Amplifier Research 500T1G2 TWT Amplifier 1 GHz - 2.5 GHz 500W

Amplifier Research 500T1G2 TWT Microwave Amplifier
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Manual Datasheet

The Amplifier Research 500T1G2 is a self contained, forced air-cooled, broadband traveling wave tube (TWT) microwave amplifier designed for applications where instantaneous bandwidth and high gain are required. A reliable TWT provides a conservative 500 watts minimum at the amplifier output connector. 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, 0dBm input, VSWR protection, gain control, RF output sample port, 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, this unit is designed for benchtop use, but can be removed from the cabinet for rack mounting. The 500T1G2 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.


Power (fundamental), CW, @ Output Connector Nominal: 537 Watts
Minimum: 500 Watts
Linear @ 1dB Compression: 125 Watts minimum
Flatness ±8 dB maximum, equalized for
±5 dB maximum at rated power
Frequency Response 1 GHz - 2.5 GHz instantaneously
Input for rated Output 1.0 milliwatt maximum
Gain (at maximum setting) 57 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 100 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 72 dBm/Hz (maximum)
Minus 77 dBm/Hz (typical)
Harmonic Distortion Minus 3dBc maximum, Minus 4dBc typical
Cooling Forced air (self contained fans), air entry and exit in rear