L5990
MINI TRAVELING WAVE TUBE
L-3’s L5990 is a packaged helix traveling wave tube with a power output of 130 W over the frequency range of
9.5 GHz to 10.0 GHz or 10.0 GHz to 10.5 GHz. The tube has a metal-ceramic vacuum envelope, a beam control
element, a single-stage depressed collector for high-efficiency and utilizes periodic permanent magnet focusing.
The L5990 is suitable for use in airborne and shipboard applications.
KEY FEATURES
SPECIFICATIONS
• 9.5 GHz to 10.0 GHz
PERFORMANCE
• 10.0 GHz to 10.5 GHz
Frequency
9.5 GHz to 10.0 GHz or
• 130 W min
10.0 GHz to 10.5 GHz
RF Output Power
130 W min
RF Input Power
26 dBm max
Small Signal Gain
30 dB min
• 30 dB gain min
Gain Tracking
TYPICAL PERFORMANCE
Beam On
RF Output Power (dBm)
Saturated Power vs. Frequency
Typical Upper Band
AM/PM Conversion
Harmonic Separation
54
53
-50 dBm/MHz
7 °/dB max
-8 dBc min
INTERFACE
52
DutyCW
51
50
49
48
±3.0 dB
Noise Power Density
10
10.1
10.2
10.3
10.4
10.5
Frequency (GHz)
Cathode Voltage
-4.30 kV or -4.10 kV
Cathode Current
165 mA
Helix Current-DC
1 mA
Helix Current-RF
< 10 mA
Beam Control
Electrode Voltage - off -1,200 VDC
Small Signal Gain vs. Frequency
Typical Upper Band
35
Electrode Current
Gain (dB)
34
33
32
31
1 mA max
Filament Voltage
-6.3 VDC
Filament Current
0.5 A
Collector Voltage
2.35 VDC or 2.25 VDC
Collector Current
160 mA max
Prime Power
400 W
30
29
10
10.1
10.2
10.3
10.4
10.5
Frequency (GHz)
L-3 Electron Devices
MECHANICAL
Dimensions
7.3 L in. x 1.3 H in. x 1.25 W in.
960 Industrial Road
Weight < 2.0 lb.
San Carlos, CA 94070
CoolingConduction
Baseplate Temperature
-54 ºC to +110 ºC
RF Input Connector
SMA
RF Output Connector
TNC
Tel: 650.591.8411
Fax: 650.508.1956
Email: scl.marketing@L-3com.com
www.L-3com.com/edd
All voltages are with respect to cathode.
This document consists of basic marketing information that is not defined as technical data under EAR Part 772. Data, including specifications,
contained within this document are summary in nature and subject to change at any time without notice at L-3’s discretion. Call for latest revision.
All brand names and product names referenced are trademarks, registered trademarks, or trade names of their respective holders. Rev. Mar. 2016
Electron Devices