Amplifier Research 70T40G45 TWT Amplifier 40 GHz – 45 GHz 70W

Description

Amplifier Research 70T40G45 is a self contained, forced air cooled, broadband traveling wave tube (TWT) microwave amplifier designed for applications where wide instantaneous bandwidth, high gain and moderate power output are required. A reliable TWT subsystem provides a conservative 70 watts minimum at the amplifier output connector. Stated power specifications are at the 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, forward and reflected RF output sample port, 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.

Housed in a stylish contemporary cabinet, the unit is designed for benchtop use but can be removed from the cabinet for rack mounting.

The Model 70T40G45 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. This sub-octave amplifier features moderate harmonic content.

 

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

85 watts

Minimum

70 watts

Linear @ 1dB Compression

17 watts minimum

FLATNESS

±5 dB maximum

FREQUENCY RESPONSE

40.0-45.0 GHz instantaneously

INPUT FOR RATED OUTPUT

1.0 milliwatt maximum

GAIN (at maximum setting)

48 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 isolator used to offer excellent mismatch tolerance up to reflected power of 70 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 75 dBm/Hz (typical)

HARMONIC DISTORTION

Minus 20 dBc typical

PRIMARY POWER

190-260 VAC

50/60 Hz single phase

1 kVA maximum

CONNECTORS

RF input

Type 2.4 mm female on rear panel

RF output

Type WR-22 waveguide flange on rear panel

RF output sample port

Type 2.4 mm female on rear panel

GPIB

IEEE-488 on rear panel

Interlock

DB-15 female on rear panel

COOLING

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

SIZE (W x H x D)

50.3 x 25.4 x 68.6 cm, 19.8 x 10 x 27 in.

WEIGHT (approximate)

41 kg, 120 lbs.

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