Tektronix Encore

Amplifier Research 120T40G45
Microwave Amplifier, 40 - 45 GHz, 120W

Amplifiers - RF and Microwave >> Above 1 GHz and 101 Watt to 999 Watt >> Microwave Amplifier, 40 - 45 GHz, 120W
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Manufacturer: Amplifier Research
Model: 120T40G45

Amplifier Research 120T40G45 Microwave Amplifier, 40 - 45 GHz, 120W

Electronic Test and Measurement Equipment

Amplifier Research 120T40G45 Microwave Amplifier, 40 - 45 GHz, 120W Product Datasheet Download Product Datasheet

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Product Overview

Rent Amplifier Research 120T40G45 TWT Amplifier (Call for Availability):


The Amplifier Research 120T40G45 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 125 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, 0dBm 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. The rated power is developed by efficiently power combining the outputs from two 80 watts (nominal) microwave tubes that are factory matched in gain and phase. Housed in a stylish contemporary cabinet, the unit is designed for benchtop use but can be removed from the cabinet for rack mounting. The Amplifier Research 120T40G45 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.


Functions and Specifications of the Amplifier Research 120T40G45 TWT Amplifier Includes:



Nominal: 140 watts

Minimum: 120 watts

Linear @ 1 dB Compression: 30 watts minimum


FLATNESS: ± 5 dB maximum


FREQUENCY RESPONSE: 40 - 45 GHz instantaneously


INPUT FOR RATED OUTPUT: 1.0 milliwatt maximum


GAIN (at maximum setting): 51 dB minimum


GAIN ADJUSTMENT (continuous range): 35 dB minimum


INPUT IMPEDANCE: 50 ohms, VSWR 2.0:1 maximum


OUTPUT IMPED: 50 ohms, VSWR 2.5:1 typical


MISMATCH TOLERANCE: Output isolator used to offer excellent

mismatch tolerance up to reflected power of 120 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.



Minus 70 dBm/Hz (maximum)

Minus 75 dBm/Hz (typical)


HARMONIC DISTORTION: Minus 20 dBc typical



50/60 Hz single phase 2 kVA maximum



RF input: Type 2.4 mm female on rear panel

RF output: Type WR-22 waveguide flange on rear panel

RF output sample ports: 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

WEIGHT (approximate): 105 kg, 230 lbs

SIZE (W x H x D): 50.3 x 43 x 76 cm, 19.8 x 17 x 30 in.

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