A 1 KW peak, high duty Ku-band TWT

A traveling wave tube has been developed to deliver 1 kW peak power at 10% duty cycle over the 8-16 GHz frequency band. The tube has a micro-perveance 1 electron gun with a high mu control grid and is PPM focused with samarium cobalt magnets. Many of the techniques which have proven successful in high power CW TWT´s are incorporated in this design. These include vertebrae construction, body cooling fins, and domed output antenna. Electronic efficiency in excess of 11% has been achieved over most of the band. Midband electronic efficiency of 16.5% has been observed. Single stage depressed collector operation increases overall efficiency to over 20%.