High-Power, High-Efficiency Ka-Band Space Traveling-Wave Tube
John H. Glenn Research Center, Cleveland, Ohio
Thursday, February 01 2007
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Improved designs of critical components contribute to increased power and efficiency.
The L-3 Communications Model 999H traveling-wave tube (TWT) has been demonstrated to generate an output power of 144 W at 60-percent overall efficiency in continuous-wave operation over the frequency band from 31.8 to 32.3 GHz. The best TWT heretofore commercially available for operation in the affected frequency band is characterized by an output power of only 35 W and an efficiency of 50 percent. Moreover, whereas prior TWTs are limited to single output power levels, it has been shown that the output power of the Model 999H can be varied from 54 to 144 W.
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