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LD7235 데이터시트

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LD7235 30 GHz, 150 W CW, CONDUCTION COOLING, HIGH POWER GAIN NEC
NEC => Renesas Technology NEC
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GENERAL DESCRIPTION
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.

FEATURES
○ 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.

 

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