Amplifier Research 2000T8G18 TWT Amplifier 7.5 GHz – 18 GHz 2000W

Description

Amplifier Research 2000T8G18 is a self contained, forced air cooled, broadband traveling wave tube (TWT) microwave amplifier designed for applications where instantaneous bandwidth, high gain and high power output are required. Reliable TWT subsystems provide a conservative 2000 watts minimum at the amplifier output connector. Stated power specifications are at fundamental frequency.

The amplifier's front panel digital display shows forward and reflected output plus extensive system status information accessed through a series of menus via soft keys. Status indicators include power on, warm-up, standby, operate, faults, excess reflected power warning and remote.

Standard features include a built-in IEEE-488 (GPIB) interface, 0 dBm input, VSWR protection, gain control, RF output sample port, plus monitoring of TWT helix current, cathode voltage, collector voltage, heater current, heater voltage, baseplate temperature and cabinet temperature.

Modular design of the power supply and RF components allow for easy access and repair. Use of a switching mode power supply results in significant weight reduction. The rated power is developed by efficiently power combining the outputs from six 500 watts (nominal) microwave amplifiers that are factory matched in gain and phase.

The Model 2000T8G18 provides readily available RF power for a variety of applications in Test and Measurement, (including EMC RF susceptibility testing), Industrial and University Research and Development, and Service applications.

 

Features

  • Broadband
  • Forced air cooled
  • Digital display
  • AM, FM or pulse modulation
  • IEEE-488 (GPIB) interface
  • VSWR protection
  • Gain control
  • 0 dBm input
  • RF output Sample ports
  • Auto sleep
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Specifications

POWER (fundamental), CW, @ OUTPUT CONNECTOR

Nominal

2200 watts

Minimum

2000 watts

Linear @ 1dB Compression

500 watts minimum

FLATNESS

±11 dB maximum, equalized for ±5 dB maximum rated power

FREQUENCY RESPONSE

7.5-18 GHz instantaneously

INPUT FOR RATED OUTPUT

1.0 milliwatt maximum

GAIN (at maximum setting)

63 dB minimum

GAIN ADJUSTMENT (continuous range)

35 dB minimum

INPUT IMPEDANCE

50 ohms, VSWR 2.0:1 maximum

OUTPUT IMPEDANCE

50 ohms, VSWR 2.5:1 typical

MISMATCH TOLERANCE

Output power foldback protection at reflected power exceeding 400 watts. Will operate without damage or oscillation with any magnitude and phase of source and load impedance. May oscillate with unshielded open due to coupling to input. Should not be tested with connector off.

MODULATION CAPABILITY

Will faithfully reproduce AM, FM, or pulse modulation appearing on the input signal. AM peak envelope power limited to specified power.

NOISE POWER DENSITY

Minus 70 dBm/Hz (maximum)

Minus 72 dBm/Hz (typical)

HARMONIC DISTORTION

Minus 20 dBc maximum

Minus 27 dBc typical

PRIMARY POWER

190-255 VAC

three phase, delta (4 wire)

50/60 Hz

22kVA maximum

CONNECTORS

RF input

Type N female on rear panel

RF output

Type WRD 750D24 waveguide flange on rear panel

RF output sample port

Type N female on rear panel

GPIB

IEEE-488 (f) on rear panel

Interlock

DB-15 (f) on rear panel

COOLING

Forced air (self contained fans), air entry and exit in rear.

SIZE (W x H x D)

(Four Cabinets) Each 56 x 160 x 82.3 cm, 22.1 x 63 x 32.4 in.

WEIGHT (approximate)

1182 kg, 2600 lbs.

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