Amplifier Research 40T18G40 TWT Amplifier : The Amplifier Research 40T18G40 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 provides a conservative 40 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, RF output sample port, auto sleep, plus monitoring of TWT helix cur, cathode voltage, collector voltage, heater cur, 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 Amplifier Research 40T18G40 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. Functions and Specifications of the Amplifier Research 40T18G40 TWT Amplifier Includes: POWER (fundamental), CW @ OUTPUT CONNECTOR:Nominal: 70 wattsMinimum: 40 wattsLinear @ 1dB Compression: 10 watts minimum FLATNESS: ±10 dB maximum FREQUENCY RESPONSE: 18–40 GHz instantaneously INPUT FOR RATED OUTPUT: 1.0 milliwatt maximum GAIN (at maximum setting): 46 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 atreflected power exceeding 10 watts. Will operate withoutdamage or oscillation with any magni- tude and phase ofsource and load impedance. May oscillate with unshieldedopen due to coupling to in- put. Should not be tested withconnector off. MODULATION CAPABILITY: Will faithfully reproduce AM, FM, orpulse modulation appearing on the input signal. AM peakenvelope power limited to specified power. NOISE POWER DENSITY:Minus 60 dBm/Hz (maximum)Minus 65 dBm/Hz (typical)  HARMONIC DISTORTION: Minus 3 dBc typical (at 18 GHz) PRIMARY POWER: 190-265 VAC single phase, 47/63 Hz, 1.0 KVA typical COOLING: Forced air (self contained fans), air entry and exit in rear. WEIGHT: 30 kg (65 lbs) SIZE: 50.3×16.5×68.6cm(19.8×6.5x27in) EXPORT CLASSIFICATION: EAR99     

• Amplifier Research 40T18G40 - Datasheet (141 KB)