Gysel Power Divider With Arbitrary Power Ratios and Filtering Responses Using Coupling Structure

This paper presents a novel method for designing Gysel power dividers with arbitrary power-division ratios as well as filtering responses. A coupling structure is utilized to replace the quarter-wavelength microstrip line in the power divider. By altering the coupling strength, the power ratio can be arbitrarily controlled with the highest ratio of 10:1. Furthermore, the coupling structures enable the filtering function of the power divider. Two transmission zeros are created near the passband edges, resulting in high-selectivity quasi-elliptic responses. Theoretical analysis is carried out, and closed-form equations are derived based on circuit theory and transmission line theory. For demonstration, three filtering Gysel power dividers are implemented with different power-division ratios (1:1, 3:1, and 10:1). In all of these circuits, power splitting and bandpass filtering functions are observed with good performance. Comparisons of the measured and simulated results are presented to verify the theoretical predications.

[1]  Yongle Wu,et al.  An Unequal Wilkinson Power Divider for a Frequency and Its First Harmonic , 2008, IEEE Microwave and Wireless Components Letters.

[2]  Kam-Weng Tam,et al.  Compact Wilkinson power divider with simultaneous bandpass response and harmonic suppression , 2010, 2010 IEEE MTT-S International Microwave Symposium.

[3]  K.-K.M. Cheng,et al.  A Novel Power-Divider Design With Unequal Power-Dividing Ratio and Simple Layout , 2009, IEEE Transactions on Microwave Theory and Techniques.

[4]  H Oraizi,et al.  Optimum Design of Asymmetrical Multisection Two-Way Power Dividers With Arbitrary Power Division and Impedance Matching , 2011, IEEE Transactions on Microwave Theory and Techniques.

[5]  Sangwook Nam,et al.  A 4.1 unequal Wilkinson power divider , 2001, IEEE Microwave and Wireless Components Letters.

[6]  Jose-Maria Munoz-Ferreras,et al.  Microwave filtering power-distribution planar networks , 2011, 2011 IEEE MTT-S International Microwave Symposium.

[7]  Jae-Yeong Park,et al.  Fully integrated unequal Wilkinson power divider with EBG CPW , 2003, IEEE Microwave and Wireless Components Letters.

[8]  J. E. Page,et al.  Lattice Equivalent Circuits of Transmission-Line and Coupled-Line Sections , 2011, IEEE Transactions on Microwave Theory and Techniques.

[9]  Sheng Sun,et al.  A Novel Wideband Bandpass Power Divider With Harmonic-Suppressed Ring Resonator , 2013, IEEE Microwave and Wireless Components Letters.

[10]  Shunyong Hu,et al.  Novel bandpass‐response power divider with high frequency selectivity using centrally stub‐lOaded resonators , 2013 .

[11]  Lijun Zhang,et al.  Modified Gysel Power Divider for Dual-Band Applications , 2011, IEEE Microwave and Wireless Components Letters.

[12]  Yongle Wu,et al.  A Dual Band Unequal Wilkinson Power Divider Without Reactive Components , 2009, IEEE Transactions on Microwave Theory and Techniques.

[13]  Q. Chu,et al.  Compact Broadband Gysel Power Divider With Arbitrary Power-Dividing Ratio Using Microstrip/Slotline Phase Inverter , 2012, IEEE Transactions on Microwave Theory and Techniques.

[14]  Yeong-Her Wang,et al.  Coupled line power divider with compact size and bandpass response , 2009 .

[15]  Bing-Zhong Wang,et al.  Novel Design of Wilkinson Power Dividers With Arbitrary Power Division Ratios , 2011, IEEE Transactions on Industrial Electronics.

[16]  Myun-Joo Park,et al.  Coupled line Gysel power divider for dual-band operation , 2011 .

[17]  Xiu Yin Zhang,et al.  Single- and Dual-Band Power Dividers Integrated With Bandpass Filters , 2013, IEEE Transactions on Microwave Theory and Techniques.

[18]  Lei Zhu,et al.  Ultra-Wideband Power Divider With Good In-Band Splitting and Isolation Performances , 2008, IEEE Microwave and Wireless Components Letters.

[19]  Hongwen Yang,et al.  Design of Unequal Dual-Band Gysel Power Divider With Arbitrary Termination Resistance , 2011, IEEE Transactions on Microwave Theory and Techniques.

[20]  A.M. Abbosh,et al.  Design of Ultra-Wideband Three-Way Arbitrary Power Dividers , 2008, IEEE Transactions on Microwave Theory and Techniques.

[21]  A. Abdipour,et al.  Compact Microstrip Wilkinson Power Dividers With Harmonic Suppression and Arbitrary Power Division Ratios , 2013, IEEE Transactions on Microwave Theory and Techniques.

[22]  Homayoon Oraizi,et al.  Application of grooved substrates for design of unequal wilkinson power dividers , 2008 .

[23]  Yuanan Liu,et al.  A Modified Gysel Power Divider of Arbitrary Power Ratio and Real Terminated Impedances , 2011, IEEE Microwave and Wireless Components Letters.

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

[25]  Quan Xue,et al.  Novel Ultra-Wideband (UWB) Multilayer Slotline Power Divider With Bandpass Response , 2010, IEEE Microwave and Wireless Components Letters.

[26]  Quan Xue,et al.  Novel 5:1 Unequal Wilkinson Power Divider Using Offset Double-Sided Parallel-Strip Lines , 2007, IEEE Microwave and Wireless Components Letters.

[27]  Xiu Yin Zhang,et al.  Compact Equal and Unequal Dual-Frequency Power Dividers Based on Composite Right-/Left-Handed Transmission Lines , 2012, IEEE Transactions on Industrial Electronics.

[28]  Wen-Yan Yin,et al.  Collaborative Design of a New Dual-Bandpass 180$^{\circ}$ Hybrid Coupler , 2013, IEEE Transactions on Microwave Theory and Techniques.

[29]  Yong Fan,et al.  Ultra-wideband (UWB) power divider with filtering response using shorted-end coupled lines and open/short-circuit slotlines , 2013 .

[30]  Koen Mouthaan,et al.  Filter integrated Wilkinson power dividers , 2010 .

[31]  Xiu Yin Zhang,et al.  Compact Filtering Power Divider With Enhanced Second-Harmonic Suppression , 2013, IEEE Microwave and Wireless Components Letters.