and Transmission Zero," Proc. of IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), pp. 79-81, Bochum, Germany, 2019.

[19] U. Ahmed and A. Abbosh, "Modified Wilkinson Power Divider Using Coupled Microstrip Lines and Shunt Open-ended Stubs," Electronics Letters, vol. 51, pp. 838-839, 2015. 

[20] S. W. Wong and L. Zhu, "Ultra-wideband Power Divider with Good in-band Splitting and Isolation Performances," IEEE Microwave and Wireless Components Letters, vol. 18, pp. 518-520, 2008.

[21] Y. Yao and Z. Feng, "A Band-notched Ultra-wideband 1 to 4 Wilkinson Power Divider Using Symmetric Defected Ground Structure," Proc. of IEEE Antennas and Propagation Society International Symposium, pp. 1557-1560, Honolulu, HI, USA, 2007.

[22] Y. Yao, M. Liu, W. Chen and Z. Feng, "Analysis and Design of Wideband Widescan Planar Tapered Slot Antenna Array," IET Microwaves, Antennas & Propagation, vol. 4, pp. 1632-1638, 2010.

[23] S. Saleh, W. Ismail, I. S. Zainal Abidin, M. H. Jamaluddin, S. A. Al-Gailani, A. S. Alzoubi et al., "Nonuniform Compact Ultra-Wide Band Wilkinson Power Divider with Different Unequal Split Ratios," Journal of Electromagnetic Waves and Applications, vol. 34, no. 2, pp. 1-14, 2020.

[24] R. Mirzavand, M. M. Honari, A. Abdipour and G. Moradi, "Compact Microstrip Wilkinson Power Dividers with Harmonic Suppression and Arbitrary Power Division Ratios," IEEE Transactions on Microwave Theory and Techniques, vol. 61, pp. 61-68, 2012.

[25] M. M. Honari, L. Mirzavand, R. Mirzavand, A. Abdipour and P. Mousavi, "Theoretical Design of Broadband Multisection Wilkinson Power Dividers with Arbitrary Power Split Ratio," IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 6, pp. 605-612, 2016.

[26] Y.-L. Wu, H. Zhou, Y.-X. Zhang and Y.-A. Liu, "An Unequal Wilkinson Power Divider for a Frequency and Its First Harmonic," IEEE Microwave and Wireless Components Letters, vol. 18, pp. 737-739, 2008.