Browsing by Author "J.F.Kauffman, Member"

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • No Thumbnail Available
    Two New Ka-Band Traveling Wave Power Divider/Combiner Designs
    (2001-06-25) Jiang, Xin; A. Mortazawi, Chair; J.F.Kauffman, Member; G.Lazzi, Member
    The purpose of this thesis is to develop a traveling wave power dividing/combining technique for a Ka-band 32-device high power amplifier system. Based on this technique, two main components of the power amplifier system have been designed. One component is a back-to-back connected 4-way waveguide-to-waveguide power divider/combiner and the other one is a back-to-back connected 8-way waveguide-to-microstrip power divider/combiner. Of the two components, the former has exhibited a 4 GHz (~12.5%) 0.5 dB bandwidth with 0.15 dB insertion loss at 32 GHz in simulation. The later utilizes a novel power coupling structure, which has the advantages of low profile, ease of fabrication and efficient heat sinking for the solid-state amplifiers. It was fabricated and experiments on this passive structure have demonstrated a minimum overall insertion loss of 1.8 dB at 32.5 GHz with a 3 dB bandwidth of 15%. The power amplifier composed of these two traveling-wave designs offers a potential broadband solution for solid-state amplifiers applied in high power millimeter-wave systems.