A Broadband Wilkinson Power Divider Based on the Segmented Structure

This paper proposes a topology of a broadband Wilkinson power divider based on the segmented structure. The segmented structure is formed by many transmission line segments in shunt with grounded capacitors and series resistor–capacitor networks. Each transmission line segment has the length of a fraction of a quarter of the wavelength (or <inline-formula> <tex-math notation="LaTeX">$\lambda $ </tex-math></inline-formula>/4) and the summed length of all segments remains <inline-formula> <tex-math notation="LaTeX">$\lambda $ </tex-math></inline-formula>/4. The segmented structure resembles a multiorder matching network and can extend the operation bandwidth through concurrent matching at multiple frequencies. Theoretically, the operation bandwidth can keep increasing with the increased number of segments. Practically, the widest achievable bandwidth is limited by the implementable component values. The theoretical background of the proposed broadband topology is explained. The guideline of designing the proposed power divider is provided. A power divider prototype with the structure of three segments is designed and fabricated. The measurement results, matching the simulations, show the state-of-the-art −20-dB operation bandwidth of 101%, if compared with all the published Wilkinson power dividers having a total length of <inline-formula> <tex-math notation="LaTeX">$\lambda $ </tex-math></inline-formula>/4.

[1]  Huei Wang,et al.  A Modified Wilkinson Power Divider With Isolation Bandwidth Improvement , 2012, IEEE Transactions on Microwave Theory and Techniques.

[2]  H. Oraizi,et al.  Design and optimization of broadband asymmetrical multisection wilkinson power divider , 2006, IEEE Transactions on Microwave Theory and Techniques.

[3]  Yansheng Xu,et al.  Design of Multiway Power Divider by Using Stepped-Impedance Transformers , 2012, IEEE Transactions on Microwave Theory and Techniques.

[4]  Pu-Hua Deng,et al.  New Wilkinson Power Dividers Based on Compact Stepped-Impedance Transmission Lines and Shunt Open Stubs , 2012 .

[5]  Boon-Kuan Chung,et al.  ULTRA WIDEBAND POWER DIVIDER USING TAPERED LINE , 2010 .

[6]  Abdolali Abdipour,et al.  Theoretical Design of Broadband Multisection Wilkinson Power Dividers With Arbitrary Power Split Ratio , 2016, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[7]  Abdullah Atalar,et al.  An Optimized Isolation Network for the Wilkinson Divider , 2014, IEEE Transactions on Microwave Theory and Techniques.

[8]  Tadashi Kawai,et al.  Wideband lumped-element Wilkinson power dividers using LC-ladder circuits , 2015, 2015 European Microwave Conference (EuMC).

[9]  Xiaolong Wang,et al.  Wilkinson Power Divider With Complex Isolation Component and Its Miniaturization , 2014, IEEE Transactions on Microwave Theory and Techniques.

[10]  Sobhan Roshani,et al.  Miniaturised unequal Wilkinson power divider using lumped component elements , 2017 .

[11]  Tiku Yu,et al.  A 1GHz compact Wilkinson power divider based on phase shifted transmission lines , 2016, 2016 Asia-Pacific Microwave Conference (APMC).

[12]  Reyhan Baktur,et al.  Dual- and Triple-Band Wilkinson Power Dividers Based on Composite Right- and Left-Handed Transmission Lines , 2011, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[13]  Iwata Sakagami,et al.  Trantanella Wilkinson power divider with additional transmission lines for simple layout , 2014 .

[14]  E. J. Wilkinson.  An N-Way Hybrid Power Divider , 1960 .

[15]  Xiaolong Wang,et al.  A Generalized Dual-Band Wilkinson Power Divider With Parallel $L, C,$ and $R$ Components , 2012, IEEE Transactions on Microwave Theory and Techniques.

[16]  Quan Xue,et al.  An Analytical Approach for a Novel Coupled-Line Dual-Band Wilkinson Power Divider , 2011, IEEE Transactions on Microwave Theory and Techniques.

[17]  Mrinal Kanti Mandal,et al.  Miniaturized Substrate Integrated Waveguide (SIW) Power Dividers , 2016, IEEE Microwave and Wireless Components Letters.

[18]  Charles J. Trantanella,et al.  A novel power divider with enhanced physical and electrical port isolation , 2010, 2010 IEEE MTT-S International Microwave Symposium.

[19]  Sangwook Nam,et al.  3-dB Power Dividers With Equal Complex Termination Impedances and Design Methods for Controlling Isolation Circuits , 2013, IEEE Transactions on Microwave Theory and Techniques.

[20]  S. Cohn.  A Class of Broadband Three-Port TEM-Mode Hybrids , 1968 .

[21]  J. I. Alonso,et al.  New technique for the design of ultra-broadband power dividers based on tapered lines , 2009, 2009 IEEE MTT-S International Microwave Symposium Digest.

[22]  Young-Chul Yoon,et al.  A modified Wilkinson divider using zero-degree phase shifting composite right/left-handed transmission line , 2010, 2010 IEEE MTT-S International Microwave Symposium.

[23]  Homayoon Oraizi,et al.  MINIATURIZATION OF WILKINSON POWER DIVIDERS BY USING DEFECTED GROUND STRUCTURES , 2008 .

[24]  Ferran Martín,et al.  Slow-wave inductively-loaded electromagnetic bandgap (EBG) coplanar waveguide (CPW) transmission lines and application to compact power dividers , 2016, 2016 46th European Microwave Conference (EuMC).

[25]  Yong-Xin Guo,et al.  Miniaturized Microstrip Wilkinson Power Divider With Harmonic Suppression , 2009, IEEE Microwave and Wireless Components Letters.