606 



THE GENERATION OF MICROWAVE POWER 



Little unclassified information is available on performance of specific 

 amplitrons. On one tube, the QK434, it has been reported that the band- 

 width is at least 10 per cent centered at a frequency of 1300 Mc, and that 

 a maximum of 10 db gain can be obtained with 1 Mw output and 67 per cent 

 efficiency. At lower gains and higher powers, efficiencies greater than 

 70 per cent are observed. A block diagram of a typical radar system em- 

 ploying duplexing at the amplitron input is shown in Fig. 11-33. 



Amplitron 



To Display 



Unit 



Fig. 11-33 Simplified Block-Diagram of a Typical Radar System Employing 

 Duplexing at the Amplitron Input. 



