DATA S H E E T
HIGH POWER CW KLYSTRONAMPLIFIER
FOR GROUND TERMINALS
LD4606A
30 GHz, 380 W CW, HIGH EFFICIENCY, HIGH POWER GAIN
GENERAL DESCRIPTION
The NEC LD4606A is a five-cavity Klystron amplifier and
ideal for use in the earth-to-satellite communications trans-
mitter.
This is designed for operating at 380 W CW power lev-
els in the frequency range of 27.50 to 29.10 GHz. The in-
stantaneous bandwidth of minus one-decibel is at least
70 MHz over the entire 1.6 GHz range.
The tube is forced-air-cooled at the 380 W operation.
Furthermore, this is of rugged and reliable design of-
fering long-life service.
FEATURES
1 High Efficiency
The DC to RF conversion efficiency is typically 23 %
by incorporating a 39 % depressed collector.
2 High Power Gain
The power gain is typically 40 dB at the 380 W level,
so the driving power is less than 50 mW.
3 Simple Cooling System
The klystron is all forced air cooled with only one
blower, so that the cooling systems are greatly sim-
plified.
4 Permanent Magnet
The klystron is permanent magnet focused, eliminat-
ing entirely the requirement for focusing power sup-
plied and interlock circuits.
5 Rugged Construction
The klystron is designed to be rugged.
For safe use of microwave tubes, refer to NEC document 鈥淪afety instructions to all personnel
handling electron tubes鈥?(ET0048EJ鈭梀鈭桿M00)
The information in this document is subject to change without notice.
Document No. ET0117EJ3V1DS00 (3rd edition)
Date Published August 1998 M
Printed in Japan
漏
1989
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