HIGH POWER TRIM TUNED MMW OSCILLATOR 94 to 95 GHz 80 Watts CW MODEL SERIES VKB2426N3 INTRODUCTION CPI Canada (CPI) has manufactured millimeter wave Extended Interaction Klystron (EIK) vacuum tubes since 1969. EIKs generate or amplify millimeter wave energy through interaction between a linear electron beam and resonant cavities similar to conventional klystrons. EIKs achieve useful performance by incorporating a slow wave biperiodic ladder circuit to extend the interaction between electron beam and cavities. This allows EIKs to operate up to 280 GHz to-date at power levels suitable for a variety of applications. SCOPE This document details the performance specifications for the VKB2426N3 Extended Interaction Oscillator (EIOs). The VKB2426N3 is a 94.0 to 95.0 GHz CW EIO manufactured to Communications & Power Industries Canada Inc. commercial workmanship practices. This EIK is compatible with CPI CW power supply model VPW2827. TYPICAL PERFORMANCE Center Frequency Mechanical Tuning Range Electronic Tuning Range Power Output Test Frequencies Temperature Coefficient Cathode Modulation Sens. Pulling Figure 94.0 to 95.0 GHz 1.0 GHz 200 MHz nom. 80.0 W min. Every 0.2 GHz -2.0 MHz/oC nom. 0.3 MHz/V nom. 100 MHz nom. TYPICAL POWER SUPPLY REQUIREMENTS Cathode Voltage VK 10.0 kV max. Cathode Current 100.0 mA max. Anode Voltage VA wrt VK 6.5 kV max. Anode Current +5.0. -1.0 mA max. Body Current 10.0 mA max. Heater Voltage 5.7 to 6.3 V range Heater Current 1.1 A max. Heater Surge Current 3.0 A nom. High Voltage Delay (after 5.0 minutes min. heater on) COOLING Coolant Type Total Flow Rate Body Flow Rate Tuner Flow Rate Inlet Water Temperature Coolant Pressure Drop deionized water 1.0 L/minute min. 0.5 L/minute min. 0.1 L/minute min. 30.0 oC max. 200 kPa max. MECHANICAL Waveguide Waveguide Flange Waveguide Pressurization Input Power Connector Lead Length Coolant Hose Connectors Number of Complete Tuning Cycles Overall Dimensions Weight RG-138/U(WR10) Mates with UG387/U N/R Flying Leads 45.0 cm min. Swagelok type for 6.35mm (1/4") tubing 1000 min. See Outline Dwg. 4.5 Kg max. Power Output vs Beam Voltage NOTES: 1. Characteristic values are based on performance tests. These values may change without notice. 2. Please consult your local CPI sales office or CPI Canada for more information. OUTLINE DRAWING for reference only For further information please contact CPI Canada, a field office or local representative they may be found on our web site at: www.cpii.com CPI Canada 45 River Drive, Georgetown, Ontario, Canada. L7G2J4 Telephone +1-905-877-0161 e-mail: [email protected]