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Amplifier Research 1000T8G18B TWT Amplifier 7.5 GHz 18 GHz 1000W

Description

Amplifier Research 1000T8G18B 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 1000 watts minimum at the amplifier output connector over most of the frequency range. 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 ports, auto sleep, 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 four 300 watts (nominal) microwave tubes that are factory matched in gain and phase to offer moderate harmonic levels without added filters. Amplifier includes wheels, leveling feet and hooks for lifting.

The Model 1000T8G18B 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.

Unit is CE marked to comply with EMC European Directive 89/336/EEC for operation inside a shielded room. Refer to the Model Configuration Chart for alternative configurations and special features.

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

Specifications

POWER (fundamental), CW, @ OUTPUT CONNECTOR

Nominal

1100 watts

Minimum

7.5-17 GHz, 1000 watts minimum

17-18 GHz, 925 watts minimum

Linear @ 1dB Compression

250 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)

60 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 200 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

8 kVA 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)

56 x 160 x 82.3 cm, 22.1 x 63 x 32.4 in.

WEIGHT (approximate)

295 kg, 650 lbs.

Standards

CISPR
CISPR 11
CISPR 14 - 1
CISPR 14 - 2
CISPR 14 - 2
CISPR 16 - 1
CISPR 16 - 2
CISPR 16 - 3
CISPR 16 - 4
CISPR 22
CISPR 24
IEC
IEC/TR EN 61000 - 1 - 1
IEC/TR EN 61000 - 2 - 1
IEC/TR EN 61000 - 2 - 3
IEC EN 61000 - 3 - 2
IEC EN 61000 - 3 - 4
IEC/TC EN 61000 - 3 - 5
IEC EN 61000 - 4 - 2
IEC EN 61000 - 4 - 3
IEC EN 61000 - 4 - 4
IEC EN 61000 - 4 - 5
IEC EN 61000 - 4 - 6
IEC EN 61000 - 4 - 7
IEC EN 61000 - 4 - 8
IEC EN 61000 - 4 - 9
IEC EN 61000 - 4 - 11
European
EN 50 081 part 1
EN 50 081 part 2
EN 55 011
EN 55 013
EN 55 014
EN 55 015
EN 55 020
EN 55 022
EN 55 024
EN 50 082 part 1
EN 50 082 part 2
EN 50 093
American
FCC Part 15
MIL-STD - 461E