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Amplifier klystrons for radar

Up-to-date requirements to klystron amplifiers of medium, high and extra high pulse and average power relate to high parameters in terms of service life, efficiency, electromagnetic compatibility, weight-dimension characteristics, resistance to external affecting factors, as well as the need to expand their band to 500-1,000 MHz or more in the centimeter and millimeter ranges. That's why the work of increasing the size of the interaction space through the use of coupled cavities with distributed interaction and cavities using higher types of oscillation becomes more urgent.

In 1984, the company specialists proposed a new design of electrodynamic system using fully transversely coupled cavities that allows substantially improving the range of output parameters of high-power multi-beam klystrons. Using this new system, a series of pulsed multi-beam klystrons for different purpose radar was developed: "Argun", "Argus", "Alatau", "Alpha". This system has been further developed in klystrons, cavities of which are excited by two types of oscillations, that allows implementing two (or more) working frequency ranges with approximately the same values of amplification and efficiency. Multibeam double-band klystrons "Ataka" and "Aguia" developed with the use of this electrodynamic system are used in ship radar equipment.

akfr
Regime, Focusing   Band, %  Pulse power, kW  Average power, kW  Cathode voltage, kV  Efficiency, %  Gain, Db 
KIU-124   Imp., RPM
focusing system
6 20 1,4 11 25 46
KIU-141 Imp., RPM
focusing system
8 90 3 14 25 45
KIU-216 Imp., RPM
focusing system
6 45 3 13 25 45
"Actek-2"  Imp., RPM
focusing system
3 20 1 10 40 43
KU-329 CW, Solenoid 4 sm 100 50-100 36 55 36
KU-342 CW, Solenoid 150 42 50 40

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