VKB2426N3
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: CANMarketing@cpii.com
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