3

LD7263

DATA SHEET ET0479EJ1V0DS00

TYPICAL OPERATION (Note 2, 3, 4 and 5)

Unit

Frequency ……………………………………………

14.25

GHz

Output Power ………………………………………

780

W

Heater Voltage ( Note 4 ) …………………………

6.3

V

Heater Current ………………………………………

1.4

A

Collector Voltage-1 …………………………………

6.0

kV

Collector Current-1 …………………………………

275

mA

Collector Voltage-2 …………………………………

2.9

kV

Collector Current-2 …………………………………

132

mA

Cathode Current ……………………………………

410

mA

Helix Voltage

………………………………………

11.0

kV

Helix Current

………………………………………

3.0

mA

Power Gain

(SSG) …………………………

58

dB

(LSG) …………………………

53

dB

Gain Variation

at 75 W ………………………

1.0

dB/60MHz

Gain Slope

at 75 W ………………………

0.01

dB/MHz

AM-PM Conversion

at 75 W ………………………

1.0

deg./dB

at 750 W ………………………

5.0

deg./dB

3rd Order Intermodulation ………………………

–31

dBc

(two equal carriers, 75 W total)

Spurious

……………………………………………

–60

dBc

Noise Figure …………………………………………

28

dB

Overall Efficiency

…………………………………

37.6

%

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.