CCTWTs
- Velocity tapering and multiple depressed collectors are used to achieve high efficiency, low prime power, and to minimise heat rejected to the cooling system. The range consists of tubes of rugged metal/ceramic construction, designed for mobile military environments. They employ high µ shadow grid modulation suitable for modern multi-function radars.
- They produce peak powers up to 1MW, bandwidths up to 10%, and cover frequencies from 5GHz to 35GHz.
- The Coupled-Cavity TWTs are capable of peak powers from tens to hundreds of kilowatts, with up to 10% duty cycle.
- e2v's Coupled-Cavity TWTs are in service in all types of ship, airborne and ground-based mobile radar systems.
- Long-range surveillance radars Naval surveillance & tracking radars for fire control systems
- Airborne multi-mode & surveillance radars Ground-based acquisition & tracking radars for fire control systems.
CCTWTs Datasheets
Helix TWTs
We specialise in developing tailor-made products to satisfy the specific requirements of our customers. Our engineers draw upon world-class facilities and decades of technical knowledge, while using the most advanced TWT simulation tools.
Our range of helix TWT products covers both commercial and military applications:
- Satellite uplinks - our long life compact designs are suitable for both static and mobile units, in X, Ku, DBS, and Ka bands, at powers up to 500W.
- ECM - our broadband devices, incorporating Multiple Collectors, have been proven at localised temperatures of over 250 degrees C and can withstand very high levels of shock and vibration. The product range includes multi-octave bandwidth (e.g. 4.5 to 18 GHz) tubes at average power levels of 100, 200, and 300W. Packaging variants include full protection, unpackaged and special versions configured for towed decoy use.
- Radar - we have developed a unique technology that has been introduced to a Dual-Mode X-band helix TWT, providing both high PRF operation with low noise under vibration and CW, and can be used in more conventional radar tubes in C and X band.
- Laboratory units - the combination of bandwidth and long life makes our ECM tubes ideal for laboratory applications such as EMC testing.
Helix TWTs Datasheets
Inductive Output Tubes
e2v leads the world in the provision of electron devices for digital, and legacy analogue, television transmitters, with a wide range of plug-in and build-up EEV Inductive Output Tubes (EEV IOTs) and their high efficiency versions, the Energy Saving IOT (EEV ESCIOT®).
e2v's family of IOTs and ESCIOTs are also used in high power scientific power supplies.
Inductive Output Tubes Datasheets
| Type | Tube rating combined amp (kW) | Frequency range (MHz) | Primary cooling | Datasheet |
|---|---|---|---|---|
| ESCIOT5130W | 66+6.6 | 470 - 810 | 5-Stage Water | |
| IOTD3100W | 55+5.5 | 470 - 810 | Water | |
| IOTD3130W | 77+7.7 | 470 - 810 | Water |
Plug-in EEV IOT Digital
Removable Cavity EEV IOT Systems Analogue
Removable Cavity EEV IOT Systems Digital
Technical Notes - IOTs
| Type | Datasheet |
|---|---|
| Operation of Transmitters at Altitude | |
| The Mode of Operation of the EEV IOT (Inductive Output Tube) and its Use in UHF Television Transmitters |
Klystrons
e2v klystrons are in use worldwide in analogue television transmitters and will fit most transmitter types. The range consists of pulsed wideband types. Although now replaced in new transmitters by IOTs and their even higher efficiency versions, ESCIOTs, they are still used globally for spares to keep analogue services running. More recently Klystrons have been used in high power supplies for Scientific establishments, specificaly in the High Energy Physics arena.
Klystrons Datasheets
Microwave Devices
e2v is recognised and respected for pioneering new developments in microwave devices: specifically microwave radar components, microwave products and RF technology. Within the solid-state microwave and electronics operation, this respect continues as customers choose e2v''s products and engineering skills to meet ever more demanding technological challenges.
Today's solid-state microwave and electronics operation provides a wide range of microwave and electronic components and sub-systems to markets including defence radar, marine radar, civil airborne radar, communications, medical and most recently automotive.
| Product affected | Datasheet |
|---|---|
| Microwave Product Guide |