View LD7213L_1264199.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

DATA S H E E T
HIGH POWER TRAVELING WAVE TUBE FOR GROUND TERMINALS
LD7213, LD7213L
14 GHz, 300 W CW, CONDUCTION COOLING, HIGH POWER GAIN, FLAT GAIN VARIATION
GENERAL DESCRIPTION
The NEC LD7213 and LD7213L are PPM-focused traveling wave-tubes designed for use as final amplifiers in the earth-to-satellite communications transmitter. These are capable of delivering an output power of 300 W over the range of 14.0 to 14.5 GHz and 13.75 to 14.5 GHz. They provide a high power gain of 55 dB at 300 W output, and flat gain variation of 1.5 dB at any power level. LD7213 is fully compatible with TH3759K.
FEATURES
TM High Power Gain The power gain is typically 58 dB at small signal level and 55 dB at 300 W level. TM Simple Cooling System The tubes are conduction-cooled, so that the cooling systems are greatly simplified. TM PPM (Periodic Permanent Magnet) Focusing The tubes are PPM (Periodic Permanent Magnet) -focused, eliminating entirely the focusing power supplies and interlock circuits. TM Rugged Construction The tubes are designed to be rugged, therefore they are suitable for transportable systems. TM Long Life and High Stability The tubes employ advanced impregnated cathodes with a low operating temperature for long life. TM 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.
For safe use of microwave tubes, refer to NEC document "Safety instructions to all personnel handling electron tubes" (ET0048EJVUM00)
The information in this document is subject to change without notice.
Document No. ET0191EJ2V1DS00 (2nd edition) Date Published August 1998 M Printed in Japan
(c)
1996
LD7213, LD7213L
GENERAL CHARACTERISTICS
ELECTRICAL Frequency ...................................................... LD7213 : 14.0 to 14.5 GHz LD7213L : 13.75 to 14.5 GHz Cathode ......................................................... Indirectly heated, Impregnated Heater Voltage .......................................... 6.1 V Heater Current .......................................... 1.05 A MECHANICAL Dimensions ................................................... See Outline Focusing ...................................................... Periodic Permanent Magnet Electrical Connections .................................... AMP861647-8 RF Connections Input ......................................................... SMA Female Output ...................................................... Mates with UBR-120 Flange Mounting Position .......................................... Any Weight ......................................................... 5 kg approx. Cooling ......................................................... Conduction
ABSOLUTE RATINGS (Note 1, 2 and 3)
ELECTRICAL Min. Heater Voltage ............................................. Heater Surge Current ................................. Heater Current ............................................. Heater Warm-up Time ................................. Collector Voltage .......................................... Helix Voltage ............................................. Cathode Current .......................................... Helix Current ............................................. Collector Dissipation .................................... Helix Dissipation .......................................... RF Drive Power .......................................... Reflected Power .......................................... Load VSWR ................................................ MECHANICAL Ambient Temperature ................................. -40 +95 C 5.5 - - 180 3.5 8.2 - - - - - - - Max. 6.3 2.5 1.6 - 4.6 9.0 260 10 1.2 50 5 10 2:1 Unit V A A s kVdc kVdc mAdc mAdc kW W mW W
2
LD7213, LD7213L
TYPICAL OPERATION (Note 2, 3 and 5)
Frequency ...................................................... Outoput power ................................................ Heater Voltage (Note 4) .................................... Heater Current ................................................ Helix Voltage ................................................... Helix Current ................................................... Collector Voltage ............................................. Cathode Current ............................................. Power Gain at 15 W ...................................................... at 300 W ................................................... Gain Variation (at 15 W) .................................... Gain Slope (at 15 W) ....................................... AM-PM Conversion at 15 W ...................................................... at 300 W ................................................... 3rd Order Intermodulation (two equal carriers, 20 W total) ........................ -30 dBc 0.7 3 /dB /dB 58 55 dB dB LD7213 : 14.0 to 14.5 GHz LD7213L : 13.75 to 14.5 GHz 300 6.1 1.05 8.4 3 4 230 W V A kV mA kV mA
LD7213 : 1.5 dB/ 500 MHz LD7213L : 1.5 dB/ 750 MHz 0.01 dB/MHz
Note 1 : Absolute rating should not be exceeded under continuous or transient conditions. A single absolute rating may be the limitation and simultaneous operation at more than one absolute rating may not be possible. Note 2 : The tube body is at ground potential in operation. Note 3 : All voltages are referred to the cathode potential except the heater voltage. Note 4 : The optimum operating parameters are shown on a test performance sheet for each tube. Note 5 : These characteristics and operating values may be changed as a result of additional information or product improvement. NEC should be consulted before using this information for equipment design. This data sheet should not be referred to a contractual specification.
3
LD7213, LD7213L
LD7213, LD7213L OUTLINE (Unit in mm)
56 max.
75 max.
65 max.
78 max. 44.5 0.5 31.8 0.5 28.6 0.528.6 0.5 44.5 0.5 11
A
8- 5 ( 11-Counter Boring)
RF Output WG : WR75 Flange : UBR-120
29 max. A Baseplate Temperature Check Point 154 max.
A-A Section
296
63.5 0.5
76.2 0.5
46.4 0.5 HV Connector AMP P/N 861647-8
76.2 0.5
424 max.
HV Connector Pin Assignment 65 max. RF Input SMA Female Pin No 1 2 3 4 5 6 7 TUBE ELEMENT Heter-Cathode Heter Collector Helix (Ground) Temperature Temperature No Connection
8- 5
39 max. 55 max.
8 max. 55 max.
Lead Length : 1 m From TWT Body to Connector Face
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others.

▲Up To Search▲

Price & Availability of LD7213L

	To Download LD7213L Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .