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. |