Design of High Power Density Amplifiers: Application to Ka Band

Recent developments in the design of high-power–high-frequency amplifiers are assessed in this paper by the analysis and measurements of a high power density amplifier operating in the Ka Band. Design procedure is presented and a technical investigation is reported. The proposed device has shown over 23% of useful frequency bandwidth. It is an ensemble of 16 monolithic solid state power amplifiers that employees mixed technologies as spatial and planar combiners. Test performed have given maximum delivered power of 47.2 dBm.

[1]  Kang Yin.  Millimeter wave power-combined amplifier using traveling-wave power divider-combiner , 2015, 2015 Asia-Pacific Microwave Conference (APMC).

[2]  Giovanni Saggio,et al.  Multiphysics design of a spatial combiner predisposed for thermo-mechanically affected operation , 2014 .

[3]  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.

[4]  F Di Paolo,et al.  The Squarax Amplifier: An Electromagnetic and Thermo-mechanical Innovation , 2014 .

[5]  Giovanni Saggio,et al.  Global Design of a Waveguide X-Band Power Amplifier , 2020 .

[6]  Giovanni Saggio,et al.  Computational Model of a Buncher Cavity for Millimetric Klystron , 2015, 2015 IEEE European Modelling Symposium (EMS).

[7]  F Di Paolo,et al.  High Efficiency Ka-Band Spatial Combiner , 2014 .

[8]  S. De Stefano,et al.  Magnetron High Power System Design , 2020 .

[9]  Robert A. York,et al.  Development of K-band spatial combiner using active array modules in an oversized rectangular waveguide , 2000, 2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017).

[10]  D. Passi,et al.  Design of a sub-millimetric electron gun with analysis of thermomechanical effects on beam dynamics , 2015 .

[11]  Bochao Zhao,et al.  A Ka-band Power Amplifler Based on Double-probe Microstrip to Waveguide Transition , 2010 .

[12]  D. Passi,et al.  A Novel Ka-band Spatial Combiner Amplifier: Global Design and Modeling , 2015 .

[14]  D. S. Deakin,et al.  A 5-watt, 37-GHz monolithic grid amplifier , 2000, 2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017).

[15]  D. Passi,et al.  Broadband TE10 to TE20 Mode Transformer for X Band , 2016 .

[16]  Carter M. Armstrong,et al.  The vitality of vacuum electronics , 2013, International Vacuum Electronics Conference.

[17]  K. J. Russell,et al.  Microwave Power Combining Techniques , 1979 .

[18]  F Di Paolo,et al.  New Six-Way Waveguide to Microstrip Transition applied in X Band Spatial Power Combiner , 2017 .

[19]  A. Peden,et al.  Design of broadband Ka band spatial power amplifiers , 2005, 2005 European Microwave Conference.

[20]  Xiang Li,et al.  A new type of ka-band waveguide-based power-combining structures , 2008, 2008 International Conference on Microwave and Millimeter Wave Technology.

[21]  D.J. Hoppe,et al.  A High-Power $Ka$-Band (31–36 GHz) Solid-State Amplifier Based on Low-Loss Corporate Waveguide Combining , 2008, IEEE Transactions on Microwave Theory and Techniques.

[22]  R. S. Symons,et al.  Tubes: still vital after all these years , 1998 .

[23]  K. Wu,et al.  Integrated microstrip and rectangular waveguide in planar form , 2001, IEEE Microwave and Wireless Components Letters.

[24]  Cheng Sun,et al.  Millimeter-Wave Power-Combining Techniques , 1983 .

[25]  Amir Mortazawi,et al.  A Ka-band power amplifier based on a low-profile slotted-waveguide power-combining/dividing circuit , 2003 .

[26]  M. Ando,et al.  Single-layer feed waveguide consisting of posts for plane TEM wave excitation in parallel plates , 1998 .

[27]  Yong Fan,et al.  Millileter-Wave Power-Combining Amplifier Using A Broadband Waveguide Combiner , 2012 .

[28]  Giancarlo Orengo,et al.  THE SQUARAX SPATIAL POWER COMBINER , 2013 .

[29]  Guangjun Wen,et al.  A Novel Four-Way Ka-Band Spatial Power Combiner Based on HMSIW , 2008, IEEE Microwave and Wireless Components Letters.

[30]  Patrick G. Courtney,et al.  120W Ka Band Power Amplifier Utilizing GaN MMICs and Coaxial Waveguide Spatial Power Combining , 2015, 2015 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS).