LD7235

· High Power Gain
The power gain is typically 50 dB at 150 W level.
· Simple Cooling System
The tubes are conduction-cooled, so that the cooling systems are greatly simplified.
· PPM Focusing
The tubes are PPM (Periodic Permanent Magnet) -focused, eliminating entirely the focusing power supplies and interlock circuits.
· Rugged Construction
The tubes are designed to be rugged, therefore they are suitable for transportable systems.
· Long Life and High Stability
The tubes employ an advanced impregnated cathode with a low operating temperature for long life.
· Microdischarge Free
The tubes are carefully designed to be free from microdischarge in the electron gun for long term operation,therefore they are suitable for digital communication service.

The NEC LD7235 series of PPM-focused traveling wave tubes are designed for use as final amplifiers in the earth-to-satellite communications transmitter, LMDS (Local Multipoint Distribution Service) and other advanced communication systems.

Three models of the LD7235 series are capable of delivering an output power of 150 W over the range of 26.5 GHz to 31.1 GHz and provide a high power gain of 50 dB at 150 W output power. These are equipped with dual-stage depressed collector for enhancing overall efficiency and a single collector.

Furthermore, they are of rugged and reliable design offering long-life service.