25 W solid state power combining amplifier in Ka-band
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Abstract:
This paper presents a new waveguide-based spatial power combining amplifier at millimeter-wave frequency. In this amplifier, a waveguide-microstrip spatial power dividing/combining network is adopted. A four-way broadband low loss symmetrical power dividing/combining is achieved at millimeter-wave frequency with an easy manufacture processing and convenience of integrating solid-state high power devices. The measured output power of this amplifier is more than 43.4 dBm in 29~31 GHz, and the corresponding power combining efficiency is more than 80%. The obtained output power is more than 25 W in 30~30.6 GHz.
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XIE Xiao-Qiang, LIU Xiao, XU Rui-Min.25 W solid state power combining amplifier in Ka-band[J]. Journal of Infrared and Millimeter Waves,2011,30(4):347~349