Traveling Wave Tubes (TWT)

297 Traveling Wave Tubes from 8 manufacturers listed on everything RF

Traveling Wave Tubes from the leading manufacturers are listed here. Narrow down on TWTs based on the type, frequency, power, cathode voltage and other specifications. View product specifications, download datasheets and request quotations on products that meet your requirement.

Description:40 kW Coupled Cavity Travelling Wave Tube from 16 to 17 GHz
Type:
Coupled Cavity
Focusing:
PPM
Band:
Ku Band (12 to 18 GHz)
Frequency:
16 to 17 GHz
Peak Output Power:
40 kW
Power Output:
Pulsed
Gain:
48 dB
Cathode Voltage:
-38 to -35 kV
Cathode Current:
6.5 A
Application:
Radar, Airborne, Satellite
more info
Description:250 W, Travelling Wave Tube from 27 to 30 GHz
Frequency:
27 to 30 GHz
Power:
250 W
Power Output:
Pulsed
Gain:
37 to 40 dB
more info
Description:70 W Helix, Miniature Travelling Wave Tube from 6 to 18 GHz
Type:
Helix
Focusing:
PPM
Frequency:
6 to 18 GHz
Power:
70 W
Power Output:
CW
Gain:
60 dB
Cathode Voltage:
-4.3 kV
Cathode Current:
160 mA
Application:
Radar, Airborne, Military, SATCOM
more info
Description:2.75 to 35 GHz, 0.5 W, Coupled Cavity Traveling Wave Tube
Type:
Coupled Cavity
Focusing:
PPM
Band:
X Band (8 to 12 GHz), Ku Band (12 to 18 GHz), Ka B...
Frequency:
2.75 to 35 GHz
Power:
0.5 W
Peak Output Power:
50 kW
Power Output:
Pulsed
Gain:
50 dB
Cathode Voltage:
-32 kV
Cathode Current:
9A
Application:
Airborne, Radar
more info
Description:12000 W Coupled Cavity Travelling Wave Tube from 16.5 to 17 GHz
Type:
Coupled Cavity
Focusing:
PPM
Band:
X Band (8 to 12 GHz), Ku Band (12 to 18 GHz), Ka B...
Frequency:
16.5 to 17 GHz
Power:
12000 W
Power Output:
CW
Gain:
45 dB
Cathode Voltage:
29.5 kV
Collector Current:
2 A
Application:
Airborne, Radar
more info
Description:2250 W Helix Travelling Wave Tube from 5.85 to 6.65 GHz
Type:
Helix
Focusing:
PPM
Band:
X Band (8 to 12 GHz), Ku Band (12 to 18 GHz), Ka B...
Frequency:
5.85 to 6.65 GHz
Power:
2250 W
Power Output:
CW
Gain:
48 dB
Cathode Voltage:
15 kV
Application:
Airborne, Radar
more info
Description:250 W Helix Travelling Wave Tube from 2 to 4 GHz
Type:
Helix
Band:
X Band (8 to 12 GHz), Ku Band (12 to 18 GHz), Ka B...
Frequency:
2 to 4 GHz
Power:
250 W
Power Output:
CW
Cathode Voltage:
-4.2 kV
Cathode Current:
0.45A
Application:
Airborne, Radar
more info
Description:750 W Helix Travelling Wave Tube from 12.75 to 14.5 GHz
Type:
Helix
Focusing:
PPM
Band:
Ku Band (12 to 18 GHz)
Frequency:
12.75 to 14.5 GHz
Power:
750 W
Power Output:
CW
Gain:
42 dB
Collector Current:
17 to 260 mA (DC)
Application:
Radar, Airborne, Satellite
more info
Description:250 W, Travelling Wave Tube from 7.5 to 18.0 GHz
Frequency:
7.5 to 18.0 GHz
Power:
250 W
Power Output:
CW/Pulsed
Gain:
35 to 55 dB
more info
Description:70 W Helix, Miniature Travelling Wave Tube from 7.5 to 16 GHz
Type:
Helix
Focusing:
PPM
Frequency:
7.5 to 16 GHz
Power:
70 W
Power Output:
CW
Gain:
40 dB
Cathode Voltage:
-5.2 kV
Cathode Current:
160 mA
Application:
Radar, Airborne, Military, SATCOM
more info

What is a Traveling Wave Tube?

A traveling-wave tube, or TWT, is a specialized vacuum tube used to amplify high-frequency signals. The signals are amplified by absorbing power from a beam of electrons as it goes through the tube. TWT are linear beam tubes and are used extensively for high-power, high-frequency amplification. They usually operate from 300 MHz to frequencies over 100 GHz (there are cases where these go as high as 650 GHz) and provide power levels from a few watts to megawatts. Traveling wave tubes are widely used as power amplifiers in radar systems, communication satellite and spacecraft transmitters, and electronic warfare systems. 

There are two main types of traveling wave tubes: Helix and Coupled Cavity.

Helix TWT: In Helix TWT, the waves interact with the electron beam while traveling down a wire helix that surrounds the beam. Though these TWTs provide wide bandwidth, their output power is limited to only a few hundred watts.

Coupled Cavity TWT: In coupled cavity TWT, the waves interact with the electron beam in a series of cavity resonators through which the beam passes. These function as narrowband power amplifiers.

Important Parameters to consider in a TWT:

  • Operating Frequency: This is the frequency range at which a TWT is fully functional or provides the best performance.
  • Output Power (W/dBm): It is the magnitude of power that the TWT will provide at the output after amplifying a signal.
  • Gain (dB): Gain is the ratio of output to input power or amplitude and is measured in Decibels (dB).
  • Cathode Voltage (V): Cathode voltage is the voltage applied across the cathode to project the electrons.
  • Cathode Current (mA/A): Cathode current is the total emission of electrons from the cathode of the tube after voltage is applied.
  • Cooling: A TWT requires sufficient cooling at the collector, electron gun, as well as body to provide the best performance. TWTs are usually designed for water, forced air, or convection cooling to maintain the temperature at a safe operating level.