Back to Homepage
Microwave
BWO Tubes 33-170 GHz

Photo of BWO tube

  • BWO tubes for 33-170 GHz in four bands
  • Full wave guide operation
  • Smooth power/frequency dependence
  • High output power, 50 mW on 100 GHz typical
  • Supplied packaged in a magnet
  • Grid for power regulation
  • Delivery from stock

Power/Frequency dependencies for tubes we offer from stock

BWO Tubes Description

Main advantages of BWO tubes series BWO-xx are very smooth dependence of output power versus frequency and high output power. Unique technology applied for producing of BWO tubes allows to obtain oscillations within a full waveguide frequency band without deep points. We supply each BWO tube with a personal calibration for output power versus frequency and frequency versus high voltage dependencies. Operation frequency of BWO tube depends on high voltage applied on a deceleration system of the tube - anode voltage. Anode current can be controlled by means of a control electrode - the grid that allows to control the output millimeter wave power. The BWO tube allows to change frequency and power independently and very fast - few microseconds for full band frequency sweep and about 10 ns for on/off power modulation.

Specification

Model
BWO-Q (BWO6)
BWO-U
BWO-V (BWO4)
BWO-E
BWO-W (BWO3)
BWO-F
BWO-D (BWO2)
..Operating range, GHz
33-50
40-60
50-75
60-90
75-110
90-140
110-170
..Output power, min, mW
15-40
30-50
12-30
15-40
6-30
10-30
6-20
..Power difference in the range, max, dB
3-5
3-6
3-5
3-6
3-6
3-6
3-6
..Anode voltage, V
350-1200
700-1700
350-1200
700-1700
400-1500
800-2500
400-2500
..Cathode current, mA
20-25
20-25
20-25
20-25
20-25
20-25
20-25
..MTBF, h
2000
1500
2000
1500
1000
1000
1000

The typical power/frequency and frequency versus high voltage applied to deceleration system dependencies are shown on the plots below for BWO-W model.

BWO tubes from ELVA-1 - see typical power/frequency diagram BWO tubes from ELVA-1 - see typical frequency versus high voltage diagram
The dependencies of output power versus anode current are presented for 7 tubes on left plot below. The power measured on 100 GHz frequency. On the right plot the dependencies of anode current versus heating voltage are shown.
ELVA's BWO Tubes - The dependencies of output power versus anode current BWO Tubes from ELVA-1. See the dependencies of anode current versus heating voltage

BWO Tube - see typical electrical schema

U anode as mentioned in the table, U control=+50... +200 VDC, U heating=+1.0...+1.2 VDC