A Ka-band power amplifier based on the traveling-wave power-dividing/combining slotted-waveguide circuit

被引:81
|
作者
Jiang, X [1 ]
Ortiz, SC
Mortazawi, A
机构
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Radiat Lab, Ann Arbor, MI 48109 USA
[2] N Carolina State Univ, Dept Elect & Comp Sci, Raleigh, NC 27695 USA
关键词
Ka-band; power combining; traveling wave; waveguide-to-microstrip transition;
D O I
10.1109/TMTT.2003.822026
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An eight-device Ka-band solid-state power amplifier has been designed and fabricated using a traveling wave power-dividing/combining technique. The low-profile slotted-waveguide structure employed in this design provides not only a high power-combining efficiency over a wide bandwidth, but also efficient heat sinking for the active devices. The measured maximum small-signal gain of the eight-device power amplifier is 19.4 dB at 34 GHz with a 3-dB bandwidth of 3.2 GHz (f(L) = 31.8 GHz, f(H) = 35 GHz). The measured maximum output power at 1-dB compression (P-out at 1 dB) from the power amplifier is 33 dBm (similar to2 W) at 32.2 GHz, with a power-combining efficiency of 80%. Furthermore, performance degradation of this power amplifier due to device failures has also been simulated and measured.
引用
收藏
页码:633 / 639
页数:7
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