Ultra-wideband (UWB) coaxial-waveguide power divider using end-coupling structures

Based on end open-circuited electrical coupling structure, a novel ultra-wideband (UWB) coaxial-waveguide power divider is presented in this study. The simple equivalent circuit for the presented UWB coaxial-waveguide power divider is developed and the maximum power handling capability of the presented coaxial power divider is evaluated. A UWB four-way coaxial-waveguide power divider is designed, optimised and fabricated. The simulated and measured results of the fabricated power divider show reasonable agreement. The measured input return loss is greater than 10 dB over the entire UWB band and also greater than 17 dB from 2.7 to 9 GHz. The measured average insertion loss, amplitude imbalance, group delay and group delay imbalance are about 0.4 dB (not including the 6 dB power-dividing insertion loss), ±0.45 dB, about 0.41 ns and ±0.5 ns, respectively, across the UWB band.

[1]  Quan Xue,et al.  Ultra-wideband 12-way coaxial waveguide power divider with rotated electric field mode , 2011 .

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

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

[4]  Hai-Young Lee,et al.  Multilayer Substrate Integrated Waveguide Four-Way Out-of-Phase Power Divider , 2009, IEEE Transactions on Microwave Theory and Techniques.

[5]  J.P. Becker,et al.  A planar probe double ladder waveguide power divider , 2005, IEEE Microwave and Wireless Components Letters.

[6]  Kaijun Song,et al.  Broadband radial waveguide power amplifier using a spatial power combining technique , 2009 .

[7]  D.I.L. de Villiers,et al.  Design of Conical Transmission Line Power Combiners Using Tapered Line Matching Sections , 2008, IEEE Transactions on Microwave Theory and Techniques.

[8]  M.E. Bialkowski,et al.  Design of a Compact UWB Out-of-Phase Power Divider , 2007, IEEE Microwave and Wireless Components Letters.

[9]  Yong Fan,et al.  Design of Low-Profile Millimeter-Wave Substrate Integrated Waveguide Power Divider/Combiner , 2007 .

[10]  Yong Fan,et al.  Investigation of a power divider using a coaxial probe array in a coaxial waveguide , 2007 .

[11]  Kaijun Song,et al.  Investigation of broadband power amplifier with high power-combining efficiency , 2008 .

[12]  Quan Xue,et al.  Millimeter-Wave Power Amplifier Based on Coaxial-Waveguide Power-Combining Circuits , 2010, IEEE Microwave and Wireless Components Letters.

[13]  A. Alexanian,et al.  Broadband waveguide-based spatial combiners , 1997, 1997 IEEE MTT-S International Microwave Symposium Digest.

[14]  Ke Wu,et al.  Broadband half-mode substrate integrated waveguide (HMSIW) Wilkinson power divider , 2008, IMS 2008.

[15]  Yong Fan,et al.  Radial cavity power divider based on substrate integrated waveguide technology , 2006 .

[16]  Yong Fan,et al.  Narrowband amplifier with excellent power combining efficiency , 2007 .

[17]  Kaijun Song,et al.  Broadband millimetre-wave passive spatial combiner based on coaxial waveguide , 2009 .

[18]  Yong Fan,et al.  X-band broadband substrate integrated rectangular waveguide power divider , 2008 .

[19]  Quan Xue,et al.  Ultra‐wideband out‐of‐phase power divider using multilayer microstrip‐slotline coupling structure , 2010 .

[20]  Bo Zhang,et al.  Ku-band multiway rectangular waveguide power divider , 2010 .

[21]  Robert A. York,et al.  Broad-band high-power amplifier using spatial power-combining technique , 2003, IMS 2003.

[22]  Quan Xue,et al.  Ultra-wideband coaxial-waveguide power divider with flat group delay response , 2010 .

[23]  A. Mortazawi,et al.  A Ka-band power amplifier based on the traveling-wave power-dividing/combining slotted-waveguide circuit , 2004, IEEE Transactions on Microwave Theory and Techniques.

[24]  Robert A. York,et al.  Multioctave spatial power combining in oversized coaxial waveguide , 2002 .

[25]  Quan Xue,et al.  Planar Probe Coaxial-Waveguide Power Combiner/Divider , 2009, IEEE Transactions on Microwave Theory and Techniques.

[26]  Yong Fan,et al.  Broadband Radial Waveguide Spatial Combiner , 2008, IEEE Microwave and Wireless Components Letters.

[27]  Yong Fan,et al.  Broadband travelling-wave power divider based on substrate integrated rectangular waveguide , 2009 .

[28]  T. W. Eubanks,et al.  Low-loss ultra-wideband double-sided parallel-strip line transition and power divider , 2010 .

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

[30]  Kaijun Song,et al.  Broadband multilayer in-phase power divider , 2008 .

[31]  Robert A. York,et al.  A 60-watt X-band spatially combined solid-state amplifier , 1999, IMS 1999.

[32]  Yong Fan,et al.  Eight-Way Substrate Integrated Waveguide Power Divider With Low Insertion Loss , 2008, IEEE Transactions on Microwave Theory and Techniques.

[33]  Sung-Woo Lee,et al.  A simplified design approach for radial power combiners , 2006, IEEE Transactions on Microwave Theory and Techniques.