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The Model 300T7z5G18 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 300 watts minimum at the amplifier output flange over most of the frequency range. Stated power specifications are at the fundamental frequency.
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POWER (fundamental), CW @ OUTPUT FLANGE
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FLATNESS: ±12 dB maximum, equalized for ±5 dB maximum at rated power
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FREQUENCY RESPONSE: 7.5-18 GHz instantaneously
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INPUT FOR RATED OUTPUT: 1.0 milliwatt maximum
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GAIN (at maximum setting): 55 dB minimum
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GAIN ADJUSTMENT (continuous range): 35 dB minimum
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INPUT IMPEDANCE: 50 ohms, VSWR 2.0:1 maximum
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OUTPUT IMPEDANCE: 50 ohms, VSWR 2.5:1 typical
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MISMATCH TOLERANCE: Output power fold back protection at reflected power exceeding 60 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.
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MODULATION CAPABILITY: Will faithfully reproduce AM, FM, or pulse modulation appearing on the input signal. AM peak envelope power limited to specified power.
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VIDEO PULSE CAPABILITY
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Pulse Width: 0.5 microseconds min
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Pulse Rate (PRF): 100 kHz max
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RF Rise and Fall: 30 ns max (10% to 90%)
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Delay: 300 ns max from pulse input to RF 90%
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Pulse width distortion: ±30 ns max (50% points of output pulse width compared to 50% points of input pulse width)
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NOISE POWER DENSITY
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(pulse on): Minus 65 dBm/Hz (maximum), Minus 70 dBm/Hz (typical)
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(pulse off): Minus 140 dBm/Hz (typical)
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HARMONIC DISTORTION: Minus 2 dBc max., minus 5 dBc typ.
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PRIMARY POWER: 190-260 VAC, 50/60 Hz single phase, 2 KVA maximum
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CONNECTORS
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RF input: Type N precision female on rear panel
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RF output: Type WRD –750D24 waveguide flange on rear panel
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RF output sample port: Type N precision female on rear panel
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GPIB: IEEE-488 (f) on rear panel
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Interlock: DB-15 (f) on rear panel
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Video: BNC-female on rear panel
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COOLING: Forced air (self contained fans), air entry and exit in rear.
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SIZE (W x H x D): 50.3 x 31 x 68.6 cm, 19.8 x 12 x 27 in
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WEIGHT (approximate): 52 kg, 115 lb
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